Across
- 1. air, sulphur and water.
- 5. preserve food and drinks, serves as antioxidant.
- 7. thick liquid
- 8. sulphur added to tyres to make it harder.
- 10. an absorber.
- 11. SO2 prepared by burning sulfur in excess air.
- 12. chemical formula for sulfuric acid.
Down
- 2. sulfur dioxide to sulfur trioxide.
- 3. environmental consequence of sulfuric acid in rivers and lakes.
- 4. key raw material in the sulphuric acid production.
- 6. bright yellow substance used in fertilizers and pesticides.
- 9. environmental consequence of sulfur dioxide and sulfur trioxide escaping into the atmosphere.