Question

part 1: multiple choice: circle the letter of the correct answer. 1. which item should you always wear to protect your eyes in the lab? a) sunglasses b) safety goggles c) reading glasses d) face mask 2. if you spill a chemical on your skin, the first thing you should do is: a) run away b) tell the teacher immediately c) wipe it with your shirt d) ignore it 3. which of the following is not safe in the lab? a) tying back long hair b) eating food during an experiment c) wearing closed - toe shoes d) using equipment carefully 4. fire extinguishers are used for: a) cleaning glassware b) putting out small fires c) washing hands d) heating liquids 5. if glassware breaks, you should: a) pick it up with your hands b) leave it on the floor c) tell the teacher and use a broom/dustpan d) step over it carefully

Explanation:

1. Safety goggles are standard eye - protection in labs. Sunglasses are for sun protection, reading glasses for vision correction, and face masks don't protect eyes.
2. Telling the teacher immediately is the proper response when spilling a chemical on skin. Running away, wiping with a shirt, or ignoring it can cause more harm.
3. Eating food during an experiment is not safe as chemicals can contaminate the food. Tying back long hair, wearing closed - toe shoes, and using equipment carefully are safe practices.
4. Fire extinguishers are used to put out small fires. They are not for cleaning glassware, washing hands, or heating liquids.
5. If glassware breaks, telling the teacher and using a broom/dustpan is the correct action. Picking it up with hands is dangerous, leaving it on the floor is a tripping hazard, and stepping over it is also risky.

Answer:

1. b) Safety goggles
2. b) Tell the teacher immediately
3. b) Eating food during an experiment
4. b) Putting out small fires
5. c) Tell the teacher and use a broom/dustpan