1. Engineers try to use ____ materials like corn-based plastics to reduce environmental impact. 2. Coal is a ____ resource because one day it will run out. 3. A chemical ____ is used to speed up the reaction without being consumed. 4. Green chemistry tries to prevent ____ instead of cleaning it up later. 5. Many cleaning products are ____ and can damage both health and the environment. 6. In the lab, ethanol is often used as a ____ to dissolve other substances. 7. The ____ of a substance shows how harmful or poisonous it can be. 8. Remediation methods are used to ____ up contaminated soil. 9. During ____, multiple compounds are combined to create a new one. 10. Scientists now design materials that will naturally ____ after use. 11. A stoichiometric reagent is a chemical you need to use in large amounts for one reaction, and you can’t reuse it. 12. Petrochemicals are a common ____ in traditional industrial processes.

GREEN CHEMISTRY

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