Across
- 2. Proposed the Atomic theory
- 4. Silicon and germanium find use in
- 5. An example of petrochemical is
- 8. The periodic law was formulated by
- 10. transmutation of metals to gold
- 11. used to sweeten food
- 12. An example of explosives is
Down
- 1. harmful effects of chemical products
- 3. wrote The Skeptical Chymist
- 6. Substance used to preserve food
- 7. polyester, nylon, terylene are these fibres
- 9. chemicals that provide nutrients to crops and increase their production
- 13. Named oxygen and hydrogen