Physical Science

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Across
  1. 2. The small, dense, positively charged center of an atom
  2. 5. A common characteristic of physical changes.
  3. 6. Discovered the nucleus via the gold foil experiment.
  4. 7. A physical change, like what happens to ice.
  5. 8. Proposed that matter is made of "atomos."
  6. 10. Proposed that electrons move in fixed energy levels.
  7. 12. Regions where electrons move in modern atomic theory.
  8. 13. Particle responsible for chemical bonding.
  9. 14. Subatomic particle with no charge (0).
  10. 15. Proposed the first scientific atomic theory in 1803.
Down
  1. 1. Particles like protons, neutrons, and electrons.
  2. 3. A common characteristic of chemical changes.
  3. 4. Subatomic particle with a +1 charge.
  4. 9. Discovered the electron using cathode rays.
  5. 11. An example of a chemical change involving iron.