Compare and Contrast Chemicals

By Alex Lightfoot

Physical Change

Physical changes are about energy and states of matter. For example when ice melts.

Chemical Changes

Chemical changes occur when a substance combines with another to form a new substance.

For examlpe: baking soda and vinegar

Precipitate, Exothermic, and Endothermic

Precipitate: cause (an event or situation, typically one that is bad or undesirable) to happen suddenly, unexpectedly, or prematurely.

Ex. a new experiment


Exothermic and Endothermic: term usually used to describe two types of chemical reactions or systems found in nature. ex. fire