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NDQ_018484 | the concentration of a solution is the ratio of solute to solvent. | null | a. true, b. false | b | DQ_011479 | image | abc_question_images/states_of_matter_17613.png | states_of_matter_17613.png | 0.306169 |
NDQ_018484 | the concentration of a solution is the ratio of solute to solvent. | null | a. true, b. false | b | T_4894 | image | textbook_images/states_of_matter_23100.png | FIGURE 1.2 | 0.294708 |
NDQ_018484 | the concentration of a solution is the ratio of solute to solvent. | null | a. true, b. false | b | DQ_011501 | image | question_images/states_of_matter_7614.png | states_of_matter_7614.png | 0.294192 |
NDQ_018484 | the concentration of a solution is the ratio of solute to solvent. | null | a. true, b. false | b | DQ_011497 | image | question_images/states_of_matter_7613.png | states_of_matter_7613.png | 0.28615 |
NDQ_018484 | the concentration of a solution is the ratio of solute to solvent. | null | a. true, b. false | b | T_3930 | image | textbook_images/types_of_matter_22527.png | FIGURE 3.13 These three mixtures differ in the size of their particles. Which mixture has the largest particles? Which has the smallest particles? | 0.277749 |
NDQ_018484 | the concentration of a solution is the ratio of solute to solvent. | null | a. true, b. false | b | T_3519 | image | textbook_images/acids_and_bases_22216.png | FIGURE 10.6 Blue litmus paper turns red when placed in an acidic solution. | 0.275768 |
NDQ_018484 | the concentration of a solution is the ratio of solute to solvent. | null | a. true, b. false | b | DQ_011523 | image | question_images/states_of_matter_9252.png | states_of_matter_9252.png | 0.273209 |
NDQ_018484 | the concentration of a solution is the ratio of solute to solvent. | null | a. true, b. false | b | T_4745 | image | textbook_images/properties_of_acids_23035.png | FIGURE 1.2 | 0.272433 |
NDQ_018484 | the concentration of a solution is the ratio of solute to solvent. | null | a. true, b. false | b | DQ_001679 | image | question_images/earth_parts_651.png | earth_parts_651.png | 0.271599 |
NDQ_018484 | the concentration of a solution is the ratio of solute to solvent. | null | a. true, b. false | b | T_3938 | image | textbook_images/solids_liquids_gases_and_plasmas_22537.png | FIGURE 4.4 Each bottle contains the same volume of oil. How would you describe the shape of the oil in each bottle? | 0.270428 |
NDQ_018484 | the concentration of a solution is the ratio of solute to solvent. | null | a. true, b. false | b | T_4715 | text | null | Compare and contrast the basic properties of matter, such as mass and volume. | 0.734421 |
NDQ_018484 | the concentration of a solution is the ratio of solute to solvent. | null | a. true, b. false | b | T_2237 | text | null | All known matter can be divided into a little more than 100 different substances called elements. | 0.712792 |
NDQ_018484 | the concentration of a solution is the ratio of solute to solvent. | null | a. true, b. false | b | T_4239 | text | null | How fast a chemical reaction occurs is called the reaction rate. Several factors affect the rate of a given chemical reaction. They include the: temperature of reactants. concentration of reactants. surface area of reactants. presence of a catalyst. | 0.705419 |
NDQ_018484 | the concentration of a solution is the ratio of solute to solvent. | null | a. true, b. false | b | T_1447 | text | null | Minerals are divided into groups based on chemical composition. Most minerals fit into one of eight mineral groups. | 0.702417 |
NDQ_018484 | the concentration of a solution is the ratio of solute to solvent. | null | a. true, b. false | b | T_3960 | text | null | Solids that change to gases generally first pass through the liquid state. However, sometimes solids change directly to gases and skip the liquid state. The reverse can also occur. Sometimes gases change directly to solids. | 0.700561 |
NDQ_018484 | the concentration of a solution is the ratio of solute to solvent. | null | a. true, b. false | b | T_4893 | text | null | A given kind of matter has the same chemical makeup and the same chemical properties regardless of its state. Thats because state of matter is a physical property. As a result, when matter changes state, it doesnt become a different kind of substance. For example, water is still water whether it exists as ice, liquid water, or water vapor. | 0.700205 |
