Across
- 2. a substance that has definite volume but on shape
- 4. a pure substance that cannot be broken down into simpler substances and that combines with other elements to form all other substances
- 5. a group of two or more atoms held together by very strong chemical bonds
- 6. negatively charged
- 8. a state of electrically charged matter that forms only at very high temperatures such as those existing in stars
- 10. that process by which a gas changes to a liquid
- 12. substances that are evenly distributed throughout
Down
- 1. a combination of substances in which the individual substances do not change or combine chemically
- 3. are not distributed evenly throughout
- 7. a pure substance that forms when two or more elements join chemically in fixed proportions
- 9. a substance that has neither definite shape nor volume
- 11. a substance that has a definite shape an volume