Flashcards on Essential Laboratory Safety and Ethics

Essential Laboratory Safety and Ethics for Students

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What clothing and protective equipment should you wear in the lab during experiments?

Sensible clothing (no open shoes), a lab coat, and depending on the experiment safety goggles and gloves.

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Laboratory Safety and Ethics

15 cards

Question: What clothing and protective equipment should you wear in the lab during experiments?

Answer: Sensible clothing (no open shoes), a lab coat, and depending on the experiment safety goggles and gloves.

Question: Give two general lab safety practices to prevent accidents.

Answer: Keep flammable items away from lit Bunsen burners and avoid directly touching hot equipment; handle glassware carefully to prevent breakage.

Question: What should you always do when following instructions in the lab?

Answer: Follow teacher instructions carefully.

Question: Why must you be cautious when using chemicals?

Answer: They may be hazardous—flammable, or able to irritate or burn the skin on contact.

Question: When should you use a fume hood?

Answer: When an experiment might produce harmful or nasty gases (e.g., chlorine) to prevent gas escaping into the room.

Question: What practices should you follow to avoid touching chemicals directly?

Answer: Never touch chemicals directly—even with gloves; use a spatula for solids and a funnel for pouring liquids to avoid spillages.

Question: What is the correct order when diluting a concentrated liquid?

Answer: Add the concentrated substance to the water, not the other way around, to avoid the mixture getting very hot.

Question: How can you stop masses and equipment from falling during experiments?

Answer: Use clamp stands and sensible-weight masses and appropriate-length pulleys.

Question: What precautions should you take when heating materials?

Answer: Let heated materials cool before moving them or wear insulated gloves; if using an immersion heater, let it dry in air first.

Question: List three laser safety rules.

Answer: Always wear laser safety goggles, never look directly into the laser or aim it at someone, and turn the laser off when not needed.

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