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