NDQ_018484 | the concentration of a solution is the ratio of solute to solvent. | null | a. true, b. false | b | T_4276 | text | null | Why must chemical equations be balanced? Its the law! Matter cannot be created or destroyed in chemical reactions. This is the law of conservation of mass. In every chemical reaction, the same mass of matter must end up in the products as started in the reactants. Balanced chemical equations show that mass is conserved in chemical reactions. | 0.693516 |
NDQ_018484 | the concentration of a solution is the ratio of solute to solvent. | null | a. true, b. false | b | T_0638 | text | null | To understand minerals, we must first understand matter. Matter is the substance that physical objects are made of. | 0.689476 |
NDQ_018484 | the concentration of a solution is the ratio of solute to solvent. | null | a. true, b. false | b | T_1674 | text | null | Remember that H2 O is a polar molecule, so it can dissolve many substances (Figure 1.1). Salts, sugars, acids, bases, and organic molecules can all dissolve in water. | 0.685809 |
NDQ_018484 | the concentration of a solution is the ratio of solute to solvent. | null | a. true, b. false | b | T_3918 | text | null | Some properties of matter can be measured or observed only when matter undergoes a change to become an entirely different substance. These properties are called chemical properties. They include flammability and reactivity. | 0.685726 |
NDQ_018486 | a 2000-g sugar-water solution contains 200 g of sugar. the concentration of the solution is | null | a. 1 percent., b. 9 percent., c. 10 percent., d. 12 percent. | c | T_3930 | image | textbook_images/types_of_matter_22527.png | FIGURE 3.13 These three mixtures differ in the size of their particles. Which mixture has the largest particles? Which has the smallest particles? | 0.293598 |
NDQ_018486 | a 2000-g sugar-water solution contains 200 g of sugar. the concentration of the solution is | null | a. 1 percent., b. 9 percent., c. 10 percent., d. 12 percent. | c | T_3513 | image | textbook_images/solubility_and_concentration_22212.png | FIGURE 10.2 This graph shows the amount of different solids that can dissolve in 1 L of water at 20 degrees C. | 0.286522 |
NDQ_018486 | a 2000-g sugar-water solution contains 200 g of sugar. the concentration of the solution is | null | a. 1 percent., b. 9 percent., c. 10 percent., d. 12 percent. | c | T_4810 | image | textbook_images/saturation_23062.png | FIGURE 1.1 | 0.282878 |
NDQ_018486 | a 2000-g sugar-water solution contains 200 g of sugar. the concentration of the solution is | null | a. 1 percent., b. 9 percent., c. 10 percent., d. 12 percent. | c | DQ_011608 | image | question_images/evaporation_and_sublimation_8078.png | evaporation_and_sublimation_8078.png | 0.273431 |
NDQ_018486 | a 2000-g sugar-water solution contains 200 g of sugar. the concentration of the solution is | null | a. 1 percent., b. 9 percent., c. 10 percent., d. 12 percent. | c | DQ_011479 | image | abc_question_images/states_of_matter_17613.png | states_of_matter_17613.png | 0.271141 |
NDQ_018486 | a 2000-g sugar-water solution contains 200 g of sugar. the concentration of the solution is | null | a. 1 percent., b. 9 percent., c. 10 percent., d. 12 percent. | c | T_4894 | image | textbook_images/states_of_matter_23100.png | FIGURE 1.2 | 0.270551 |
NDQ_018486 | a 2000-g sugar-water solution contains 200 g of sugar. the concentration of the solution is | null | a. 1 percent., b. 9 percent., c. 10 percent., d. 12 percent. | c | T_4790 | image | textbook_images/recognizing_chemical_reactions_23053.png | FIGURE 1.2 | 0.263088 |
NDQ_018486 | a 2000-g sugar-water solution contains 200 g of sugar. the concentration of the solution is | null | a. 1 percent., b. 9 percent., c. 10 percent., d. 12 percent. | c | T_3927 | image | textbook_images/types_of_matter_22524.png | FIGURE 3.10 Water is a compound that forms molecules. Each water molecule consists of two atoms of hydrogen (white) and one atom of oxygen (red). | 0.260622 |
NDQ_018486 | a 2000-g sugar-water solution contains 200 g of sugar. the concentration of the solution is | null | a. 1 percent., b. 9 percent., c. 10 percent., d. 12 percent. | c | DQ_011501 | image | question_images/states_of_matter_7614.png | states_of_matter_7614.png | 0.25981 |
