kinetic theory

4. change in which the form or appearance of matter changes,but not its composition
6. matter that has the same composition and properties throughout
9. matter with a definite volume but no definite shape that can flow from one place to another
10. matter that does not have a definite shape or volume;has particles that move at high speeds in all direcrions
11. elements in group 18 of the periodic table
12. a substance produced when elements combine and whose properties are different from each of the elements in it
14. electricity-neutral particle that has the same mass as a proton and is found in an atoms nucleus
16. movement of thermal energy from a substance at a higher temperature to a substance at a lower temperature
17. substance that cannot be broken down into simpler substances
19. positively-charged particle in the nucleus of an atom
20. change of matter changing from a solid state to a liquid state

1. the process of changing from a gas to a liquid
2. element that is malleable, ductile a good conductor of electricity, and generally has a shiny or or metallic luster
3. elements in group 17 of the periodic table
5. matter with a definite shape and volume;has tightly packed particles that move mainly by vibrating
7. measure of the average kinetic energy of the individual particles of a substance
8. substance that can make something happen faster but is not changed itself
13. force exerted on a surface divided by the total area over which the force is exerted
15. change of matter from a liquid state to a solid state
18. negatively charged particle that exists in an electron cloud formation around an atoms nucleus