Unit 6B vocab

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Across
  1. 3. gases-group of chemical elements that have similar properties
  2. 5. electrons-electron the one outer shell of an atom
  3. 7. change-something you can physically change
  4. 8. A substance that undergoes a change during a reaction
Down
  1. 1. aftermath of chemical reaction
  2. 2. equation-symbolic representation of a chemical reaction
  3. 4. of conservation of mass-all transfers of matter in energy stay consistent
  4. 6. metals-a Coloum of elements that very reactive