Matter

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Across
  1. 1. Solution containing a substance that produces a hydrogen ions (H+) in water
  2. 6. volume and mass
  3. 8. little mass; Negative charge
  4. 9. same mass as proton; no charge
  5. 11. liquid to gas at temperatures below boiling point
  6. 12. Slow change from solid to gas
Down
  1. 2. substance composed of atoms of 2+ different elements
  2. 3. composed of 2+ molecules
  3. 4. solution containing a substance that produces a hydrogen ions (H-) in water
  4. 5. tiny particle; positive electric charge
  5. 7. gas is cooled to boiling point and releases thermal energy
  6. 10. Homogeneus mixture
  7. 13. Electrically charged atom