CHEMISTRY

3. A number assigned to an element in a compound that indicates its degree of oxidation or reduction.
5. The principle stating that matter cannot be created or destroyed in a chemical reaction.
9. A symbolic representation of a chemical reaction showing reactants, products, and their coefficients.
11. A chemical reaction in which oxidation and reduction occur simultaneously through electron transfer.
12. The mass of one mole of a substance, usually expressed in grams per mole (g/mol).
13. A substance that donates electrons to another substance and becomes oxidized.
14. The study of the quantitative relationships between reactants and products in chemical reactions.

1. A substance that causes another substance to be oxidized by accepting its electrons.
2. The process in which a substance gains electrons during a chemical reaction.
4. The number placed before a chemical formula in a chemical equation indicating the relative number of molecules or moles involved.
6. The process in which a substance loses electrons in a chemical reaction.
7. The process of adjusting coefficients so that the number of atoms of each element is equal on both sides of the equation.
8. The relationship between quantities of substances in terms of their moles in a reaction.
9. The electrical property of a particle determined by the number of protons and electrons it has.
10. The ratio between the amounts in moles of two substances in a balanced chemical equation.