Lab safety worksheet featuring cartoon illustrations of students in a laboratory setting, highlighting unsafe activities and correct procedures, with questions to promote understanding of safety protocols.

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 girl with long hair is not tying her hair back. This is unsafe because loose hair can catch fire or get tangled in equipment. She should tie her hair back to keep it away from flames and chemicals.
- b. The boy is holding a syringe near his face, which is unsafe as it could accidentally inject him with a substance. He should hold the syringe away from his body and use proper technique when handling it.

#### Panel 2:
2. How should Rick correct his technique?
- Rick is pouring liquid into a beaker without using a funnel, which increases the risk of spilling. He should use a funnel to pour liquids into narrow-mouthed containers to prevent spills.

3. Are these students behaving appropriately? If not, what should they be doing differently?
- No, the students are not behaving appropriately. They are playing with lab equipment (e.g., spraying each other with liquid) instead of focusing on their experiments. They should be using the equipment for its intended purpose and following safety protocols.

#### Panel 3:
4. Compare Evelyn’s technique with Kwan’s technique.
- Evelyn is using a Bunsen burner correctly by holding the test tube at an angle and keeping her hand away from the flame. Kwan is holding the test tube vertically, which is incorrect because it can cause the liquid to splash out and burn her hand.

5. Whose technique is the correct one? Why?
- Evelyn’s technique is correct. Holding the test tube at an angle prevents the liquid from splashing out when heated, reducing the risk of burns and accidents.

#### 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 the workspace and lead to accidents if spilled.
- b. Non-lab-related items like toys or personal belongings should not be present, as they can distract students and create hazards.

7. What unsafe activity is shown in this picture?
- The students are running and playing with lab equipment, which is extremely unsafe. Running in a lab can lead to collisions, spills, and injuries.

8. What will happen to the students who are doing the unsafe activity?
- The students could get injured (e.g., tripping and falling, spilling chemicals, or breaking glassware). Their actions also put others in danger and disrupt the learning environment.

#### Panel 5:
9. Describe Jarvis’ error.
- Jarvis is cleaning the floor with a mop while wearing open-toed shoes. This is unsafe because mops can splash water, and open-toed shoes do not provide protection against chemical spills or broken glass.

10. Who in this scenario is performing a correct procedure? What is the correct procedure?
- Penny is performing a correct procedure by using a pipette to transfer liquid carefully. The correct procedure involves using appropriate tools for specific tasks and handling chemicals with precision.

11. What is Penny doing wrong?
- Penny is talking on her phone while working in the lab. This is distracting and unsafe because she may not be paying full attention to her work, increasing the risk of accidents.

#### Panel 6:
12. What is wrong with Ernie’s behavior?
- Ernie is throwing paper towels around, which is unsafe because it creates clutter and increases the risk of slips, trips, and falls. Paper towels should be disposed of properly in designated waste bins.

13. Why is Lydia’s behavior appropriate? Why is it important in a laboratory setting?
- Lydia is wearing gloves and handling glassware carefully. This is appropriate because gloves protect her hands from chemicals and sharp objects. It is important in a laboratory setting to minimize the risk of injury and contamination.

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Final Answer:

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