Question

19 wearing sandals is appropriate attire for a science lab. a true b false 20 which of the following are good safety procedures for a science lab? a wear gloves when using chemicals or solutions b eat a snack while working in the science lab c use matches to light items that will burn d wear goggles when working on an experiment e listen to directions before beginning an experiment

Explanation:

Question 19:

In a science lab, sandals expose the feet and are not appropriate as there may be spills, broken glass, or other hazards. So wearing sandals is inappropriate.

• Option A: Wearing gloves with chemicals/solutions protects hands from harm, good safety.
• Option B: Eating in a lab can contaminate samples or cause ingestion of harmful substances, bad safety.
• Option C: Using matches to light flammable items is dangerous (fire risk), bad safety.
• Option D: Goggles protect eyes from splashes/particles during experiments, good safety.
• Option E: Listening to directions ensures proper procedure and safety, good safety.

So the good safety procedures are A, D, E.

Answer:

B. False

Question 20: