Science

2. Substance matter that always has exactly the same composition; an element or compound fits into this category
11. a process that separates materials based on the size of their particles
12. the ability of a solid to be hammered without shattering
13. the property that describes how readily a substance combines chemically with other substances
16. property any characteristic of a material that can be observed or measured without changing the composition of the substances in the material
18. 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
20. a material’s ability to allow heat or electric charges to flow
21. Point the temperature at which a substance boils
22. Point the temperature at which a substance changes from solid to liquid

1. a heterogeneous mixture that separates into layers over time
3. a substance that cannot be broken down into simpler substances
4. the tendency of a liquid to keep from flowing; a resistance to flowing
5. Change a change that occurs when some properties of a material change, but the substances in the material stay the same
6. a material’s ability to burn in the presence of oxygen
7. the smallest particle of an element
8. a process that separates the substances in a solution based on their boiling points
9. property any property that produces a change in the composition of matter
10. a mixture that forms when substances dissolve and form a homogeneous mixture
14. change change that occurs when a substance reacts and forms one or more new substances
15. a mixture that contains some particles that are intermediate in size between the small particles in a solution and the larger particles in a suspension
17. a substance that is made from two or more simpler substances and can be broken down into those simpler substances
19. mixture a type of mixture in which the parts of the mixture are noticeably different from one another