NDQ_018486 | a 2000-g sugar-water solution contains 200 g of sugar. the concentration of the solution is | null | a. 1 percent., b. 9 percent., c. 10 percent., d. 12 percent. | c | DD_0239 | image | teaching_images/state_change_7606.png | The diagram below shows how matter changes state. A material will change from one state or phase to another at specific combinations of temperature and surrounding pressure. Typically, the pressure is atmospheric pressure, so temperature is the determining factor to the change in state in those cases. The states of matter shown are ice (solid), water (liquid) and water vapor (gas). When heat is applied to a material, its change in state typically goes from solid to liquid to gas. There are some exceptions where the material will go directly from a solid to a gas. When a material is cooled, its change in state typically goes from gas to liquid to solid. There are some exceptions where the material will go directly from a gas to a solid. | 0.258928 |
NDQ_018486 | a 2000-g sugar-water solution contains 200 g of sugar. the concentration of the solution is | null | a. 1 percent., b. 9 percent., c. 10 percent., d. 12 percent. | c | T_1674 | text | null | Remember that H2 O is a polar molecule, so it can dissolve many substances (Figure 1.1). Salts, sugars, acids, bases, and organic molecules can all dissolve in water. | 0.599528 |
NDQ_018486 | a 2000-g sugar-water solution contains 200 g of sugar. the concentration of the solution is | null | a. 1 percent., b. 9 percent., c. 10 percent., d. 12 percent. | c | T_4893 | text | null | A given kind of matter has the same chemical makeup and the same chemical properties regardless of its state. Thats because state of matter is a physical property. As a result, when matter changes state, it doesnt become a different kind of substance. For example, water is still water whether it exists as ice, liquid water, or water vapor. | 0.573316 |
NDQ_018486 | a 2000-g sugar-water solution contains 200 g of sugar. the concentration of the solution is | null | a. 1 percent., b. 9 percent., c. 10 percent., d. 12 percent. | c | T_4018 | text | null | Water (H2 O) is an example of a chemical compound. Water molecules always consist of two atoms of hydrogen and one atom of oxygen. Like water, all other chemical compounds consist of a fixed ratio of elements. It doesnt matter how much or how little of a compound there is. It always has the same composition. | 0.572192 |
NDQ_018486 | a 2000-g sugar-water solution contains 200 g of sugar. the concentration of the solution is | null | a. 1 percent., b. 9 percent., c. 10 percent., d. 12 percent. | c | T_4239 | text | null | How fast a chemical reaction occurs is called the reaction rate. Several factors affect the rate of a given chemical reaction. They include the: temperature of reactants. concentration of reactants. surface area of reactants. presence of a catalyst. | 0.570391 |
NDQ_018486 | a 2000-g sugar-water solution contains 200 g of sugar. the concentration of the solution is | null | a. 1 percent., b. 9 percent., c. 10 percent., d. 12 percent. | c | T_3960 | text | null | Solids that change to gases generally first pass through the liquid state. However, sometimes solids change directly to gases and skip the liquid state. The reverse can also occur. Sometimes gases change directly to solids. | 0.560304 |
NDQ_018486 | a 2000-g sugar-water solution contains 200 g of sugar. the concentration of the solution is | null | a. 1 percent., b. 9 percent., c. 10 percent., d. 12 percent. | c | T_3521 | text | null | A base is an ionic compound that produces negative hydroxide ions (OH ) when dissolved in water. For example, when the compound sodium hydroxide (NaOH) dissolves in water, it produces hydroxide ions and positive sodium ions (Na+ ). This can be represented by the equation: NaOH H2 O ! OH + Na+ | 0.551838 |
NDQ_018486 | a 2000-g sugar-water solution contains 200 g of sugar. the concentration of the solution is | null | a. 1 percent., b. 9 percent., c. 10 percent., d. 12 percent. | c | T_0960 | text | null | Through photosynthesis, the inorganic carbon in carbon dioxide plus water and energy from sunlight is transformed into organic carbon (food) with oxygen given off as a waste product. The chemical equation for photosynthesis is: | 0.545982 |
