Use the drop-down menus to complete each of the sentences. Isotopes behave similarly in . involve only a rearrangement of electrons, and do not involve changes in protons or neutrons. In , 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

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .