Vocabulary

3. - the tendency of a liquid to keep from flowing; a resistance to flowing
6. mixture - a type of mixture in which the substances are so evenly distributed that it is difficult to distinguish one substance in the mixture from another
8. - the ability of a solid to be hammered without shattering
10. Point - the temperature at which a substance changes from solid to liquid
13. mixture - a type of mixture in which the parts of the mixture are noticeably different from one another
14. property - any characteristic of a material that can be observed or measured without changing the composition of the substances in the material
17. change - change that occurs when a substance reacts and forms one or more new substances
20. - the smallest particle of an element
21. - a process that separates the substances in a solution based on their boiling points
22. - a homogeneous mixture that contains some particles that are intermediate in size between the small particles in a solution and the larger particles in a suspension; usually opaque

1. - a heterogeneous mixture that separates into layers over time
2. - a substance that is made from two or more elements chemically combined in a specific ratio
4. - a material’s ability to allow heat or electric charges to flow
5. Point - the temperature at which a substance boils
7. - matter that always has exactly the same composition; an element or compound fits into this category
9. Change - a change that occurs when some properties of a material change, but the substances in the material stay the same
11. property - any property that produces a change in the composition of matter
12. - a process that separates materials based on the size of their particles
15. - the property that describes how readily a substance combines chemically with other substances
16. - a material’s ability to burn in the presence of oxygen
18. - a substance that cannot be broken down into simpler substances
19. - a homogeneous mixture that forms when substances dissolve; usually transparent