NDQ_018486 | a 2000-g sugar-water solution contains 200 g of sugar. the concentration of the solution is | null | a. 1 percent., b. 9 percent., c. 10 percent., d. 12 percent. | c | T_4276 | text | null | Why must chemical equations be balanced? Its the law! Matter cannot be created or destroyed in chemical reactions. This is the law of conservation of mass. In every chemical reaction, the same mass of matter must end up in the products as started in the reactants. Balanced chemical equations show that mass is conserved in chemical reactions. | 0.540118 |
NDQ_018486 | a 2000-g sugar-water solution contains 200 g of sugar. the concentration of the solution is | null | a. 1 percent., b. 9 percent., c. 10 percent., d. 12 percent. | c | T_0252 | text | null | Humidity usually refers to relative humidity. This is the percent of water vapor in the air relative to the total amount the air can hold. How much water vapor can the air hold? That depends on temperature. Warm air can hold more water vapor than cool air. You can see this in Figure 16.1. | 0.538893 |
NDQ_018486 | a 2000-g sugar-water solution contains 200 g of sugar. the concentration of the solution is | null | a. 1 percent., b. 9 percent., c. 10 percent., d. 12 percent. | c | T_0024 | text | null | Flowing water slows down when it reaches flatter land or flows into a body of still water. What do you think happens then? The water starts dropping the particles it was carrying. As the water slows, it drops the largest particles first. The smallest particles settle out last. | 0.537241 |
NDQ_018487 | todd made a saltwater solution containing 100 g of salt and 900 g of water. what is the concentration of the solution? | null | a. 9 percent, b. 10 percent, c. 11 percent, d. 12 percent | b | T_3930 | image | textbook_images/types_of_matter_22527.png | FIGURE 3.13 These three mixtures differ in the size of their particles. Which mixture has the largest particles? Which has the smallest particles? | 0.361561 |
NDQ_018487 | todd made a saltwater solution containing 100 g of salt and 900 g of water. what is the concentration of the solution? | null | a. 9 percent, b. 10 percent, c. 11 percent, d. 12 percent | b | DQ_011492 | image | abc_question_images/states_of_matter_19256.png | states_of_matter_19256.png | 0.30125 |
NDQ_018487 | todd made a saltwater solution containing 100 g of salt and 900 g of water. what is the concentration of the solution? | null | a. 9 percent, b. 10 percent, c. 11 percent, d. 12 percent | b | T_3513 | image | textbook_images/solubility_and_concentration_22212.png | FIGURE 10.2 This graph shows the amount of different solids that can dissolve in 1 L of water at 20 degrees C. | 0.291784 |
NDQ_018487 | todd made a saltwater solution containing 100 g of salt and 900 g of water. what is the concentration of the solution? | null | a. 9 percent, b. 10 percent, c. 11 percent, d. 12 percent | b | T_4810 | image | textbook_images/saturation_23062.png | FIGURE 1.1 | 0.288052 |
NDQ_018487 | todd made a saltwater solution containing 100 g of salt and 900 g of water. what is the concentration of the solution? | null | a. 9 percent, b. 10 percent, c. 11 percent, d. 12 percent | b | DQ_011501 | image | question_images/states_of_matter_7614.png | states_of_matter_7614.png | 0.279231 |
NDQ_018487 | todd made a saltwater solution containing 100 g of salt and 900 g of water. what is the concentration of the solution? | null | a. 9 percent, b. 10 percent, c. 11 percent, d. 12 percent | b | DQ_011479 | image | abc_question_images/states_of_matter_17613.png | states_of_matter_17613.png | 0.276966 |
NDQ_018487 | todd made a saltwater solution containing 100 g of salt and 900 g of water. what is the concentration of the solution? | null | a. 9 percent, b. 10 percent, c. 11 percent, d. 12 percent | b | T_4894 | image | textbook_images/states_of_matter_23100.png | FIGURE 1.2 | 0.276727 |
NDQ_018487 | todd made a saltwater solution containing 100 g of salt and 900 g of water. what is the concentration of the solution? | null | a. 9 percent, b. 10 percent, c. 11 percent, d. 12 percent | b | T_3927 | image | textbook_images/types_of_matter_22524.png | FIGURE 3.10 Water is a compound that forms molecules. Each water molecule consists of two atoms of hydrogen (white) and one atom of oxygen (red). | 0.273478 |
NDQ_018487 | todd made a saltwater solution containing 100 g of salt and 900 g of water. what is the concentration of the solution? | null | a. 9 percent, b. 10 percent, c. 11 percent, d. 12 percent | b | T_4868 | image | textbook_images/solute_and_solvent_23087.png | FIGURE 1.2 | 0.273256 |
