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WorksheetsCLEAPSS - Science Practical Safety Quiz
Total questions: 62
Worksheet time: 31mins
1. Culturing microorganisms above 30°C or in completely sealed containers is not recommended because:
It can encourage the growth of harmful pathogens or prevent oxygen supply needed for aerobic organisms.
It increases the rate of photosynthesis in microorganisms.
It improves the yield of beneficial bacteria.
It ensures complete sterilization of the culture.
2. It is better to use dilute solutions of enzymes in practicals rather than solid samples because:
dilute solutions allow for better control of reaction rates
solid samples are always more expensive
dilute solutions are harder to measure accurately
solid samples do not contain active enzymes
The difference between ‘eye protection / safety specs’ and ‘goggles’ is:
Safety specs protect against impact, while goggles provide a seal against liquids and dust.
Goggles are only for swimming, while safety specs are for laboratories.
Safety specs are always tinted, while goggles are always clear.
Goggles are lighter than safety specs.
Eating and drinking is illegal / banned in all Science laboratories because:
it can lead to accidental ingestion of hazardous chemicals.
it helps students focus better on experiments.
it keeps the laboratory clean and tidy.
it prevents food from spoiling in the lab.
Before working with naked flames, we should do the following with long hair and our clothes:
Tie back long hair and secure loose clothing
Leave hair and clothes as they are
Wear extra layers of loose clothing
Use hair products to protect hair
It is safer to be standing up when we work with hazardous substances or when heating things because:
it allows you to move away quickly in case of an accident.
it helps you see better.
it makes the experiment faster.
it keeps the substances cooler.
After working with chemicals, microbes, animal or plant material, we should:
Wash our hands thoroughly.
Eat food immediately.
Touch our face before cleaning up.
Ignore safety procedures.
If we burn our skin or splash chemical on our skin, we should:
immediately wash the area with plenty of water
cover the area and wait for it to heal
apply oil or lotion to the affected area
ignore it if it does not hurt much
If we cause a small spill during practical work, we should:
Clean it up immediately and inform the teacher.
Ignore it and continue working.
Wait for someone else to notice and clean it.
Cover it with paper and leave it.
If we cause a big spill during practical work, we should:
inform the teacher immediately
ignore it and continue working
try to clean it up without telling anyone
leave the area and hope someone else notices
Safe use of human body fluids and tissues in experiments involves:
Following proper safety protocols and guidelines
Ignoring safety procedures
Using any available materials without precautions
Handling samples without protective equipment
The steps we should take before using mains powered equipment in practical work include:
Checking for damaged cables and plugs
Turning the equipment on immediately
Ignoring safety instructions
Using the equipment with wet hands
The general rule about what concentration of a substance to use in a practical is:
Use the lowest concentration that will still give a measurable result.
Always use the highest concentration available.
Use a random concentration each time.
Use the same concentration as in previous experiments, regardless of the aim.
The general rule about the amount of a substance to use in a practical is:
Use the smallest amount necessary to achieve the result
Use as much as possible for accuracy
Always use a fixed amount regardless of the experiment
Use double the recommended amount for safety
We safely smell chemicals by:
Waving your hand over the container to waft the smell toward your nose
Placing your nose directly over the container and inhaling deeply
Shaking the container and then smelling it closely
Opening the container and taking a big sniff
Gloves should be worn during practical work when:
handling hazardous chemicals or materials.
writing notes in your notebook.
listening to instructions from the teacher.
observing a demonstration from a distance.
The safe way to view a very bright light is:
By using protective eyewear
By looking directly at it
By squinting your eyes
By covering one eye
If we feel unwell during a practical, we should:
Inform the teacher immediately.
Continue working without telling anyone.
Leave the classroom without permission.
Ignore the symptoms and finish the task.
We should never remove chemicals or apparatus from a Science laboratory because:
it can be dangerous and cause accidents.
it helps us finish experiments faster.
it makes the laboratory look cleaner.
it is allowed if we are careful.
Select the correct statement about the difference between ‘hazard’, ‘harm’ and ‘risk’.
A hazard is a potential source of harm, harm is the injury or damage caused, and risk is the likelihood of harm occurring.
A hazard is the likelihood of harm, harm is the potential source, and risk is the injury caused.
A hazard and risk mean the same thing, while harm is unrelated.
Harm is the potential source, hazard is the injury, and risk is the certainty of harm.
A control measure is:
an action taken to eliminate or reduce a hazard
a type of hazard in the workplace
a method for increasing risk
an equipment used for entertainment
A risk assessment is:
an evaluation of potential hazards and the likelihood of their occurrence
a financial audit of company expenses
a review of employee performance
a summary of completed projects
Control measures to use when handling sharps include:
Using puncture-resistant containers for disposal
Leaving sharps on work surfaces
Passing sharps directly from hand to hand
Recapping needles by hand
The difference between these two symbols is:
They represent different mathematical operations.
