States of matter

123456789101112131415161718192021
Across
  1. 4. Energy of movement
  2. 5. Two or more atoms chemically bonded together
  3. 7. Where the protons and neutrons are found
  4. 10. Where the electrons are found in an atom
  5. 12. Can be drawn into wires
  6. 14. The more kinetic energy solid particles have, the more they ___________
  7. 15. Smallest unit of matter
  8. 18. Can be compressed and can take the shape of a container
  9. 19. A substance made from one type of atom
  10. 20. Mass per unit volume
  11. 21. Gas becomes a liquid
Down
  1. 1. The rows in the periodic table
  2. 2. Makes a ringing sound when hit
  3. 3. Breaks easily when a force is applied
  4. 6. More than one atom chemically bonded together
  5. 8. Cannot be compressed and has a fixed shape
  6. 9. Can be hammered into thin sheets
  7. 11. When a liquid becomes a gas
  8. 13. Can take the shape of a container but cannot be compressed
  9. 16. Subatomic particle with a positive charge
  10. 17. The mass of a neutron