NDQ_018487 | todd made a saltwater solution containing 100 g of salt and 900 g of water. what is the concentration of the solution? | null | a. 9 percent, b. 10 percent, c. 11 percent, d. 12 percent | b | T_4826 | image | textbook_images/scientific_measuring_devices_23067.png | FIGURE 1.3 | 0.272661 |
NDQ_018487 | todd made a saltwater solution containing 100 g of salt and 900 g of water. what is the concentration of the solution? | null | a. 9 percent, b. 10 percent, c. 11 percent, d. 12 percent | b | T_0164 | text | null | You know that ocean water is salty. But do you know why? How salty is it? | 0.639269 |
NDQ_018487 | todd made a saltwater solution containing 100 g of salt and 900 g of water. what is the concentration of the solution? | null | a. 9 percent, b. 10 percent, c. 11 percent, d. 12 percent | b | T_1674 | text | null | Remember that H2 O is a polar molecule, so it can dissolve many substances (Figure 1.1). Salts, sugars, acids, bases, and organic molecules can all dissolve in water. | 0.62151 |
NDQ_018487 | todd made a saltwater solution containing 100 g of salt and 900 g of water. what is the concentration of the solution? | null | a. 9 percent, b. 10 percent, c. 11 percent, d. 12 percent | b | T_3521 | text | null | A base is an ionic compound that produces negative hydroxide ions (OH ) when dissolved in water. For example, when the compound sodium hydroxide (NaOH) dissolves in water, it produces hydroxide ions and positive sodium ions (Na+ ). This can be represented by the equation: NaOH H2 O ! OH + Na+ | 0.620416 |
NDQ_018487 | todd made a saltwater solution containing 100 g of salt and 900 g of water. what is the concentration of the solution? | null | a. 9 percent, b. 10 percent, c. 11 percent, d. 12 percent | b | T_0024 | text | null | Flowing water slows down when it reaches flatter land or flows into a body of still water. What do you think happens then? The water starts dropping the particles it was carrying. As the water slows, it drops the largest particles first. The smallest particles settle out last. | 0.618521 |
NDQ_018487 | todd made a saltwater solution containing 100 g of salt and 900 g of water. what is the concentration of the solution? | null | a. 9 percent, b. 10 percent, c. 11 percent, d. 12 percent | b | T_4893 | text | null | A given kind of matter has the same chemical makeup and the same chemical properties regardless of its state. Thats because state of matter is a physical property. As a result, when matter changes state, it doesnt become a different kind of substance. For example, water is still water whether it exists as ice, liquid water, or water vapor. | 0.610888 |
NDQ_018487 | todd made a saltwater solution containing 100 g of salt and 900 g of water. what is the concentration of the solution? | null | a. 9 percent, b. 10 percent, c. 11 percent, d. 12 percent | b | T_3941 | text | null | Why do different states of matter have different properties? Its because of differences in energy at the level of atoms and molecules, the tiny particles that make up matter. | 0.607926 |
NDQ_018487 | todd made a saltwater solution containing 100 g of salt and 900 g of water. what is the concentration of the solution? | null | a. 9 percent, b. 10 percent, c. 11 percent, d. 12 percent | b | T_3956 | text | null | If you fill a pot with cool tap water and place the pot on a hot stovetop, the water heats up. Heat energy travels from the stovetop to the pot, and the water absorbs the energy from the pot. What happens to the water next? | 0.606466 |
NDQ_018487 | todd made a saltwater solution containing 100 g of salt and 900 g of water. what is the concentration of the solution? | null | a. 9 percent, b. 10 percent, c. 11 percent, d. 12 percent | b | T_0669 | text | null | Most water on Earth, like the water in the oceans, contains elements. The elements are mixed evenly through the water. Water plus other substances makes a solution. The particles are so small that they will not come out when you filter the water. But the elements in water can form solid mineral deposits. | 0.59587 |
NDQ_018487 | todd made a saltwater solution containing 100 g of salt and 900 g of water. what is the concentration of the solution? | null | a. 9 percent, b. 10 percent, c. 11 percent, d. 12 percent | b | T_4018 | text | null | Water (H2 O) is an example of a chemical compound. Water molecules always consist of two atoms of hydrogen and one atom of oxygen. Like water, all other chemical compounds consist of a fixed ratio of elements. It doesnt matter how much or how little of a compound there is. It always has the same composition. | 0.594319 |
