Matter, Atoms, and Molecules

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Across
  1. 2. A substance made up of only one type of atom (Ex. Gold)
  2. 3. What happens when a gas becomes a liquid.
  3. 4. Particles inside the nucleus with no charge.
  4. 9. Water vapor rising from boiling water.
  5. 10. Particles with a negative charge outside the nucleus.
  6. 11. The center of an atom.
  7. 13. The number of protons and neutrons in an atom.
  8. 15. Milk is an example of this type of matter.
Down
  1. 1. Number of protons in the nucleus of an atom.
  2. 5. Anything that has mass and takes up space.
  3. 6. Particles inside the nucleus with a positive charge.
  4. 7. Oxygen is an example of this type of matter.
  5. 8. When atoms combine to make a new type of matter.
  6. 12. Your desk an example of this type of matter.
  7. 14. The smallest part of matter.