They are used in the same context.
They have the same meaning.
They are both used for addition.
25. This symbol indicates:
No U-turn
No parking
No entry
No stopping
26. This symbol indicates which of the following?
No U-turn
No Parking
No Entry
Speed Limit
27. These symbols represent which of the following?
Recycling and environmental safety
Electrical hazard and flammable material
Radioactive and biohazardous material
Corrosive and toxic substances
The difference between blue and red circular safety signs is:
Blue signs indicate mandatory actions, while red signs indicate prohibitions.
Blue signs indicate warnings, while red signs indicate safe conditions.
Blue signs indicate fire equipment, while red signs indicate information.
Blue signs indicate emergency exits, while red signs indicate directions.
29. The yellow flame is used when we aren’t using a lit Bunsen burner because:
it is easily visible and indicates the burner is on but not in use
it produces the hottest flame for heating
it is used for sterilizing equipment
it is used to save gas
When we are heating a material in a test/boiling tube, the tube should be pointed away from people because:
it prevents injury in case of splashing or sudden boiling
it helps the material heat faster
it keeps the tube cleaner
it makes the experiment more accurate
A safe way of heating flammable liquids is:
Using a water bath instead of an open flame
Heating directly over an open flame
Placing the container on a hot plate without supervision
Using a Bunsen burner
Why shouldn’t we culture microorganisms above 30°C / in completely sealed containers?
Higher temperatures and anaerobic conditions can encourage the growth of pathogens.
Microorganisms grow faster at lower temperatures.
Sealed containers increase oxygen levels, which kills microorganisms.
Culturing at high temperatures prevents any microbial growth.
Why is it better to use dilute solutions of enzymes in practicals rather than solid samples?
Enzymes can trigger allergic reactions in some people or cause them to become sensitised. Using dilute solutions minimises the risk.
Dilute solutions of enzymes are always more effective than solid samples in all reactions.
Solid samples of enzymes are more expensive than dilute solutions.
Dilute solutions of enzymes change color, making them easier to observe.
What is the difference between ‘eye protection’ and ‘goggles’?
Eye protection is required to reduce risk due to impact (e.g. when using projectiles) or chemical splash causing eye irritation. (Splash-proof) goggles are required if eye damage may occur due to chemical splash.
Eye protection and goggles are exactly the same and can be used interchangeably in all situations.
Goggles are only used for fashion purposes, while eye protection is for laboratory work.
Eye protection is only for sunlight, while goggles are for swimming.
Why is eating and drinking illegal/banned in all Science laboratories?
To minimise the risk of ingesting a hazardous substance. It is legal requirement under COSHH regulations to not ‘Eat, Drink, Smoke or Apply Make-Up in Lab’.
Because it is considered disrespectful to the laboratory equipment.
To prevent food and drink from being stolen by others.
Because it is believed to interfere with scientific results.
What should we do with long hair and our clothes before working with naked flames?
Tie back or tuck in anything that could drop into the flame, e.g. ties, hair, baggy clothing etc.
Leave them loose to allow for better movement.
Spray them with water to prevent burning.
Wear a hat to cover your hair but leave clothes as they are.
Why is it safer to be standing up when we work with hazardous substances or when heating things?
So that we can quickly move out of the way if we need to.
Because it helps us see better.
Because it makes the experiment faster.
Because it keeps the substances cooler.
What should we do after working with chemicals, microbes, animal or plant material?
Wash our hands carefully.
Eat food immediately.
Touch our face and eyes.
Skip washing and leave the lab.
What should we do if we burn our skin or splash chemical on our skin?
Wash the affected part with lots of water and let a teacher know straight away.
Cover the area with a cloth and wait for the pain to subside.
Ignore it and continue working as normal.
Apply ice directly to the burn and do not tell anyone.
What should we do if we cause a small spill during practical work?
Wipe up the spill and tell the teacher. If you don’t know how to safely deal with the spill, tell your teacher.
Ignore the spill and continue working.
Cover the spill with paper and leave it.
Ask a friend to clean it up for you.
What should we do if we cause a big spill during practical work?
Tell your teacher straight away. Some chemicals spill may require additional treatment prior to disposal.
Ignore it and continue working.
Try to clean it up without telling anyone.
Wait until the end of class to report it.
How do we safely use human body fluids and tissues in experiments?
Only handle samples from our own body. Dispose of samples in disinfectant after use or collect for autoclaving if blood is used.
Use any available samples without precautions. Dispose of samples in regular trash.
Handle samples with bare hands and store them at room temperature.
Mix samples with other chemicals before disposal.
What steps should we take before using mains powered equipment in practical work?
Visually check the equipment for damage – report problems to a teacher. Keep water away from the equipment.
Plug in the equipment before checking for damage.
Use the equipment near water to test its safety.
Ignore any visible damage and proceed with the experiment.