NDQ_018487 | todd made a saltwater solution containing 100 g of salt and 900 g of water. what is the concentration of the solution? | null | a. 9 percent, b. 10 percent, c. 11 percent, d. 12 percent | b | T_0147 | text | null | Freshwater below Earths surface is called groundwater. The water infiltrates, or seeps down into, the ground from the surface. How does this happen? And where does the water go? | 0.59167 |
NDQ_018489 | a solution is any mixture of two or more substances. | null | a. true, b. false | b | DQ_011479 | image | abc_question_images/states_of_matter_17613.png | states_of_matter_17613.png | 0.287663 |
NDQ_018489 | a solution is any mixture of two or more substances. | null | a. true, b. false | b | DQ_011501 | image | question_images/states_of_matter_7614.png | states_of_matter_7614.png | 0.284763 |
NDQ_018489 | a solution is any mixture of two or more substances. | null | a. true, b. false | b | T_4894 | image | textbook_images/states_of_matter_23100.png | FIGURE 1.2 | 0.281772 |
NDQ_018489 | a solution is any mixture of two or more substances. | null | a. true, b. false | b | DQ_011497 | image | question_images/states_of_matter_7613.png | states_of_matter_7613.png | 0.27849 |
NDQ_018489 | a solution is any mixture of two or more substances. | null | a. true, b. false | b | DQ_011523 | image | question_images/states_of_matter_9252.png | states_of_matter_9252.png | 0.277787 |
NDQ_018489 | a solution is any mixture of two or more substances. | null | a. true, b. false | b | DQ_011490 | image | abc_question_images/states_of_matter_19255.png | states_of_matter_19255.png | 0.271109 |
NDQ_018489 | a solution is any mixture of two or more substances. | null | a. true, b. false | b | T_4861 | image | textbook_images/solids_23082.png | FIGURE 1.1 | 0.270602 |
NDQ_018489 | a solution is any mixture of two or more substances. | null | a. true, b. false | b | T_3930 | image | textbook_images/types_of_matter_22527.png | FIGURE 3.13 These three mixtures differ in the size of their particles. Which mixture has the largest particles? Which has the smallest particles? | 0.268066 |
NDQ_018489 | a solution is any mixture of two or more substances. | null | a. true, b. false | b | DQ_011534 | image | question_images/states_of_matter_9255.png | states_of_matter_9255.png | 0.266036 |
NDQ_018489 | a solution is any mixture of two or more substances. | null | a. true, b. false | b | T_0670 | image | textbook_images/formation_of_minerals_20459.png | FIGURE 3.18 When the water in glass A evaporates, the dissolved mineral particles are left behind. calcite tufa towers form. When the lake level drops, the tufa towers are revealed. | 0.261417 |
NDQ_018489 | a solution is any mixture of two or more substances. | null | a. true, b. false | b | T_2237 | text | null | All known matter can be divided into a little more than 100 different substances called elements. | 0.812629 |
NDQ_018489 | a solution is any mixture of two or more substances. | null | a. true, b. false | b | T_4715 | text | null | Compare and contrast the basic properties of matter, such as mass and volume. | 0.775752 |
NDQ_018489 | a solution is any mixture of two or more substances. | null | a. true, b. false | b | T_0638 | text | null | To understand minerals, we must first understand matter. Matter is the substance that physical objects are made of. | 0.75281 |
NDQ_018489 | a solution is any mixture of two or more substances. | null | a. true, b. false | b | T_4893 | text | null | A given kind of matter has the same chemical makeup and the same chemical properties regardless of its state. Thats because state of matter is a physical property. As a result, when matter changes state, it doesnt become a different kind of substance. For example, water is still water whether it exists as ice, liquid water, or water vapor. | 0.750695 |
NDQ_018489 | a solution is any mixture of two or more substances. | null | a. true, b. false | b | T_1447 | text | null | Minerals are divided into groups based on chemical composition. Most minerals fit into one of eight mineral groups. | 0.735879 |
NDQ_018489 | a solution is any mixture of two or more substances. | null | a. true, b. false | b | T_3491 | text | null | Vitamins and minerals are also nutrients. They do not provide energy, but they are needed for good health. | 0.734496 |
