chemistry

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Across
  1. 3. substances on the left side of a chemical reaction
  2. 5. has the same number of protons but different number of neutrons
  3. 6. a solid that forms from a solution during a chemical reaction
  4. 8. The smallest particle of an element is a
  5. 9. has a neutral charge
Down
  1. 1. has a negative charge
  2. 2. number in front of a chemical compound is called?
  3. 4. reaction a change in matter that produces a new substance
  4. 6. has a positive charge
  5. 7. melting example of physical change