Chemistry

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Across
  1. 4. radiant energy given of by the sun
  2. 6. member of the family of elements composed of very reactive, colored, non-metals
  3. 8. a substance that has a PH level higher than 7 when it's in aqueous solution
  4. 9. a subatomic particle that has a negative charge (-1)
  5. 10. starting substance in a chemical reaction
Down
  1. 1. a compound made from carbon and hydrogen
  2. 2. a subatomic particle that has a positive charge (+1)
  3. 3. a group of atoms usually of different elements that act as one single ion
  4. 5. a substance that has a PH level lower than 7 when it's in aqueous solution
  5. 7. a substance that can't be broken down into any simpler substances by chemical means