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