(Q).
Answer the following question given this paragraph:   Some regions of the electron cloud are denser than others. The denser regions are areas where electrons are most likely to be. These regions are called orbitals . Each orbital has a maximum of just two electrons. Different energy levels in the cloud have different numbers of orbitals. Therefore, different energy levels have different maximum numbers of electrons. Table below lists the number of orbitals and electrons for the first four energy levels. Energy levels farther from the nucleus have more orbitals. Therefore, these levels can hold more electrons.   Q: The denser regions of the electron cloud are called what?   Choices:  - cores  - lattices  - isotopes  - orbitals  A:
(A).
orbitals


(Q).
Answer the following question given this paragraph:   Inorganic chemical compounds can be broadly classified into two groups: ionic compounds and molecular compounds. The structure of all ionic compounds is an extended three-dimensional array of alternating positive and negative ions. Since ionic compounds do not take the form of individual molecules, they are represented by empirical formulas. Now we will begin to examine the formulas and nomenclature of molecular compounds.   Q: Inorganic chemical compounds can be broadly classified into two groups: ionic compounds and which other group?   Choices:  - cellular compounds  - atomic compounds  - electromagnetic compounds  - molecular compounds  A:
(A).
molecular compounds


(Q).
Answer the following question given this paragraph:   Secondary Succession. Two months after a forest fire, new plants are already sprouting among the charred logs.   Q: When did new plants start sprouting after the forest fire?   Choices:  - five months later  - two weeks later  - two days later  - two months later  A:
(A).
