Chemistry

2. The measure of how much “stuff” (atoms/molecules) is packed in a unit of volume.
4. The measure of the amount of matter in a substance.
7. Combination of two or more atoms bonded together
10. Single, smallest unit of matter
11. The conditions in which matter exists (solid, liquid, gas, or plasma).
12. A physical model that represents molecules and their processes.
13. Showing a chemical reaction using words rather than symbols to represent the substances.
15. The substance(s) that are produced by a chemical reaction.
16. A material with the same atoms or molecules all the way through (Pure)

1. A characteristic that never changes
3. The ability of a substance to dissolve and mix in evenly with another substance.
4. The temperature at which a substance changes state of matter from a solid to a liquid.
5. The total amount of three dimensional space taken up by a solid, liquid, or gas.
6. A property that describes how easily or difficult a substance can be scratched.
8. Two or more different atoms or molecules, or not the same all the way through (Not pure)
9. An expression of a chemical reaction using numbers and symbols of the type of atoms present.
14. The starting substance(s), that react together, in a chemical reaction.