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WorksheetsRules of the laboratory
Total questions: 69
Worksheet time: 6hrs 45mins
Long hair must not be tied up, especially in the area of an open flame.
True
False
Always report any accident to your teacher.
True
False
It is good to eat and drink in the laboratory.
True
False
Always follow the laboratory safety rules.
True
False
It is okay to drink water from a beaker if it looks clean.
True
False
It is okay to taste a chemical if you know what it is.
True
False
Use safety goggles to protect your eyes.
True
False
Only report major injuries to your teacher.
True
False
Always wash your hands with soap and water after you have completed the experiment.
True
False
Always walk in the laboratory and don’t run.
True
False
Safety goggles should be worn during the laboratory experiments to…
improve vision
protect your face
protect contact lenses
protect eyes
all of the above
When performing a laboratory assignment…
read procedure beforehand to understand what to do
follow the teacher’s instructions
look out not only for your safety but also that of partners
none of the first three answers
all of the first three answers
When working with equipment that requires electricity…
keep electrical cords untangled and fully plugged in
check for updates to your safety contract
stretch the cord to the furthest outlet
use batteries instead
no special precautions are necessary
If a chemical gets in your eyes…
immediately wipe the chemical off your eyes
immediately use the eyewash station
place eye drops from the instructor in your eyes
inform the instructor before taking other action
all of these are appropriate
While working in the lab, a chemical spills on your hand. The first thing you should do is…
wipe the chemical off with a paper towel
immediately dip you hands in water
clean up your mess before taking other action
clean up as the teacher said
have your friend tell the teacher
When diluting acid to water, always pour…
water and acids should NOT be mixed
acid into water, stirring slowly
water into acid, stirring slowly
acid into water, stirring quickly
water into acid, stirring quickly
When inserting glass tubing into a rubber stopper
use a twisting motion
apply a lubricant
avoid forcing the glass tubing
use caution
all of these
When your laboratory experiment requires you to use a flame as a heat source…
be sure to use an apron to protect clothing
be sure to tie back any loose hair
both of the answers above
never use open flames
never use a hot plate
When working with projectiles or spinning objects, you should use …
goggles
an apron
goggles OR an apron
goggles AND an apron
no safety equipment needed
If you injure yourself by accidentally cutting or piercing your skin…
begin administering first aid
scream like a baby to warn others
stay where you are and
have your partner notify the instructor
notify the instructor yourself
check for any updates to your safety rules
If you have a spill (but not on yourself) that involves broken glass…
begin cleaning up the spill as instructed
scream like a baby to warn others
stand over spill, partner notifies instructor
notify the instructor yourself
check for any updates to your safety rules
If you are instructed to detect the odor of a chemical…
pour some chemical into a beaker and smell the beaker
smell near the bottle, but not too close
use a wafting motion
any of the above are acceptable
NONE, you should never smell chemicals
In the event of Eye Safety, people with glasses must still use goggles.
True
False
Students may wear open-toed shoes, but only if they also wear pants.
True
False
All chemicals spills must first be cleaned with water.
True
False
Students may pour chemicals down the drain, but ONLY with the instructor’s permission.
True
False
Flammable liquids may be heated with either a burner or hot plate.
True
False
Responsible laboratory procedures include humane treatment of biological specimens and cleaning up laboratory stations at the conclusion of experiments.
True
False
Students must return all equipment to their original location,
but they must also avoid returning chemicals to stock containers.
True
False
When students are finished with an experiment, they should remove protective equipment before they clean their station.
True
False
What safety symbol is this?
Explosion
Flammable
No Open Flame
Oxidizing Agent
What symbol is this?
Explosive Material
Hot surface
Sharp Object
Cold Hazard
What symbol is this?
Cold Hazard
Biohazard
Radiation Hazard
Laser Hazard
What symbol is this?
