Lab Safety & Equipment Quiz

What do you use to make sure the Triple Beam Balance is perfectly at ZERO when nothing is on the plate?

• Tare Button

• Zero Adjustment Knob

• Zero Buttom

• Tare Adjustment Knob

In which order should you move the slide weights on a Triple-Beam Balance when measuring mass?

• From largest to smallest

• From smallest to largest

• In whatever order you like

• Middle first, then largest, then smallest

What button should you press on a digital scale to set the readout back to ZERO?

• Zero Button

• Zero Adjustment Knob

• Tare Button

• Tare Adjustment Knob

What units do the digital scale and Triple-Beam Balance use to measure mass?

• mg

• kg

• g

• cg

What should you do with the tray when you are done measuring a substance on the digital scale?

• Leave it on top of the digital scale

• Put it back in the scale's box

• Nothing; leave it for the instructor to clean up

• Rinse it clean and dry it off

What is the top level of a liquid called?

• Menagerie

• Surface Tension

• Meniscus

• Milliliter

Which of the following correctly describes how to measure liquid in a beaker or graduated cylinder?

• Leave the cylinder/beaker on the tabletop and kneel so you are at eye level with the top of the liquid

• Hold the cylinder/beaker up to eye level so you can measure the liquid

• Tilt the cylinder/beaker away from you so you can read the units properly

• Place a ruler into the cylinder or beaker to measure the liquid level

Why should you *slide* an object down the side of a graduated cylinder to measure its volume?

• To avoid breaking the cylinder

• To avoid breaking the object

• To avoid splashing the liquid in the cylinder

• To avoid making noise

Which of the following should you ALWAYS be wearing when conducting an experiment?

• Gloves

• An Apron

• A Mask

• Goggles

Which of the following describes the proper way to move test tubes in the lab?

• Grasp the test tube firmly in one hand, and place the other hand beneath it

• Squeeze a pair of test tube holders around the middle of the test tube

• Squeeze a pair of test tube holders just under the rim of the test tube

• Don't move the test tubes; let the instructor do it