chemistry

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Across
  1. 3. a subatomic particle with a positive charge
  2. 6. the temperature at which a liquid turns into a solid
  3. 7. a subatomic particle with a negative charge
  4. 10. a state of matter with a defined volume but no defined shape
  5. 11. material that has mass and takes some space
  6. 13. the temperature at which a solid turns into a liquid
  7. 14. electron proton and neutron
  8. 15. the process by which a gas changes into a liquid
  9. 17. the process in which matter changes from a liquid to a gas
Down
  1. 1. a subatomic particles with no electric charge
  2. 2. two or more joined atoms
  3. 4. matter phase change from solid directly to gas
  4. 5. a property of matter which is undergoing phase change from liquid to gas
  5. 8. Mercury Gold Curium
  6. 9. a pure substance when 2 or more elements are combined
  7. 12. solid matter with a fixed volume and shape
  8. 16. a state of matter without any defined volume or shape