Chemistry Class

2. a chemical change that occurs when two or more substances combine to form a new substance.
4. an aggregate of two or more substances that are not chemically united and that exist in no fixed proportion to each other.
6. a mixture in which the composition is not uniform throughout the mixture.
8. the branch of science that deals with the identification of the substances of which matter is composed
10. atoms as a source of nuclear energy.
11. an uncharged elementary particle that has a mass nearly equal to that of the proton and is present in all known atomic nuclei except the hydrogen nucleus.
12. a subatomic particle found in the nucleus of every atom.
13. a homogenous mixture of two or more substances in relative amounts that can be varied continuously up to what is called the limit of solubility.
14. process by which an element or compound transitions from its liquid state to its gaseous state below the temperature at which it boils
15. a substance made from two or more different elements that have been chemically joined.
16. an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.

1. the mechanical or physical process used for the separation of one substance from another, such as solids, liquids, and gases, with the aid of an interposing medium (filter).
3. physical substance in general, as distinct from mind and spirit; (in physics) that which occupies space and possesses rest mass, especially as distinct from energy.
5. a negatively charged subatomic particle.
7. process involving the conversion of a liquid into vapour that is subsequently condensed back to liquid form.
9. a mixture in which the composition is uniform throughout the mixture.