compare and contrast

by jorge perez

physical change

Physical changes occur when objects or substances undergo a change that does not change their chemical composition.

chemical change

Chemical change occur when a substance combines with another to form a new substance


To cause an event to suddenly happen


The term exothermic describes a process or reaction that releases energy from the system.
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The term endothermic describes a process or reaction in which the system absorbs energy from its surroundings in the form of heat.