Question

classify the following descriptions as safe behavior in a science lab or as unsafe behavior in a science lab.
safe behavior in a science lab

• hands are thoroughly dried before touching an electrical outlet or appliance.
• sharp objects are handled with care and always pointed away from people.

unsafe behavior in a science lab

• when diluting acids, you dont need to wear safety glasses.
• when you heat a test tube, you should point it away from you and towards your lab partner.
• it is okay to heat items and chemicals in a closed container.

Explanation:

To solve this, we analyze each statement based on lab safety principles:

Safe Behavior in a Science Lab:

• Hands are thoroughly dried before touching an electrical outlet or appliance: Water conducts electricity, so drying hands prevents electric shock. This is safe.
• Sharp objects are handled with care and always pointed away from people: Pointing sharp objects away from others prevents accidental injuries. This is safe.

Unsafe Behavior in a Science Lab:

• When diluting acids, you don’t need to wear safety glasses: Acids can splash and damage eyes; safety glasses are required. This is unsafe.
• When you heat a test tube, you should point it away from you and towards your lab partner: Heating can cause chemicals to splash—pointing at a partner risks injuring them. This is unsafe.
• It is okay to heat items and chemicals in a closed container: Heating a closed container can cause pressure buildup and explosions. This is unsafe.

Final Classification (matching the given boxes):

• Safe Behavior in a Science Lab:
• Hands are thoroughly dried before touching an electrical outlet or appliance.
• Sharp objects are handled with care and always pointed away from people.

• Unsafe Behavior in a Science Lab:
• When diluting acids, you don’t need to wear safety glasses.
• When you heat a test tube, you should point it away from you and towards your lab partner.
• It is okay to heat items and chemicals in a closed container.

(If the task was to confirm the pre-selected safe behaviors: The two selected statements ("Hands are thoroughly dried...", "Sharp objects are handled...") are correctly categorized as safe lab behaviors.)

Answer:

To solve this, we analyze each statement based on lab safety principles:

Safe Behavior in a Science Lab:

• Hands are thoroughly dried before touching an electrical outlet or appliance: Water conducts electricity, so drying hands prevents electric shock. This is safe.
• Sharp objects are handled with care and always pointed away from people: Pointing sharp objects away from others prevents accidental injuries. This is safe.

Unsafe Behavior in a Science Lab:

• When diluting acids, you don’t need to wear safety glasses: Acids can splash and damage eyes; safety glasses are required. This is unsafe.
• When you heat a test tube, you should point it away from you and towards your lab partner: Heating can cause chemicals to splash—pointing at a partner risks injuring them. This is unsafe.
• It is okay to heat items and chemicals in a closed container: Heating a closed container can cause pressure buildup and explosions. This is unsafe.

Final Classification (matching the given boxes):

• Safe Behavior in a Science Lab:
• Hands are thoroughly dried before touching an electrical outlet or appliance.
• Sharp objects are handled with care and always pointed away from people.

• Unsafe Behavior in a Science Lab:
• When diluting acids, you don’t need to wear safety glasses.
• When you heat a test tube, you should point it away from you and towards your lab partner.
• It is okay to heat items and chemicals in a closed container.

(If the task was to confirm the pre-selected safe behaviors: The two selected statements ("Hands are thoroughly dried...", "Sharp objects are handled...") are correctly categorized as safe lab behaviors.)