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WorksheetsSafety Procedures (Mult. Choice & True and False)
Total questions: 35
Worksheet time: 18mins
Which of the following statements is incorrect concerning the transfer of chemicals?
You should always read the label on the reagent bottle.
You should always wear goggles in the laboratory.
You should never touch chemicals directly with your hands.
You should always return unused chemicals to their original containers.
Which of the following is an appropriate technique to use when pouring liquids?
Remove the stopper of the container and lay the stopper on a clean area of the workbench.
Look down into the graduated cylinder to better determine when the correct volume has been reached.
Pour the liquid slowly down a glass stirring rod into a beaker.
Grasp the container you are pouring from by its base.
If a laboratory fire erupts while using the Bunsen burner, immediately
Run for the fire extinguisher
Open the windows
Turn off the gas valve
Throw water on the fire
Which of the following errors is most likely to cause you to start a filtration over again?
Overflowing the top edge of the filter paper
Failure to use a stirring rod
Using too large a piece of filter paper
Placing the tip of the funnel in the center of the beaker
Which of the following descriptions of gas burner flame color, air vent status, and degree of air mixing are realistic?
Yellow flame, open air vents, good mixing of air
Blue flame, closed air vents, poor mixing of air
Yellow flame, closed air vents, poor mixing of air
Blue flame, open air vents, good mixing of air
Flammable materials, like alcohol, should never be dispensed or used near
An open door
An open flame
Another student
A sink
Which of the following types of flame is probably the best for most laboratory work?
A 2-inch-wide yellow flame
A light red, cone-shaped flame
A flame with an inner light blue cone and an outer blue margin
A flame that flickers in the breeze
You are heating a substance in a test tube. Always point the open end of the tube
Toward yourself
Toward your lab partner
Toward your teacher
Away from all people
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.
Which of the following is an appropriate procedure to follow when using a balance?
Move the balance freely around the laboratory.
Be especially careful when measuring an object that exceeds the balance capacity
Place solid chemicals directly on the pan
Remember to zero the balance
How should the volume of a liquid in a graduated cylinder be read?
Look at the number that is the largest near the water line, that’s the volume.
Get eye level with the graduated cylinder sitting on the lab bench and read the bottom of the curve
Hold the graduated cylinder in your hand and look at the liquid, guess where it’s closest to
Look down the top of the graduated cylinder
If you wear contact lenses in the school laboratory,
Take them out before starting the lab unless you have permission to wear them with goggles.
You do not have to wear safety goggles.
Take them out if you get chemicals in your eye.
Keep the information to yourself.
When you finish working with chemicals and other lab substances, always
Treat your hands with skin lotion.
Wash your hands thoroughly with soap and water.
Wipe your hands on a towel.
Wipe your hands on your clothes.
If you do not understand a direction or part of a lab procedure, you should
Figure it out as you do the lab
Try several methods until something works
Ask the instructor before proceeding
Skip it and go on to the next part
After completing an experiment, all chemical wastes should be
Left at your lab station for the next class
Disposed of according to your teacher’s directions
Dumped in the sink
Taken home
If a lab experiment is not completed, you should,
Discuss the issue with your teacher
Sneak in after school and work alone
Come in during lunch and finish while eating lunch
Make up some results
You are heating a piece of glassware (beaker) and now want to pick it up. You should
Use a rag or paper towels
Pick up the end that looks cooler
Use tongs
Pour cold water on it
If an acid is splashed on your skin, wash at once with
Wipe it off with only a paper towel
Oil
Weak base
Plenty of water
You have been injured in the laboratory (cut, burn, etc.). First you should
Visit the school nurse after class.
Stick your injury in your mouth.
Tell the science teacher.
Apply first aid yourself
Long hair in the laboratory must be
Cut short
Held away from the experiment with one hand
Always neatly groomed
Tied back
The following footwear is "best" in the laboratory.
sandals
open-toed shoes
closed-toed shoes
shoes appropriate for the weather
If a piece of equipment is NOT working properly, stop, turn it off, and tell
the custodian
your lab partner
your best friend in the class
the science instructor
Hot glass looks the same as cold glass.
True
False
All chemicals in the lab are to be considered dangerous.
True
False
Return all unused chemicals to their original containers.
True
False
Work areas should be kept clean and tidy.
True
False
Pipets are used to measure and dispense small amounts of liquid. You should draw the liquid into the pipet using your mouth.
True
False
Laboratory work can be started immediately upon entering the laboratory even if the teacher is not yet present.
True
False
Never remove chemicals or other equipment from the laboratory.
True
Flase
Chipped or cracked glassware is okay to use.
True
False
Read all procedures thoroughly before entering the laboratory.
True
False
All unauthorized experiments are prohibited (not allowed).
True
False
You are allowed to enter the chemical preparation/storage area any time you need to get an item.
True
False
Laboratory aprons should be worn during all lab activities.
True
False
Never leave a lit burner unattended.
True
False
