Unit 1: Matter

4. the substance in which the solute dissolves
5. a measure of how easily a substance bursts into flame, through fire or combustion
7. Heat energy
9. A pure substance made of only one kind of atom
11. The temperature at which a solid becomes a liquid
14. A substance that is dissolved in a solution
15. The ability to dissolve in another substance
17. The temperature at which a liquid changes to a gas
20. Matter cannot be created or destroyed
22. anything that takes up space and has mass
23. Gas to liquid
25. Liquid to gas
27. a diagram that shows the temperature changes and changes of state of a substance as it is heated
28. A mixture that forms when one substance dissolves another
30. The temperature at which a liquid changes to a gas

1. a measure of a fluid's resistance to flow
2. compactness of a substance
3. the theory that all matter is composed of particles (atoms and molecules) moving constantly in random directions
6. gas to solid
8. energy of motion
10. solid to gas
12. the process by which one or more substances change to produce one or more different substances
13. How readily a substance combines chemically with other substances
15. matter with a composition that is always the same
16. two or more elements or compounds that are physically mixed together but not chemically combined
18. substance formed by the chemical combination of two or more elements
19. The amount of energy required for the liquid at its boiling point to become a gas
21. A chemical change in which a substance combines with oxygen, as when iron oxidizes, forming rust
24. 4th state of matter (lightening/ the sun are examples)
26. amount of energy required to change a substance from the solid phase to the liquid phase
29. stored energy