Title: Ch. 8.1.1 quiz
Course: Lab Safety > Section: Day 5

Adapted from Introduction to Handling Chemical Wastes from Laboratory Safety by Hill and Finster, 2010 by Wiley

Q: True or False: Up until the 1970s, chemical waste disposal in the United States largely involved direct discharge into the environment.
- True
- False
A: True

Q: True or False: In the 21st century in the United States, most chemical waste cannot be disposed of directly into the environment.
- True
- False
A: True

Q: True or False:  In the 21st century most waste disposal outside the United States and Western Europe involve direct discharge into the environment.
- True
- False
A: True

Q: The best rule for disposal of waste from a chemistry lab is
- Down the sink unless instructed otherwise
- Into trash cans unless instructed otherwise
- Into chemical waste receptables unless instructed otherwise
- None of the above
A: Into chemical waste receptables unless instructed otherwise

Q: Learning to properly dispose of even very small amounts of chemicals in academic lab experiments is important because
- If hundreds of students all disposed of small amounts, the total would be large and significant
- Sometimes even small amounts of chemicals down the sink can be a hazard
- This practice teaches students the appropriate method of disposal
- All of the above
A: All of the above

Q: With regard to the disposal of chemcial wastes, the EPA assumes that
- All chemicals are hazardous to the environment
- Chemicals are hazardous unless they are know to be nonhazardous
- Chemicals are nonhazardous unless they are known to be hazardous
- Chemicals in small quantities are neccassarily not very hazardous, so waste disposal lefislation only applies to large quantities of chemicals
A: All chemicals are hazardous to the environment

Q: Apart from environmental concerns, why is it unwise to dispose of chemicals down the sink?
- Solids that are insoluble in water will remain in the sink trap and perhaps react with subsequent chemicals poured down the sink
- Some chemicals can produce toxic gases when mixed with other chemicals in the sink trap
- Some chemcials may react unexpectedly with other chemcials in the trap
- All of the above
A: All of the above

Q: Unidentified wastes from chemistry labs
- Are generally the cheapest to dispose of since they are always burned
- Are generally the cheapest to dispose of since they are always buried
- Are generally expensive to dispose of because they are assumed to be dangerous mixtures
- Are generally expensive to dispose of because they must be treated as if they are bery hazardous
A: Are generally expensive to dispose of because they must be treated as if they are bery hazardous

Q: If you inadvertently dispose of a chemical into the incorrect waste container, you should
- Make a note of this in your lab notebook
- Tell your instructor before the end of the laboratory session
- Tell your instructor immediately
- Write an email to your instructor so that there is a lefal statement about the event
A: Tell your instructor immediately

Q: Broken glass that is contaminated with chemicals
- Should be washed thoroughly before disposal in the broken glass container
- Should be handled by your instructor or someone with training about how to handle this situation
- Can be placed in a trash receptable
- Should be placed in your lab drawer until the chemical self-decontaminated and then it can be placed in the broken glass container
A: Should be handled by your instructor or someone with training about how to handle this situation