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Eleventh Grade (Grade 11) Lab Practices and Tools Questions

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Grade 11 Lab Practices and Tools
What is the most important thing to do before starting a lab?
  1. Put on goggles.
  2. Pick up your materials from the lab cart.
  3. Read the entire lab.
  4. Put on your lab apron.
Grade 11 Lab Practices and Tools
When working in the laboratory setting, the abbreviation STP refers to                                         .
  1. an additive for oil and other lubricants
  2. starting time and position
  3. standard temperature and pressure
  4. standard testing protocol
Grade 11 Lab Practices and Tools
A balance is used to determine                .
  1. volume
  2. weight
  3. area
  4. mass
Grade 11 Lab Practices and Tools
The best footwear to wear in the laboratory is                          .
  1. closed-toed shoes
  2. open-toed shoes
  3. weather-appropriate shoes
  4. sandals
Grade 11 Lab Practices and Tools
The fire blanket is used to put out fires
  1. on the lab table.
  2. on people.
  3. on the floor.
  4. none of the above
Grade 11 Lab Practices and Tools
What is the function of the coarse adjustment knob on the light microscope?
  1. to make the image clearer
  2. to control the amount of light
  3. to move the stage up and down
  4. to hold the slide in place
Grade 11 Lab Practices and Tools
What is the function of the diaphragm of the light microscope?
  1. to move the stage up and down
  2. to adjust the amount of light
  3. to make the image clearer
  4. to increase the magnification
Grade 11 Lab Practices and Tools
Personal eyeglasses provide as much protection as                              .
  1. a face shield
  2. safety glasses
  3. splash-proof chemical goggles
  4. none of the above
Grade 11 Lab Practices and Tools
When you complete your lab work, which activity should you NOT do?
  1. Clean and return materials to proper places.
  2. Try your own experiment.
  3. Return to your own seat.
  4. Turn in your lab work.
Grade 11 Lab Practices and Tools
Flammable materials, like alcohol, should never be dispensed or used near                .
  1. an open door
  2. an open flame
  3. another student
  4. a sink
Grade 11 Lab Practices and Tools
You have heated a piece of glass and now you want to pick it up. You should
  1. use a rag or paper towels.
  2. pick up the end that looks cooler.
  3. use tongs.
  4. put cold water on it.
Grade 11 Lab Practices and Tools
How do you know how many places to write a number when measuring?
  1. Use only certain numbers from marks on the instrument.
  2. Use the marks on the instrument only.
  3. Always use three digits.
  4. Read the marks on the instrument plus one estimated number.
Grade 11 Lab Practices and Tools
Which procedure is not acceptable?
  1. pouring acid into water
  2. pipetting by mouth
  3. keeping flammables away from open flames
  4. not using chipped glass
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