Stoichiometry

3. tells you by mass what percent of each element is present in a compound
4. a chemical formula showing the simplest ratio of elements in a compound rather than the total number of atoms in the molecule
5. a compound, typically a crystalline one, in which water molecules are chemically bound to another compound or an element.
7. the relationship between the relative quantities of substances taking part in a reaction or forming a compound, typically a ratio of whole integers.
10. the unit of amount of substance in the International System of Units
12. a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.
13. the chemical formula of an ionic compound that lists the ions in the lowest ratio that equals a neutral electrical charge

1. the number of atoms or molecules in one mole of a substance, equal to 6.023 × 1023.
2. an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge are the same for both the reactants and the products
6. an arithmetical multiplier for converting a quantity expressed in one set of units into an equivalent expressed in another.
8. a sample of matter with both definite and constant composition and distinct chemical properties
9. a formula giving the number of atoms of each of the elements present in one molecule of a specific compound.
11. the mass of a sample of that compound divided by the amount of substance which is the number of moles in that sample