Question

how should students prepare to use chemicals in the lab? select one or more: check labels and discard chemicals that are not 100% pure. become familiar with the chemicals to be used, including exposure or spill hazards. locate the spill kits and understand how they are used. sort the lab chemicals in alphabetical order for quick access.

Explanation:

• "Check labels and discard chemicals that are not 100% pure" is incorrect because many lab chemicals don't need to be 100% pure, and discarding them is unnecessary and wasteful.
• "Become familiar with the chemicals to be used, including exposure or spill hazards" is correct. Knowing the hazards of chemicals is essential for safe lab work.
• "Locate the spill kits and understand how they are used" is correct. In case of a chemical spill, knowing where spill kits are and how to use them is crucial for safety.
• "Sort the lab chemicals in alphabetical order for quick access" is incorrect. Lab chemicals are typically stored according to safety and compatibility guidelines, not alphabetical order.

Answer:

B. Become familiar with the chemicals to be used, including exposure or spill hazards.
C. Locate the spill kits and understand how they are used.