Stoichiometry

8. the mass of a chemical compound divided by its amount-of-substance measured in moles
9. a single kind of matter that cannot be separated into other kinds of matter by any physical means
10. an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
14. refers to the relationship between the quantities of reactants and products before, during, and following chemical reactions.
15. a formula giving the proportions of the elements present in a compound but not the actual numbers or arrangement of atoms.
16. tells you by mass what percent of each element is present in a compound

1. factor that is used to change between units, and therefore gives the relationship between two units.
2. the number of atoms or molecules in one mole of a substance, equal to 6.023 × 1023.
3. a chemical formula used to show the ratio between the atoms or ions
4. the basic unit of a chemical element.
5. The crystalline chemical compound or the substances that contain a water molecule as a constituent of the compound.
6. 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.
7. a formula giving the number of atoms of each of the elements present in one molecule of a specific compound.
11. the relationship between the relative quantities of substances taking part in a reaction or forming a compound, typically a ratio of whole integers
12. A mole corresponds to the mass of a substance that contains 6.023 x 1023 particles of the substance.
13. 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.