Lab Safety.24

Long hair in the laboratory must be 

• tied back or kept entirely out of the way with a hair band, hairpins, or other confining device
• always neatly groomed
• held away from the experiment with one hand
• cut short

 If you do not understand a direction or part of a lab procedure, you should 

• skip it and go on to the next part.
• ask the instructor before proceeding
• try several methods until something works
• figure it out as you do the lab

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

When gathering glassware and equipment for an experiment, you should

•  All of the choices
• clean any glassware that appears dirty
• examine all glassware to check for chips or cracks
• read all directions carefully to know what equipment is necessary

In a laboratory, the following should not be worn. 

• all of the answers
• dangling jewelry
• sandals
• loose clothing

 The following footwear is best in the laboratory. 

• shoes appropriate for the weather
• open-toed shoes
• closed-toed shoes
• sandals

 Horseplay or practical jokes in the laboratory are 

• okay if you are working alone
• not dangerous
• okay
• always against the rules

When you finish working with chemicals, biological specimens, and other lab substances, always 

• wipe your hands on your clothes
• wipe your hands on a towel
• wash your hands thoroughly with soap and water
• treat your hands with skin lotion

Hot glass looks the same as cold glass.

• True
• False

Tags

NGSS.MS-PS1-4

All chemicals in the lab are to be considered dangerous

• True
• False

Tags

NGSS.HS-ETS1-3