Across
- 2. The study of chemical reactions
- 4. An element required for Energy Production
- 6. a compound or substance that has been purified or prepared
- 8. a thing that is composed of two or more separate elements; a mixture
- 10. identifyed by atomic number
Down
- 1. a Scale that test for acidic levels
- 3. bleach
- 5. having a pH below 7
- 7. A bond where electrons are shared
- 9. substance that has a PH higher than 7