Podcast
Questions and Answers
You should leave the thermometer in the heated chemical while measuring temperature.
You should leave the thermometer in the heated chemical while measuring temperature.
False
Which of the following tools are suitable for measuring volume? (Select all that apply)
Which of the following tools are suitable for measuring volume? (Select all that apply)
What should you do if you contact chemicals?
What should you do if you contact chemicals?
Rinse your skin and eyes with plenty of water for at least 15 minutes.
What immediate action should be taken for acid spills on the skin?
What immediate action should be taken for acid spills on the skin?
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What should you do first in case of a fire?
What should you do first in case of a fire?
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For chemical burns, rinse the affected area with plenty of water and apply clean, cold ______ until the pain decreases.
For chemical burns, rinse the affected area with plenty of water and apply clean, cold ______ until the pain decreases.
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Which of the following statements is true regarding volume measurement with graduated cylinders?
Which of the following statements is true regarding volume measurement with graduated cylinders?
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What is the purpose of a fire blanket?
What is the purpose of a fire blanket?
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Study Notes
Using Measuring Instruments Safely
- Prevent chemical spills on balances during weighing.
- Keep thermometers from direct contact with chemicals during temperature measurement.
- Use appropriate tools for accurate volume measurement: droppers, pipettes, and graduated cylinders.
- Avoid using beakers for precise volume measurements.
- Ensure stable positioning and eye-level reading when measuring volume with a graduated cylinder.
Handling Accidents
- Flush skin and eyes with copious amounts of water (at least 15 minutes) following chemical contact, provide first aid, ensure a readily available first-aid kit.
- For acid skin contact, rinse thoroughly with water, then apply a weak base solution.
- For chemical burns, initial rinsing with water is crucial, followed by application of cool water or ice until pain subsides, then implement appropriate first aid.
- In case of fire, immediately alert authorities; if a person is on fire, use a fire blanket to extinguish flames by cutting off air supply.
Figures
- Figure 1.10 illustrates various measurement devices.
- Figure 1.11 shows a first-aid kit.
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Description
This quiz covers essential safety practices while using various measuring instruments in a laboratory setting. It emphasizes the importance of preventing chemical spills, proper handling of thermometers, and best practices for measuring liquids. Additionally, it addresses emergency procedures for chemical accidents and burns.
