Why do science classrooms use stools?

A Lab stool can be lightweight and easily moved to encourage multiple postures, and making it easier for school cleaning as the furniture is not too heavy to clear. Alternatively heavy duty lab stools witll prioritise sturdiness and stability.

Why are there no stools in a chemistry lab?

Chairs and stools are a trip hazard. Students should plan to be standing up throughout the lab session, allowing you to move quickly in the event of fire, an explosion, or some other chemical mishap occurring on the bench in front of you.

Why are cell phones not allowed in labs?

Dangers of fire or explosions The mobile battery has a low voltage and is not capable of igniting combustible vapours. However, keep in mind that the laboratory can use highly flammable solvents with low flashpoints so you should avoid use of mobile phones in the vicinity of such vapours.

Should lab windows be open?

B. Doors should open in the direction of egress. Laboratories should not have operable windows, particularly if there are chemical hoods or other local ventilation systems in the lab.

What should you wear in the lab?

Proper Laboratory Clothing Approved safety goggles. A shirt that covers the stomach and lower back as well as the upper arms. Long pants (An acceptable, but not reccommended, alternative is to wear shorts, a skirt, or a lab coat such that your knees are covered when you are sitting down.)

What is a phone used for in a science lab?

By allowing someone to use their mobile phone or tablet in a lab, this cancels out the need to print out resources and charts, eliminating the use of paper in the lab. This will also help to organize and clear up a scientists’ lab bench space, which can always be a safety hazard.

What should you do if there is a fire drill during a lab?

should always pull the fire alarm and call 911 to evacuate the building and bring the fire department. ➢ Keep areas around all types of heating equipment clear of combustibles at all times. While working in a lab you notice that smoke is coming from a fume hood across the room.

Is it okay to pick up broken glass with your bare hands?

It’s okay to pick up broken glass with your bare hands as long as the glass is placed in the trash.

Why should you tie your hair back in a lab?

For one, burning hair does not smell good. Secondly, burning hair can lead to severe skin burns. Note: If the lab does not include a fire component, it is still important to tie hair back. It’s not unheard of for students to accidently dip their hair into the chemicals with which they are working.

Why are mobile phones not allowed in labs?

Modern laboratory instruments are operated by electronic signal commands. In cases where the frequencies of signals correspond to the mobile phase electromagnetic signal, there can be interference which can lead to distortions. Mobile phones and other devices should not be used in the vicinity of such instruments.

Why can’t you clean up acid with water?

If you add water to acid, you form an extremely concentrated solution of acid initially and the solution may boil very violently, splashing concentrated acid. If you add acid to water, the solution that forms is very dilute and the small amount of heat released is not enough to vaporize and spatter it.