Across
- 3. man made substances
- 5. substance considering of very large molecules
- 8. a substance reacts rapidly with oxygen and gives off heat
- 9. atmospheric emission purification
- 11. gases gases that trap heat in the atmosphere and warm the planet
- 12. acid+alkali-salt+water
- 15. a substance used to kill,repel pests
- 16. a reaction that gives off heat
Down
- 1. change long term shifts in temperatures and weather patterns
- 2. a substance made of 2 or more metals
- 4. a spray known as weedkiller
- 6. deposition any form of percipitation with acidic components
- 7. a reaction that absorbs heat
- 10. rust is an example of?
- 13. reaction reaction where a new substance is formed
- 14. workplace hazardous materials information system