NDQ_018489 | a solution is any mixture of two or more substances. | null | a. true, b. false | b | T_3918 | text | null | Some properties of matter can be measured or observed only when matter undergoes a change to become an entirely different substance. These properties are called chemical properties. They include flammability and reactivity. | 0.731635 |
NDQ_018489 | a solution is any mixture of two or more substances. | null | a. true, b. false | b | T_1797 | text | null | The two types of air pollutants are primary pollutants, which enter the atmosphere directly, and secondary pollutants, which form from a chemical reaction. | 0.731193 |
NDQ_018489 | a solution is any mixture of two or more substances. | null | a. true, b. false | b | T_1674 | text | null | Remember that H2 O is a polar molecule, so it can dissolve many substances (Figure 1.1). Salts, sugars, acids, bases, and organic molecules can all dissolve in water. | 0.727883 |
NDQ_018489 | a solution is any mixture of two or more substances. | null | a. true, b. false | b | T_2746 | text | null | Like all organisms, bacteria need energy, and they can acquire this energy through a number of different ways. | 0.72648 |
NDQ_018491 | dissolved particles in a solution | null | a. are too small to be seen., b. will settle out of the solution., c. will rise to the top of the solution., d. two of the above | a | T_4432 | image | textbook_images/evaporation_22833.png | FIGURE 1.1 | 0.364245 |
NDQ_018491 | dissolved particles in a solution | null | a. are too small to be seen., b. will settle out of the solution., c. will rise to the top of the solution., d. two of the above | a | DQ_011479 | image | abc_question_images/states_of_matter_17613.png | states_of_matter_17613.png | 0.346034 |
NDQ_018491 | dissolved particles in a solution | null | a. are too small to be seen., b. will settle out of the solution., c. will rise to the top of the solution., d. two of the above | a | T_3616 | image | textbook_images/pressure_of_fluids_22293.png | FIGURE 15.3 Differences in density between water and air lead to differences in pressure. | 0.336371 |
NDQ_018491 | dissolved particles in a solution | null | a. are too small to be seen., b. will settle out of the solution., c. will rise to the top of the solution., d. two of the above | a | T_4740 | image | textbook_images/pressure_in_fluids_23030.png | FIGURE 1.3 | 0.335912 |
NDQ_018491 | dissolved particles in a solution | null | a. are too small to be seen., b. will settle out of the solution., c. will rise to the top of the solution., d. two of the above | a | DQ_011492 | image | abc_question_images/states_of_matter_19256.png | states_of_matter_19256.png | 0.335875 |
NDQ_018491 | dissolved particles in a solution | null | a. are too small to be seen., b. will settle out of the solution., c. will rise to the top of the solution., d. two of the above | a | DQ_011501 | image | question_images/states_of_matter_7614.png | states_of_matter_7614.png | 0.334893 |
NDQ_018491 | dissolved particles in a solution | null | a. are too small to be seen., b. will settle out of the solution., c. will rise to the top of the solution., d. two of the above | a | T_4180 | image | textbook_images/boyles_law_22686.png | FIGURE 1.1 | 0.333845 |
NDQ_018491 | dissolved particles in a solution | null | a. are too small to be seen., b. will settle out of the solution., c. will rise to the top of the solution., d. two of the above | a | DQ_002681 | image | question_images/radioactive_decay_7516.png | radioactive_decay_7516.png | 0.329825 |
NDQ_018491 | dissolved particles in a solution | null | a. are too small to be seen., b. will settle out of the solution., c. will rise to the top of the solution., d. two of the above | a | DQ_011512 | image | question_images/states_of_matter_7618.png | states_of_matter_7618.png | 0.328283 |
NDQ_018491 | dissolved particles in a solution | null | a. are too small to be seen., b. will settle out of the solution., c. will rise to the top of the solution., d. two of the above | a | T_1444 | image | textbook_images/mineral_formation_20947.png | FIGURE 1.2 | 0.323463 |
NDQ_018491 | dissolved particles in a solution | null | a. are too small to be seen., b. will settle out of the solution., c. will rise to the top of the solution., d. two of the above | a | T_3941 | text | null | Why do different states of matter have different properties? Its because of differences in energy at the level of atoms and molecules, the tiny particles that make up matter. | 0.618103 |
