Classifying Matter

2. Solution of two or more metals
5. smallest unit of a compound
8. Mixture in which particles scatter light but never settle out
11. Property of matter defined as mass/volume
13. The salt in a salt-water solution
14. Substance that is not completely mixed or one in which different parts can be seen
15. Type of matter in which individual parts do not chemically combine together
17. Mixture in which particles are extremely small, do not settle and do not scatter light
18. Technique that separates mixtures by particle size
19. Pure substance made up of 2 or more different types of atoms
20. smallest unit of an element
21. A compound can always be written using a chemical ___ which shows the type and number of atoms in the compound

1. A change that does not produce new types of matter. Usually a change in size, shape or state of matter (A + b --> A + B)
3. The scattering of light in a colloid is called the ___ Effect
4. Substance in which individual parts can not be seen
6. technique that separates mixtures by solubility
7. Mixture in which particles are big enough to settle out over time
9. Anything that takes up space and has mass
10. Pure substance made up of only one type of atom
11. Technique that separates mixtures by boiling point
12. The temperature that a substance boils is called the ___ point
15. Iron filings can be separated from sand using the property of ___
16. The water in a salt-water solution
19. A change that produces new types of matter (A + B --> C + D)