Matter

5. A neutral particle made up of two or more atoms joined by covalent bonds.
6. A characteristic of a pure substance that can be observed without changing it into another substance.
7. A pure substance that cannot be broken down into other substances by chemical or physical means.
9. The basic particle from which all elements are made.
12. A mixture in which substances are evenly distributed throughout the mixture.
13. The central core of an atom. (Protons and neutrons are found in the nucleus.)
14. The ability to do work or cause change.
15. A single kind of matter that is pure and has a specific set of properties.
17. A characteristic of a pure substance that describes its ability to change into a different substance.
18. Two or more substances that are mixed together but not chemically combined.
19. The principle that the total amount of matter is neither created or destroyed during any chemical or physical change.
20. The ratio of the mass of a substance to its volume.

1. Energy that an object has due to its motion.
2. A mixture in which pure substances are unevenly distributed throughout the mixture.
3. A change in which one or more substances combine or break apart to form new substances.
4. A pure substance made up of two or more elements chemically combined.
8. Anything that has mass and occupies space.
10. The amount of space that matter occupies.
11. Stored energy that results from the position or shape of an object.
16. A change in a substance that does not change its identity.