Chemistry

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Across
  1. 2. member of the family of elements composed of very reactive, colored, non-metals
  2. 4. a subatomic particle that has a positive charge (+1)
  3. 5. starting substance in a chemical reaction
  4. 6. a group of atoms usually of different elements that act as one single ion
  5. 8. a subatomic particle that has a negative charge (-1)
Down
  1. 1. a substance that has a PH level higher than 7 when it's in aqueous solution
  2. 2. a compound made from carbon and hydrogen
  3. 3. radiant energy given of by the sun
  4. 7. a substance that has a PH level lower than 7 when it's in aqueous solution