Chemistry Vocab

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Across
  1. 1. Atoms combined that are of two or more different elements
  2. 5. A particle in an atom's nucleus with negative electrical charge
  3. 7. The stuff that makes up matter
Down
  1. 2. When two or more atoms join together chemically
  2. 3. A particle in an atom's nucleus with neutral charge
  3. 4. A particle in an atom's nucleus with positive electrical charge
  4. 6. When all the atoms that make up a substance are the same kind
  5. 8. The stuff that makes up everything in the universe