Laboratory Safety

Which one of the following is a person that studies rocks?

• Biologist
• Chemist
  
• Geologist
  
• Astronomer

Which piece of laboratory equipment would be best for measuring out 6.5 mL of liquid?

• Measuring cylinder
• Beaker 
• Test tube 
• Conical flask

Which rule below would you NOT follow when using a Bunsen burner?

• Long hair must be tied back.
• Wear protective clothing and safety glasses.
• Place the Bunsen burner directly onto the unprotected bench.
• Keep the gas tap closed when attaching the rubber hose from the Bunsen burner.

When heating a test tube, it should be

• pointed away from yourself and other students
• held with two fingers
• filled completely with the liquid being heated
• heated over a tripod and gauze mat.

A measuring cylinder is a piece of equipment for:

• stirring mixtures
• heating substances
• measuring volumes of liquids
•  mixing and heating substances.

The curve surface of the water inside a measuring cylinder is known as

•  curvature
• meniscus
• open water
• surface tension

Which is NOT true about a Bunsen burner?

• The air hole must be closed when lighting a Bunsen burner.
• When not in use, the yellow safety flame of a Bunsen burner should be visible.
• The blue flame of Bunsen burner is cooler than the yellow flame.
• A Bunsen burner must always be placed on a heatproof mat.

Which of the following is NOT a rule in the laboratory?

• Follow the teacher’s instructions.
• Look directly into a test tube.
• Wear protective clothing.
• Wait until equipment is cool before putting it away.

Which piece of equipment can be used to mix substances whilst swirling it around?

• Beaker
• Test tube
• Stirring rod
• Conical flask

Into which section of a laboratory report should observations, tables and graphs go?

• Discussion
• Results
• Conclusion
• Aims