science 7

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Across
  1. 5. 2 or more atom
  2. 7. what gives a positive charge
  3. 8. what topic did we just do
  4. 9. study of matter
  5. 10. what gives negative charge
  6. 12. what is all around use.
  7. 13. another word for rust
Down
  1. 1. something we drink
  2. 2. state of matter is
  3. 3. changing ex melting something
  4. 4. how tight material is holing the electrons
  5. 6. what am i the amount of space something occupies
  6. 10. made of one type of atom
  7. 11. more then one type of atom
  8. 14. what you breath