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Ninth Grade (Grade 9) Lab Practices and Tools Questions

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Grade 9 Lab Practices and Tools
What is the most likely outcome if this warning sign is ignored?
Hazard Sign - Radioactive
  1. A person may damage their skin.
  2. A person may damage their eyes.
  3. A person may electrocute themselves.
  4. A person may develop cancer.
Grade 9 Lab Practices and Tools
Where should you dispose of waste solids?
  1. regular dustbin
  2. sink, being careful to rinse the sink thoroughly
  3. correct bin or bowl, as directed by the teacher
Grade 9 Lab Practices and Tools
For which type of lab activity would this warning sign be most prominent?
Hazard Sign - Sharp Instrument
  1. dissecting a fetal pig
  2. testing the law of gravity
  3. experimenting with a new medicine
  4. mixing several different chemicals
Grade 9 Lab Practices and Tools
If glass is broken, you should
  1. pick it up.
  2. tell the teacher.
  3. leave it.
Grade 9 Lab Practices and Tools
A hygrometer measures air pressure.
  1. True
  2. False
Grade 9 Lab Practices and Tools
A(n)                   is used when a chemical splash or gas fume has reached the eyes.
  1. eye wash station
  2. fire blanket
  3. fire extinguisher
  4. first aid kit
Grade 9 Lab Practices and Tools
A student observes a paramecium under the low-power objective of a microscope (100x) and then under high power (400x). The image of the paramecium under low power compared to the image of the same paramecium under high power would be
  1. smaller and in a darker field of view.
  2. smaller and in a brighter field of view.
  3. larger and in a darker field of view.
  4. larger and in a brighter field of view.
Grade 9 Lab Practices and Tools
A barometer measures humidity.
  1. True
  2. False
Grade 9 Lab Practices and Tools
How would 50 mL of water most likely be measured?
  1. using a graduated cylinder
  2. using a scale
  3. using a thermometer
  4. using a calculator
Grade 9 Lab Practices and Tools
Galen invented the compound microscope.
  1. True
  2. False
Grade 9 Lab Practices and Tools
The items shown would be most useful for
Lab Tool - Round Bottom Flasks
  1. boiling liquids.
  2. storing liquid chemicals.
  3. measuring liquid volume.
  4. transferring liquids between containers.
Grade 9 Lab Practices and Tools
When working with hot plates or Bunsen burners you should                                                                                          . (Select all that apply.)
  1. not touch the hot plate until it looks cool.
  2. know the correct way to light and operate a burner.
  3. wear long-sleeve clothing such as a thick sweater, to protect your arms.
  4. tie your hair back.
  5. make sure the area around it is clear so nothing catches on fire if you need to leave it.
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