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WorksheetsBiochem lab exers
Total questions: 61
Worksheet time: 40mins
It is used to heat samples in the lab. Some applications include maintaining cell lines or heating flammable chemicals that might combust if exposed to open flame.
Iron stand
funnel
water trough
water bath
It is the ideal stopper used in test tubes and flasks.
water bath
clay triangle
cork
screw
It is also used in some instances to clamp a couple of support rods together, or to clamp an iron ring or other attachment to a metal bar.
iron stand
meter stick
wire gauze
burette
Used to hold crucibles
crucible holder
test tube holder
crucible tong
pipettes
Used to heat liquids for evaporation.
mortar and pestle
glass watch
evaporating dish
funnel
It is used for containing water when collecting gases
test tube holder
water through
Erlenmeyer flask
beakers
It is used to measure masses very precisely
weighing scale
burette
dropper
beam balance
It is used to support a container, such as a beaker, on a ring stand while it is being heated. May have a fiberglass or ceramic center.
wire gauze
stirring rod
beam balance
ring stand
It is used to measure length in the Metric System.
meter stick
compass
protractor
graduated cylinder
Are containers made of glass, plastic, borosilicate or related substances, and topped by special caps or stoppers and are intended to contain chemicals in liquid or powder form for laboratories and stored in cabinets or on shelves.
bottle reagents
test tube racks
volumetric flask
florence flask
How does a lab coat protects its wearer?
What do you have to do, if you get a chemical spill into your eye?
Name the two most important emergency response equipment inside a chemical laboratory.
Learning to be safe in chemistry laboratories is best accomplished by ____________________
Performing experiments to see what's safe and what isn't.
Memorizing Safety rules
Thinking about the hazards and the risks associated with the experiments
Learning from one's own mistakes
Tasting chemicals ____________________
Is allowed for solutions that are very dilute.
Is never allowed in chemistry labs.
Is allowed for lab chemicals that we know are "common chemicals" (such as Vitamin C) .
Is allowed for chemicals that are known to be non toxic.
Which is not a component of student safety ethic?
Work Safely
Avoid unnecessary risk
Accept responsibility for safety
Rely on your teacher to keep you safe
Which statement is true?
All chemicals are hazardous
Only chemicals that are toxic are considered hazardous
Only chemicals in open beakers are hazardous.
Only liquids and gaseous chemicals are hazardous.
What is the very first thing you do once you receive any laboratory equipment?
Start Measuring out chemicals
inspect for cracks or damages
Organize/ Sort your equipment
Wash/Disinfect
Name the equipment.
beaker
erlenmeyer flask
watch glass
petri dishe
Name the equipment
Name the equipment
A coaster
A wire gauze
A place mat
A heatprof mat
Name the equipment
Beaker
Erlenmeyer flask
Florence flask
Volumetric flask
Name the equipment
utility clamp
iron ring
clay triangle
test tube clamp
Name the equipment
Name the equipment
watch glass
evaporating dish
forceps
mortar
Which of these is used to make & contain a precise volume of a solution?
Which of these is used to transfer a small piece of magnesium into a test tube?
What piece of equipment is used to store test tubes properly instead of rolling off the lab table?
Name a proper uses for this piece of equipment.
Measuring precise and accurate volume amounts
Weiging out solute
To hold the contents of a neutralization reaction during a titration
Identifying Mass
We use a thermometer to measure temperature in ...
degrees Celsius
degrees Fahrenheit
millimeters
degrees Kelvin
Which laboratory apparatus would you use to measure 75mL of water accurately?
(Select all that apply.) What is wrong in the picture?
I. Smelling a chemical directly
II. Wearing open toed shoes.
III. Wearing ear buds during lab.
IV. Using hands to pick up broken glass.
I
II
III
IV
Nothing is wrong.
What are these?
(a)
Name the use of the given picture.
for holding small samples
for the measurement of an amount of a liquid
used to pick up or hold small objects
Name the use of the given picture.
used for transferring liquid from one container to another
used for heating chemicals
used to contain solutions
Name the use of the give picture.
used for the measurement of an amount of a liquid
mainly used to store and mix solutions
used for transferring liquids from one container to another
Name the use of the given picture.
useful to hold larger items.
used for holding test tube when it should not be touched
used to pick up or hold small objects
Name the picture.
forceps
test tube holder clamo
tongs
Identify the laboratory apparatus given.
Burette
Pipette
Spring balance
Triple Beam balance
Identify the laboratory apparatus given.
Erlenmeyer flask
Graduated cylinder
Triple Beam Balance
Volumetric flask
Identify the laboratory apparatus given.
Beaker
Burette
Pipette
Florence flask
Identify the laboratory apparatus given.
Erlenmeyer flask
Florence flask
Volumetric flask
Spring balance
It is also used in some instances to clamp a couple of support rods together, or to clamp an iron ring or other attachment to a metal bar.
iron stand
meter stick
wire gauze
burette
Used to heat liquids for evaporation.
mortar and pestle
glass watch
evaporating dish
funnel
It is used to support a container, such as a beaker, on a ring stand while it is being heated. May have a fiberglass or ceramic center.
wire gauze
stirring rod
beam balance
ring stand
Which laboratory apparatus is a syringe?
The laboratory apparatus above is used to measure ______________ .
mass
length
volume
temperature
The apparatus used for heating very small quantity of chemicals.
Beaker
Flask
Test tube
Gas jar
Mention the material from which this apparatus is made and its use.
Plastic and for crushing solids
Steel and for mixing chemicals
Porcelain and for crushing and grinding solids
Glass and for mixing chemicals
The following are some safety rules in a laboratory. Which one is not correct?
Do not eat or drink in the laboratory
Do not report any injury, however small, to the teacher
Do not taste chemicals in the laboratory
Do not run in the laboratory
Which of the following is the correct laboratory rule?
Eating in the laboratory while doing practical during lunch time
Running in the laboratory when he is in a hurry
Poking the electrical power points with sharp objects
Using the apparatus in the laboratory only when told to do the science teacher
Ali would like to heat a test-tube containing chemical X over a Bunsen burner. How should Ali carry put the heating?
Holding the test tube with his bare hands
Holding the test tube with a piece of cloth
Holding the test tube using a test tube holder
Holding the test tube with tongs