NDQ_018491 | dissolved particles in a solution | null | a. are too small to be seen., b. will settle out of the solution., c. will rise to the top of the solution., d. two of the above | a | T_3960 | text | null | Solids that change to gases generally first pass through the liquid state. However, sometimes solids change directly to gases and skip the liquid state. The reverse can also occur. Sometimes gases change directly to solids. | 0.615044 |
NDQ_018491 | dissolved particles in a solution | null | a. are too small to be seen., b. will settle out of the solution., c. will rise to the top of the solution., d. two of the above | a | T_3943 | text | null | The particles that make up matter are also constantly moving. They have kinetic energy. The theory that all matter consists of constantly moving particles is called the kinetic theory of matter. You can learn more about it at the URL below. | 0.614969 |
NDQ_018491 | dissolved particles in a solution | null | a. are too small to be seen., b. will settle out of the solution., c. will rise to the top of the solution., d. two of the above | a | T_4893 | text | null | A given kind of matter has the same chemical makeup and the same chemical properties regardless of its state. Thats because state of matter is a physical property. As a result, when matter changes state, it doesnt become a different kind of substance. For example, water is still water whether it exists as ice, liquid water, or water vapor. | 0.61354 |
NDQ_018491 | dissolved particles in a solution | null | a. are too small to be seen., b. will settle out of the solution., c. will rise to the top of the solution., d. two of the above | a | T_0024 | text | null | Flowing water slows down when it reaches flatter land or flows into a body of still water. What do you think happens then? The water starts dropping the particles it was carrying. As the water slows, it drops the largest particles first. The smallest particles settle out last. | 0.60648 |
NDQ_018491 | dissolved particles in a solution | null | a. are too small to be seen., b. will settle out of the solution., c. will rise to the top of the solution., d. two of the above | a | T_1674 | text | null | Remember that H2 O is a polar molecule, so it can dissolve many substances (Figure 1.1). Salts, sugars, acids, bases, and organic molecules can all dissolve in water. | 0.596105 |
NDQ_018491 | dissolved particles in a solution | null | a. are too small to be seen., b. will settle out of the solution., c. will rise to the top of the solution., d. two of the above | a | T_4018 | text | null | Water (H2 O) is an example of a chemical compound. Water molecules always consist of two atoms of hydrogen and one atom of oxygen. Like water, all other chemical compounds consist of a fixed ratio of elements. It doesnt matter how much or how little of a compound there is. It always has the same composition. | 0.583832 |
NDQ_018491 | dissolved particles in a solution | null | a. are too small to be seen., b. will settle out of the solution., c. will rise to the top of the solution., d. two of the above | a | T_0691 | text | null | Sedimentary rocks form in two ways. Particles may be cemented together. Chemicals may precipitate. | 0.576948 |
NDQ_018491 | dissolved particles in a solution | null | a. are too small to be seen., b. will settle out of the solution., c. will rise to the top of the solution., d. two of the above | a | T_3918 | text | null | Some properties of matter can be measured or observed only when matter undergoes a change to become an entirely different substance. These properties are called chemical properties. They include flammability and reactivity. | 0.573057 |
NDQ_018491 | dissolved particles in a solution | null | a. are too small to be seen., b. will settle out of the solution., c. will rise to the top of the solution., d. two of the above | a | T_4174 | text | null | Vaporization is easily confused with evaporation, but the two processes are not the same. Evaporation also changes a liquid to a gas, but it doesnt involve boiling. Instead, evaporation occurs when particles at the surface of a liquid gain enough energy to escape into the air. This happens without the liquid becoming hot enough to boil. | 0.570756 |
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