Answer the following question given this paragraph:   An acid is an ionic compound that produces positive hydrogen ions when dissolved in water. Acids taste sour and turn blue litmus paper red.   Q: What is the term for an ionic compound that produces positive hydrogen ions when dissolved in water?   Choices:  - hydrocarbon  - sulfur  - base  - acid  A:
acid
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Answer the following question given this paragraph:   To Your Health: Energy Expenditures Most health professionals agree that exercise is a valuable component of a healthy lifestyle. Exercise not only strengthens the body and develops muscle tone but also expends energy. After obtaining energy from the foods we eat, we need to expend that energy somehow, or our bodies will store it in unhealthy ways. Like the energy content in food, the energy expenditures of exercise are also reported in kilocalories, usually kilocalories per hour of exercise. These expenditures vary widely, from about 440 kcal/h for walking at a speed of 4 mph to 1,870 kcal/h for mountain biking at 20 mph. Table 7.2 "Energy Expenditure of a 180-Pound Person during Selected Exercises" lists the energy expenditure for a variety of exercises. Saylor URL: http://www. saylor. org/books.   Q: Like the energy content in food, the energy expenditures of exercise are also reported in what units?   Choices:  - ironies  - gigabytes  - grams  - kilocalories  A:
kilocalories
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Answer the following question given this paragraph:   In the study of chemical reactivity, we will find that the electrons in the outermost principal energy level are very important and so they are given a special name. Valence electrons are the electrons in the highest occupied principal energy level of an atom. In the second period elements listed above, the two electrons in the 1 s sublevel are called inner-shell electrons and are not involved directly in the element’s reactivity or in the formation of compounds. Lithium has a single electron in the second principal energy level and so we say that lithium has one valence electron. Beryllium has two valence electrons. How many valence electrons does boron have? You must recognize that the second principal energy level consists of both the 2 s and the 2 p sublevels and so the answer is three. In fact, the number of valence electrons goes up by one for each step across a period until the last element is reached. Neon, with its configuration ending in s 2 p 6 , has eight valence electrons.   Q: What is electrons in the highest occupied principal energy level of an atom called?   Choices:  - non-valence electrons  - shell electrons  - gradient electrons  - valence electrons  A:
valence electrons
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Answer the following question given this paragraph:   The pancreas is a large gland located near the stomach. Hormones secreted by the pancreas include insulin. Insulin helps cells absorb glucose from the blood. It also stimulates the liver to take up and store excess glucose.   Q: Which hormone is secreted by the pancreas in a human body?   Choices:  - growth hormone  - progesterone  - estrogen  - insulin  A:
