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, wearing sandals is inappropriate as they don't protect feet from spills, broken glass, or other hazards. So the statement is false.

• Option A: Wearing gloves with chemicals/solutions protects hands from harm, good safety.
• Option B: Eating in lab is unsafe (contamination, fire risk), bad.
• Option C: Using matches for burning items (e.g., Bunsen burners) is proper for ignition, good safety.
• Option D: Goggles protect eyes from splashes/fragments, good safety.
• Option E: Listening to directions ensures proper procedure, good safety.

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

Answer:

B. False

Question 20: