8. What types of products are made from gelatin? 9. What quality does acid add to foods?
10. What types of food products are made with vinegar?
11. Why should you never combine a strong acid and a strong base?
12. Explain how precious metals can be recycled with acid.
13. Briefly describe how acid etched parts are produced.
14. What types of organisms can live in highly acidic pools?
15. How might these types of organisms be useful?