Stoichiometry

1. A chemical equation where the number of each type of atom is the same on both sides.
3. The total of the masses of all the atoms in a molecule.
8. Describes a chemical reaction using words instead of symbols.
11. The space occupied by one unit of gas at standard temperature and pressure.
13. Letters used in equations to show whether a substance is solid, liquid, gas, or dissolved in water.
14. An equation that shows only the reacting particles in a chemical reaction.
15. The total of the masses of all the atoms in a compound.
17. Substances formed as a result of a chemical reaction.
18. Standard conditions of temperature and pressure, often used in experiments.

2. A short abbreviation used to represent an element.
4. A group of atoms with a charge that acts as a single unit.
5. The mass of one unit of a substance measured in grams.
6. The simplest ratio of ions in an ionic compound.
7. Shows the exact number of each type of atom in a molecule.
9. that start a chemical reaction.
10. States that equal volumes of gases have the same number of particles under the same conditions.
12. The number of particles in one unit of a substance.
16. A unit for counting very large numbers of particles.