Across
- 3. Compounds are made from _______ of two or more elements?
- 5. Have very different properties than their component elements?
- 7. When recognizing chemical changes, you'll see _______ changes?
- 9. Substances that are formed during the reaction?
- 11. Beginning substances that start a reaction?
- 12. Not easily reversed?
- 13. Energy that is easily transferred between objects?
- 14. Particles of matter are always in _________?
- 15. Have properties of both metals and nonmetals?
Down
- 1. A measure of the amount of matter?
- 2. A process that releases energy into the surroundings?
- 4. A process that absorbs energy from the surroundings?
- 6. What is anything with mass that occupies space?
- 8. Many are gases?
- 10. Most are solids at room temperature