Which of the following statements is true? a. Kinetic energy depends on mass and speed.
b. Heat and temperature are the same.
c, Atomic energy is the energy in chemical bonds.
d. Work can only be done with potential energy.

c. 75.7

i think that is the right

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.