Chemistry

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Across
  1. 2. the smallest part of an element/building block
  2. 3. positively charged part of an atom
  3. 5. is a pure substance that is mad of the same atom
  4. 8. Has definite shape and volume
  5. 9. neutral part o an atom
Down
  1. 1. tells us the mass of the protons and neutrons
  2. 2. tells us the number of protons
  3. 4. negatively charged part of an atom
  4. 6. has definite volume but no definite shape
  5. 7. has no definite shape or volume