Lab Safety

Approved eye protection devices (such as goggles) are worn in the laboratory

• to avoid eye strain

• to improve your vision

• only if you don't have corrective glasses

• any time chemicals, heat or glassware are used

Is it permissible to have any drink or food in the lab?

• Yes

• Never!

• Water only

• Two of the choices are correct.

Which of the following statements is TRUE?

• Food and drink are allowed during lab.

• Taring a piece of weigh paper means setting it on the balance and zeroing the mass.

• When too much solid has been massed, the excess can be put back in the original container.

• When using a spectrophotometer, a blank cuvette is filled with the solutions ant set to 0 %.

When disposing of excess material, you should:

• Put it back in the stock bottle

• Properly dispose of the substance

• Combine with other chemicals for a surprise reaction

• Leave it on the counter top for others to clean up

Tags

NGSS.HS-LS2-7

Flammable materials, like alcohol, should never by dispensed or used near

• an open door

• an open flame

• another student

• a sink

You are heating a piece of glass and now you want to pick it up. You should

• pour cold water on it

• pick in up on the end that looks cooler

• use tongs

• use a graduated cylinder

Never leave a lit bunsen burner unattended.

• True

• False

Chipped or cracked glassware is okay to use.

• True

• False

What is used to measure the volume of liquids more precisely in milliliters?

• Beaker
• Flask
• Graduated Cylinder
• Test tubes

What is used to measure temperature?

• Triple Beam Balance

• Graduated Cylinder

• Stopwatch

• Thermometer

Tags

NGSS.MS-PS3-4