Strong Magnetic Field
Lizard
Hazard
Hot Surface
I may get the science supplies I need for an experiment.
whenever I want
when I think it is safe
when the supplies are out and ready to use
when the teacher gives me permission
When you finish working with chemicals, biological specimens, and other lab substances, always
treat your hands with skin lotion.
wipe your hands on a towel.
wipe your hands on your clothes.
wash your hands thoroughly with soap and water
4. Why are safety symbols important?
They tell me how to do an experiment
Because the icon looks cool
Symbols tell me the content of the substances
They tell me specific dangers
The wearing of flip flops and other open toed shoes are acceptable during a laboratory investigation during the hot summer months.
True
False
Which of the following should NOT be worn during a lab investigation?
Flip flops
Dangling jewelry
Loose, long hair
All of the above
Long hair in the laboratory must be
cut short.
tied back or kept entirely out of the way with a hair band, hairpins, or other confining device.
always neatly groomed.
held away from the experiment with one hand.
It is okay to drink water from a beaker if it looks clean.
True
False
Only report major injuries to your teacher.
True
False
Which picture represent eye safety?
Which of the following hazard symbols means flammable?
A
B
C
D
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
When pouring concentrated acid from a reagent bottle into a test-tube, which of the following is the best method of holding the bottle?
Holding the base of the bottle
Holding the bottle where its label is
Holding the bottle by its neck
Holding the bottle with both hands
A student working in a laboratory accidentally spilled concentrated hydrochloric acid on his hand. The most practical thing to do is __________.
To go to the hospital immediately
To rub the hand with a wet towel
To rub the hand with a dry towel
To wash the hand quickly under running water
Which of the following apparatus is the best one to use for measuring a fixed volume of liquid accurately?
Beaker
Cup
Gas jar
Pipette
If the air holes of a Bunsen burner are fully opened the flame will be __________.
Short, non-luminous and hot
Long, sooty and non-luminous
Short, luminous and hot
Short, sooty and hot
Mohammad uses a Bunsen burner. He closes the air-hole. The flame of the burner will be __________.
Colourless
Blue
Non-luminous
Luminous
Which of the following is the correct statement related to the Bunsen flame shown in the figure?
It is a non-luminous flame
Its temperature is low
It produces soot
The air hole is closed
Which of the following is the proper technique of lighting a Bunsen burner?
Close the air hole -> Turn the gas tap on -> Light the burner
Open the air hole -> Turn the gas tap on -> Light the burner
Turn the gas tap on -> Light the burner -> Close the air hole
Turn the gas tap on -> Open the air on -> Light the burner
Which of the following characteristics of a non-luminous flame?
It is blue and very hot
It is easy to see
It is sooty
It is yellow and easy to use
The diagram below show four positions of the eye when taking the reading of the volume of a liquid in a measuring cylinder. Which position of the eye would give an accurate volume?
A
B
C
D
The table below shows four thermometers with their range of temperature readings. Which of the thermometers is most suitable for measuring of a human being?
-10ºC to 110ºC
-30ºC to 70ºC
200ºC to 1700ºC
35ºC to 40ºC
Which of the following is the correct laboratory rule?
Handling test-tube using a test-tube holder when pouring chemical
Pouring excess chemical back into its container
Reading instruction carefully before doing any experiments
Reporting accident immediately to your friends
An __________ and a __________ are used to measure the diameter and mass of marble respectively
External caliper, beam balance
External caliper, spring balance
Internal caliper, beam balance
Internal caliper, spring balance
The reading on the stopwatch shown in figure below is __________?
1 hour and 57 minutes
57 seconds
57 minutes
57 hours
A plumber needs to measure the internal diameter of a water tap as accuracy as possible. Which instrument should be used?
Measuring tape
Micrometer
Metre rule
Vernier calipers
The diagram show four instruments for measuring length. Which one would be the best way to measure the thickness of a wire?
A
B
C
D
When lighting up a Bunsen burner, a student should:
Hold the lighted match near the air hole
Light up a match before turning on the gas
Turn off the gas before lighting up the match
Turn on the gas before lighting up the match
