Matter

4. type of phase change that takes place when a solid turns directly into a gas
6. a mixture consists of two or more phases
8. a substance where the particles are still close together, but not as tightly bonded or in a fixed
9. formed by the combination of any positive ions except hydrogen and any negative ion except hydroxide ion
11. a mixture consists of only one phase
15. an ionized gas, a gas into which sufficient energy is provided to free electrons from atoms
16. the process where water vapor becomes liquid
19. transition where a liquid turns into a solid when its temperature is lowered below its freezing point
20. conversion of a substance from the liquid or solid phase into the gaseous phase.
21. particle that consists of a nucleus of protons and neutrons

1. when a substance in gas form changes states to become a solid
2. contain a metal with hydroxyl group
3. state of matter, in which separate subatomic particles or atoms, cooled to approximately absolute zero
5. consist of oxygen and one other element
7. anything that occupies space and has mass
10. a state of matter that retains its shape and density when not confined
12. The process in which a solids change to a liquid
13. the extent that which a material is magnetic
14. a substance that has no fixed size or shape
17. a chemical substance, usually a liquid, which contains hydrogen and can react with other substances to form salts
18. the branch of science that deals with the identification of the substances of which matter is composed