Matter and Chemical Change Topics 1-3

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Across
  1. 4. this model is also called the planetary model
  2. 5. there are 118 of them and they are pure substances; cannot be broken down into smaller substances
  3. 6. a type of physical property that describes a substance; no numbers associated with it
  4. 9. a type of physical property that is measure
  5. 11. a type of mixture that I can easily tell the difference between particles
  6. 12. a type of mixture where I cannot tell the difference between the particles
  7. 13. neutrally charged particles that are found in the nucleus
Down
  1. 1. a type of change that is not easily reversed
  2. 2. a type of change that is easily reversible
  3. 3. positively charged particles that are found in the nucleus
  4. 5. negatively charged particles that orbit the nucleus of an atom
  5. 7. this model is also called the plum pudding model
  6. 8. this model is also called the nuclear model
  7. 10. a chemical bond between 2 or more elements