Safety Quiz-Lab chem
What is often used to absorb spills?
- Cat litter
How should test tubes be heated on bunsen burner?
- Hold at angle - move back and forth
Why should you clean your hand after a lab?
- chemicals could damage skin - chemicals could contaminate food
What type of clothes should be worn in the lab?
- close fitting - long pants - long sleeves - no jewelrey - tied hair - gloves - goggles with side shield
______ containers should not be heated
- damaged - closed
When should you turn off the bunsen burner?
- if flame sputter - if you smell gas - if flame randomly goes out - when you are done using it
How should chemicals be handled?
- keep away from face - don't taste - don't smell directly
What should you do before mixing chemicals?
- read instructions - read labels - get teachers permission
What should happen when you spill something?
-report immediately - stay away from spill
What does AA stand for?
Add Acid
What lets oxygen into the bunsen burner?
Air holes
What should be used for picking up hot beakers?
Beaker tongs
What should be held between fingers when pouring ?
Cointop stoppers should be held between fingers when pouring
When diluting an acid, always add ____ to _____
acid to water
Move test tubes back and forth at an _____ while heating
angle
Strike matches ____ ____ your body
away from
Hold hot glasseware with ______ _______ or ______
beaker tongues or gloves
Use a ____ or ________ to draw liquid into a pipette.
bulb, pipetter
Glassware should be kept ____
clean
Extinguish small fires in containers by ________ them
covering
Rinse chemicals from your eyes in an _______ ________
eyewash fountain
What should not be heated on the Bunsen Burner?
flammable chemicals
Work with volatile chemicals under a ____ ____
fume hood
When inserting lubricated glass tubing into a stopper, protect your hands with _______ ______
leather gloves
Gas valve should be ____-
open
What should be done with thermometers when done using them?
place on towel or wire screen away from edge of table
What is the proper technique for pouring acid?
poured from graduated cylinder/beaker onto stirring rod.
What does a bunsen burner do?
produces open gas flame
chemicals should be kept _____
pure
Read and _________ a chemical label before using the chemical
reread
Always protect your eyes with ______ _______ when working in the laboratory
safety goggles
Put out clothing fires in a ______ ______
safety shower
You should not ____ thermometers
shake
Glass containers with narrow tope should be ______ before heating?
stabilized
Stand on a ____ _____ if you need to reach
step stool
____ ____ clothing on the way to the safety shower
take off
Pour chemicals from large reagent bottles into ________ _____________ before measuring
Small Containers
Balance a centrifuge by placing test tubes containing equal masses opposite each other
TRUE
Check glassware for stars and cracks
TRUE
Hold bottles with your hand over the label while pouring
TRUE
If you dont have an inserter, lubricate glass tubing before inserting it through a stopper
TRUE
Immediately wipe up any spills
TRUE
Remove rings and watches before working in the laboratory
TRUE
Wear closed leather shoes to protect your feet
TRUE
What should be used for harmful chemicals ?
The fume hood.
What should be checked before using a bunsen burner?
The rubber hose, replace if damaged
What is the hottest part of the flame?
Tip of inner core
Where should waste be disposed of?
In the proper container
What temperature is suited for alcohol and mercury thermometers?
120 C - -20 C
How long should eyes be rinsed?
15 minutes
How long should you take a shower of you spill chemicals on yourself?
15 minutes
Carefully scoop up mercury from a broken thermometer with a piece of paper
FALSE
Shake laboratory thermometers down before use
FALSE
When lighting a Bunsen burner, first turn on the gas, then strike the match
FALSE
