Question

12 which of the following is a basic safety rule to follow in a science lab? a always wear safety goggles. b eat and drink in the lab. c ignore spills and accidents. d touch all chemicals to identify them. 13 what should you do immediately if a chemical spills on your skin during an experiment? a ignore it if it doesnt hurt. b tell the teacher immediately and rinse the area with plenty of water. c cover it with a bandage. d rub the area to increase absorption.

Explanation:

Question 12 (Which of the following is a basic safety rule to follow in a science lab?)

• Option A: Wearing safety goggles protects eyes from chemicals, broken glass, etc., a key lab safety rule.
• Option B: Eating/drinking in lab is prohibited (contamination, ingestion of chemicals).
• Option C: Ignoring spills/accidents is unsafe (can cause harm, spread hazards).
• Option D: Touching chemicals to identify them is dangerous (chemical burns, poisoning).

• Option A: Ignoring any chemical spill (even if not hurting) is unsafe (chemicals can damage skin over time).
• Option B: Telling the teacher and rinsing with plenty of water is correct (rinsing removes chemical, teacher can provide further help).
• Option C: Covering with a bandage without rinsing first traps the chemical, causing more harm.
• Option D: Rubbing the area increases chemical absorption and skin irritation.

Answer:

A. Always wear safety goggles.

Question 13 (What should you do immediately if a chemical spills on your skin during an experiment?)