Laboratory Safety Flashcards
Work with large or small containers?
Small.
When can you mix chemicals?
When your teacher tells you to.
How many times should you read chemical labels?
More than once.
What should you do with instructions before you begin?
Read through them all the way.
When should you use a tray?
Whenever your lab has one.
How should you move when handling chemicals?
Carefully and deliberately.
Do you add acid to water or water to acid?
Add concentrated sulfuric or phosphoric acid to water.
Where should you hold coin-top stoppers while pouring?
Between your fingers.
Where should you hold bottles?
With your hand over the labels.
How fast do you replace stoppers?
Immediately.
Where should you work with harmful volatile chemicals?
Under a hood.
How should you keep chemicals?
Pure and uncontaminated.
Who should you notify to clean up spills?
Your teacher.
Where should you put waste.
In the proper container.
Where should you heat volatile organics? Where should you not.
In a heating mantle or steam bath in a hood. Not over a Bunsen Burner.
What should you check for on the gas hose for before use?
Cracks.
Make sure the hose fits securely on the __
Gas valve and Bunsen burner fittings.
Where should you stand from the burner while lighting?
Stand back.
Should you turn on the gas before or after lighting a match?
After.
What do you do if the flame sputters, flares, or goes out, or if you smell gas?
Turn off the gas.
What should you always check glassware for?
Stars or cracks.
Where should you clamp narrow-necked containers to?
The ring stand.
How should you move test tubes back and forth through a flame while heating?
At and angle.
Should you heat closed containers?
No.
Where should you hold hot glassware?
In beaker tongs or hot mitts.
Should you shake thermometers?
No.
Use thermometers only in the __ they are suited for.
Range.
How should you cool down a thermometer.
Lay down on a towel or wire screen away from edges of desks.
Who should clean up broken thermometers?
Your teacher.
What should you use to place glass tubing in a stopper or remove it?
An inserter or lubricate the tubing and wear leather gloves to protect your hands.
What kind of clothing should you not wear for a lab?
Extremely loose clothing.
What kind of clothing should you wear for a lab?
Sturdy and natural fabric. Older cloves covered with a lab apron. Long pants/skirt to cover legs.
What kind of shoes should you wear for a lab?
Closed leather shoes.
What should people with long hair do for a lab?
Tie up their long hair.
What jewelry should be removed before a lab?
Rings and watches?
What should you do with contact lenses during a lab?
Take them out.
How should you protect your eyes during a lab?
Wear goggles with side shields.
How should you protect your hands?
Wear appropriate gloves.
Where should your personal belongings not be.
In the aisle.
What should you use to help reach something?
A step stool.
Where should makeup be kept?
Away.
Are food and drinks allowed in the lab?
No.
Where should you rinse chemicals from your hands and arms?
In the sink.
What should you do before entering the safety shower?
Take off your clothes.
How should you extinguish small fires?
Use a fire blanket to cover them.
Who should use an extinguisher to put out large fires?
The teacher.
Where should you put out clothing fires.
In the safety shower. (If not available - use fire blanket)
