Lab Safety equipment and procedures

1.Which of the following is not an importance of knowing the location of safety equipment in the classroom?

• You should know the location in case your teacher gives you a test.

• You should know the location in case of a small fire.

• You should know the location in case of a large chemical spill on your clothing or body.

• You should know the location in case of a harmful substance getting into your eyes.

What would rulers, electronic scales, and beakers be useful for?

• Following all safety rules in the lab.

• Observing the chemical properties of substances.

• Measuring the mass, length, and volume of substances.

• Performing experiments in the lab.

3.How long should you flush your eyes at the eye wash station?

• 30 - 60 seconds

• 1 - 5 minutes

• 5 - 10 minutes

• 15 - 20 minutes

Which of the following is a way that lab tools help scientists?

• Lab tools help scientists measure substances.

• Lab tools help scientists observe substances.

• Lab tools help scientists interact with substances.

• All of the answers are correct.

During a lab investigation, a group of students needed to observe the surface of a rock more closely. Which of the following pieces of lab equipment would be most useful?

• graduated cylinder

• petri dish

• hand lens

• triple beam balance

Two students needed to transfer a small amount of liquid from a beaker into a test tube. Which of the following is the best way to accomplish this task?

• Use an eye dropper or pipette to carefully transfer the liquid.

• Use a small spoon or scoop to carefully transfer the liquid

• Slowly pour the liquid from the beaker into the test tube.

• Carefully dip the end of the test tube into the beaker to fill it with the necessary liquid.

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Ava and Olivia needed exactly 7 mL of water for the next step of their experiment. Which of the following pieces of lab equipment would be most useful?

• beaker

• graduated cylinder

• flask

• test tube

What is used to find the temperature of a substance?

• funnel

• thermometer

• dropper

• spring scale

What is used for guiding a liquid or powder into a small opening?

• funnel

• graduated cylinder

• flask

• petri dish

What is used to grow cultures of microorganisms?

• Microscope

• graduated cylinder

• thermometer

• petri dish