Lab Safety Worksheet Worksheet - Free Printable

Lab Safety Worksheet Solutions

#### Panel 1:
1. List 2 unsafe activities in this picture and explain how they should be changed to make them safe.
- a. The student with long hair is not tying it back, which could catch fire or get tangled in equipment.
- Correction: Tie long hair back to prevent it from catching fire or getting tangled.
- b. The student is using a Bunsen burner without wearing safety goggles.
- Correction: Always wear safety goggles when working with open flames or chemicals to protect the eyes.

#### Panel 2:
2. How should Rick correct his technique?
- Rick is holding a test tube too close to his face while heating it, which is dangerous because hot liquids could splash.
- Correction: Hold the test tube at a slight angle away from your body and face to avoid burns if the liquid splashes.

3. Are these students behaving appropriately? If not, what should they be doing differently?
- No, the students are not behaving appropriately. They are standing too close together, which can lead to accidents if one of them spills a chemical or knocks over equipment.
- Correction: Students should maintain a safe distance from each other to avoid accidental spills or collisions.

#### Panel 3:
4. Compare Evelyn’s technique with Kwan’s technique.
- Evelyn is holding the pipette correctly, with her thumb on the bulb and fingers supporting the pipette, ensuring precise control.
- Kwan is holding the pipette incorrectly, with his thumb on the wrong side, which could cause inaccurate measurements.
- Correct Technique: Hold the pipette with the thumb on the bulb and fingers supporting the pipette for precision.

5. Whose technique is the correct one? Why?
- Evelyn’s technique is correct because she is holding the pipette properly, which ensures accurate measurements and reduces the risk of contamination.

#### Panel 4:
6. List two things that should NOT be in the lab.
- a. Food and drinks (e.g., soda) should not be in the lab because they can contaminate equipment and create hazards.
- b. Loose clothing (e.g., ties, scarves) should not be worn in the lab because they can catch fire or get tangled in equipment.

7. What unsafe activity is shown in this picture?
- The students are playing with a toy gun in the lab, which is extremely unsafe as it could distract others or cause accidents.

8. What will happen to the students who are doing the unsafe activity?
- The students could get injured if they accidentally hit someone with the toy gun or distract others who are working with hazardous materials.

#### Panel 5:
9. Describe Jarvis’ error.
- Jarvis is cleaning the floor with a mop while wearing gloves, which is incorrect because mops are not meant for cleaning laboratory floors. Laboratory floors should be cleaned with a damp cloth or a specialized cleaner.

10. Who in this scenario is performing a correct procedure? What is the correct procedure?
- Penny is performing a correct procedure by using a damp cloth to clean the countertop. This is appropriate for maintaining cleanliness in a laboratory setting.

11. What is Penny doing wrong?
- Penny is drinking from a glass while working in the lab, which is unsafe because it can lead to contamination of the drink or accidental ingestion of chemicals.

#### Panel 6:
12. What is wrong with Ernie’s behavior?
- Ernie is throwing paper towels into the trash can without disposing of them properly. He should ensure that all waste is disposed of in the appropriate containers to prevent contamination or fires.

13. Why is Lydia’s behavior appropriate? Why is it important in a laboratory setting?
- Lydia is wearing gloves while handling chemicals, which is appropriate because it protects her skin from exposure to hazardous substances.
- Importance: In a laboratory setting, wearing gloves is crucial to prevent chemical burns, infections, and cross-contamination.

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Final Answer:

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\text{See detailed explanations above.}
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