7th Grade Chemistry

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Across
  1. 2. a chemical change that happens when certain metals react with O2
  2. 4. the smallest unit that makes up all matter
  3. 6. the name of the element with the symbol Cl
  4. 7. a physical property that shows shininess
  5. 8. anything with mass and volume that takes up space
  6. 14. negatively charged particles in an atom
  7. 16. a chemical property that can be shown by running a pH test
  8. 17. made when two or more different elements are chemically bonded
  9. 18. the formula to find this physical property is d=m/v
Down
  1. 1. positively charged particles in an atom
  2. 3. the name of the element with the symbol Na
  3. 5. the name of the element with the symbol O
  4. 6. the name of the element with the symbol C
  5. 9. a new solid formed during a chemical reaction
  6. 10. a physical property that turns water into ice
  7. 11. the name of the element with the symbol H
  8. 12. properties that can be observed using the 5 senses
  9. 13. particles in an atom with no positive or negative charge
  10. 15. properties that are only observed in a chemical reaction