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 ...

An overview of the definitions of different types of chemicals ... ways to distinguish physical and chemical changes. Chemical equations and calculations Reaction information is shown using ...

Chemical reactions make new chemicals. Atoms are rearranged during a chemical reaction, but the number of atoms does not change. Evidence of chemical reactions includes a large temperature change ...

This happens through two different types of chemical reactions. The reaction when the cathode gains electrons is called reduction. The reaction when the anode loses electrons is called oxidation.