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 the body and never point it towards anyone, including yourself.

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 to each other, 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 using a pipette correctly by keeping her hand steady and avoiding contact with the liquid.
- Kwan is holding the pipette incorrectly, with his fingers too close to the tip, which could contaminate the sample.
5. Whose technique is the correct one? Why?
- Evelyn’s technique is correct because she is holding the pipette properly, ensuring that the sample remains uncontaminated and reducing the risk of spillage.

#### Panel 4:
6. List two things that should NOT be in the lab.
- a. Food and drinks (e.g., the soda can) should not be in the lab because they can contaminate experiments and create hazards.
- b. Non-lab-related items like toys or personal belongings should not be present, as they can distract students and pose safety risks.
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 cause accidents or distract from proper lab procedures.
8. What will happen to the students who are doing the unsafe activity?
- The students could get injured if the toy gun accidentally hits someone or causes a distraction leading to an accident. Additionally, they may face disciplinary action for violating lab safety rules.

#### 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 surfaces. Additionally, he is not using the appropriate cleaning solution for laboratory environments.
10. Who in this scenario is performing a correct procedure? What is the correct procedure?
- Penny is performing a correct procedure by using a dustpan and brush to clean up small spills on the floor. This is the appropriate method for cleaning solid debris in a lab setting.
11. What is Penny doing wrong?
- Penny is drinking from a glass while cleaning, which is unsafe because it could lead to contamination of the drink or accidental ingestion of harmful substances.

#### 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 fold them neatly or use a designated waste container to avoid creating a mess or potential fire hazard.
13. Why is Lydia’s behavior appropriate? Why is it important in a laboratory setting?
- Lydia is using a spray bottle to clean surfaces, which is appropriate because it ensures that all surfaces are sanitized effectively. This is important in a laboratory setting to maintain cleanliness and prevent cross-contamination of samples and equipment.

---

Final Answer:

\boxed{
\text{See detailed explanations above for each question.}
}