Across
- 3. workplace hazardous material information system
- 5. two or more substances react together
- 6. installed in smokestacks to remove sulfur
- 7. acid and base produce salt compound
- 8. man-made fibres (as cloth or thread)
- 10. substance or material has very large molecules
- 11. chemical reaction that absorbs heat
- 12. substances use chemicals to kill plants/animals
- 14. trap heat in earths atomsphere
- 15. acidic materials are deposited on earth
Down
- 1. chemical reaction that releases heat
- 2. chemical reaction combines with oxygen produce heat and light
- 4. changes in the climate
- 9. chemical that kills plants
- 13. chemically breaks down or degrades metal
- 15. two or more metals mixed together