Isotopes behave similarly in
involve only a rearrangement of electrons, and do not
involve changes in protons or neutrons.
. a large amount of energy is released or absorbed.
new elements can be formed as a result of
exothermic and endothermic reactions can occur during

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

How does a large body of water, such as the ocean, influence climate?