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Tenth Grade (Grade 10) Lab Practices and Tools Questions

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Grade 10 Lab Practices and Tools
A chemical that causes cancer is a(n)
  1. irritant.
  2. corrosive substance.
  3. carcinogen.
  4. poison.
Grade 10 Lab Practices and Tools
To dispose of chemicals,                                       .
  1. throw them in the trash
  2. follow the instructions of the teacher
  3. burn them in the burner
  4. flush them down the sink
Grade 10 Lab Practices and Tools
An instrument used to measure mass is a
  1. thermometer.
  2. graduated cylinder.
  3. ruler.
  4. balance.
Grade 10 Lab Practices and Tools
What is the safest practice when mixing water and an acid?
  1. Always pour the acid into the water.
  2. Mix the acid and water by swirling and shaking.
  3. Always pour the water into the acid.
  4. Mix the acid and water by using a gloved hand.
Grade 10 Lab Practices and Tools
If you get a chemical in your eyes, what should you do?
  1. Blink very fast.
  2. Flush your eyes in the eye wash for 15 to 20 minutes.
  3. Hold your eyes tightly shut.
  4. Rub your eyes to stimulate tearing.
Grade 10 Lab Practices and Tools
Any lab chemical may be flushed down the sink.
  1. The statement is correct.
  2. The statement is incorrect.
Grade 10 Lab Practices and Tools
Read and follow all directions very carefully.
  1. True
  2. False
Grade 10 Lab Practices and Tools
What do electron microscopes use to focus and magnify an image?
  1. glass lenses
  2. electron beams
  3. X rays
  4. light
Grade 10 Lab Practices and Tools
You have been injured in the laboratory with a cut or burn. First, you should
  1. visit the school nurse.
  2. tell the teacher.
  3. apply first aid yourself.
  4. scream loudly.
Grade 10 Lab Practices and Tools
Chemicals should be stored                                                    .
  1. according to their reactivity with other substances
  2. by alphabetical order
  3. in an off-site research facility
  4. in a dark room
Grade 10 Lab Practices and Tools
If glassware breaks, you should
  1. throw it in the sink.
  2. notify the teacher.
  3. dispose of it in the broken glass container.
  4. both b and c
Grade 10 Lab Practices and Tools
Always point a test tube that is being heated
  1. away from yourself and toward others.
  2. toward yourself and others.
  3. toward yourself and away from others.
  4. away from yourself and others.
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