Question

1. pick up the end that looks cooler. c. use tongs. d. pour cold water on it.
2. you have been injured in the laboratory (cut, burn, etc.). first you should a. visit the school nurse after class. b. see a doctor after school. c. tell the science instructor at once. d. apply first aid yourself.
3. when gathering glassware and equipment for an experiment, you should a. read all directions carefully to know what equipment is necessary. b. examine all glassware to check for chips or cracks. c. clean any glassware that appears dirty. d. all of the above.
4. personal eyeglasses provide as much protection as a. a face shield. b. safety glasses. c. splash proof chemical goggles. d. none of the above.

Explanation:

1. In case of a laboratory - injury, the first step is to inform the science instructor immediately for proper guidance and assistance.
2. When preparing for an experiment, carefully reading directions, checking glassware for damage, and cleaning dirty glassware are all necessary steps.
3. Personal eyeglasses do not offer the same level of protection as a face shield, safety glasses, or splash - proof chemical goggles.

Answer:

1. C. tell the science instructor at once.
2. D. all of the above.
3. D. none of the above.