3. When a chemical change occurs, no new matter is made and no matter is destroyed. This is a pa nature. Scientists know that they can expect the amount of matter to be the same before and after the
change. Which of these is used to describe what happens to matter in a chemical change?
A. a hypothesis
B. a scientific law
C. a scientific theory
D. scientific skepticism

i think its 100

i hope this !

answeridentity;

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.