Chemical reactions can be represented using equations. Compounds are chemical substances that contain more than one element. They're created during a chemical reaction where atoms are rearranged ...

Students recognize that a particular color change is a characteristic property of a substance and that a color change can also be used as evidence that a chemical reaction has occurred. Students will ...

Because substances are made up of different atoms and molecules, they react in characteristic ways. Production of a gas, color changes, a change in temperature, and the formation of a precipitate are ...

A key objective of ongoing research rooted in molecular physics is to understand and precisely control chemical reactions at ...