What is the general rule about what concentration of a substance to use in a practical?
Use the lowest concentration possible to allow us to get the results we need.
Use the highest concentration possible for faster results.
Always use a medium concentration for safety.
Use any concentration as long as it is available.
What is the general rule about the amount of a substance to use in a practical?
Use the smallest amount (mass / volume) possible to get the results we need.
Use as much as possible to ensure a strong reaction.
Always use a fixed amount regardless of the experiment.
Use the largest amount available to speed up the process.
How do we safely smell chemicals?
Gently waft the air above the container towards our nose. Do NOT breath in directly above the container.
Place your nose directly over the container and inhale deeply.
Shake the container and sniff the fumes quickly.
Open the container wide and take a big breath in.
When should we wear gloves during practical work?
Rarely. We may need gloves if using materials that can stain the skin, or that are very hazardous, or if we have broken skin.
Always, regardless of the materials being used.
Only when working with paper and pencils.
Never, gloves are not necessary in any practical work.
How can we safely view a very bright light?
Wear eye protection and using a passive welding filter lens (shade 9).
Look directly at the light with the naked eye.
Use sunglasses meant for outdoor use.
Cover one eye and squint at the light.
What should we do if we feel unwell during a practical?
Tell the teacher straight away or send someone to tell the teacher straight away.
Ignore it and continue with the practical.
Wait until the practical is over to say anything.
Leave the room without informing anyone.
Why should we never remove chemicals or apparatus from a science laboratory?
There is a high risk of me or others getting seriously harmed.
It helps to keep the laboratory clean.
It is a way to save money on equipment.
It makes experiments more interesting.
What is the difference between ‘hazard’, ‘harm’ and ‘risk’?
Hazard – anything that can cause harm. Harm – damage to a person or the environment. Risk – a combination of the severity of the harm and the likelihood of harm occurring.
Hazard – a type of risk. Harm – a way to prevent risk. Risk – a measure of safety.
Hazard – a positive outcome. Harm – a benefit to the environment. Risk – a guarantee of safety.
Hazard – a legal requirement. Harm – a financial loss. Risk – a certain event.
What is a control measure?
Safety precautions used to reduce the risk of harm.
A type of measurement tool used in laboratories.
A method for increasing production speed.
A device used to control temperature.
What is a risk assessment?
A process of judging how likely harm will occur during an activity and putting in control measures to minimise that harm.
A method for recording employee attendance.
A way to calculate company profits.
A checklist for daily office cleaning tasks.
What control measures should we use when using sharps?
Cut away from the body and use a cutting board/tray. Wearing eye protection if there is a risk of material flicking into someone’s eye. Collect the sharp from the teacher who is counting them out and in. Protect the blade or point when moving the sharp around the laboratory. Cover any wounds or breaks in my skin.
Use sharps without supervision and dispose of them in regular trash bins.
Share sharps between students without cleaning them.
Store sharps loosely in your backpack for easy access.
What is the difference between these two symbols?
1 – a flammable substance, ie one that will combust. 2 – an oxidising substance – ie one that will cause (or contribute) to combustion of other materials.
1 – a corrosive substance, ie one that will damage metals. 2 – a toxic substance – ie one that is harmful if inhaled.
1 – a radioactive substance, ie one that emits radiation. 2 – a biohazardous substance – ie one that poses a biological risk.
1 – an explosive substance, ie one that can detonate. 2 – a compressed gas – ie one that is stored under pressure.
What does this symbol mean?
A chemical that may irritate or harm the skin/eyes/respiration.
A chemical that is explosive.
A chemical that is radioactive.
A chemical that is highly flammable.
What does this symbol mean?
A corrosive substance that can cause severe skin or eye damage.
A flammable substance that can easily catch fire.
A radioactive material that emits harmful radiation.
A substance that is toxic if inhaled or swallowed.
What do these symbols mean?
Substances that are serious health hazards (1) or acutely toxic (2).
Substances that are environmentally friendly and biodegradable.
Substances that are safe for consumption and non-toxic.
Substances that are used for cleaning and disinfecting only.
What is the difference between blue and red circular safety signs?
Blue circular safety signs (1) show what you must do, and red ones (2) what you must not do.
Blue circular safety signs (1) indicate danger, and red ones (2) indicate safe areas.
Blue circular safety signs (1) are for emergency exits, and red ones (2) are for fire equipment.
Blue circular safety signs (1) show where to find information, and red ones (2) show where to find restrooms.
Why do we use the yellow flame when we aren’t using a lit Bunsen burner?
The flame is easy to see which minimising the risk of someone burning themselves in the flame.
It produces more heat for experiments.
It is used to sterilize equipment.
It is less safe than the blue flame.
When we are heating a material in a test/boiling tube, why should be point the tube away from people?
In case the material over-heats and is ejected from the tube.
To make the heating process faster.
To prevent the tube from breaking.
To ensure the tube remains clean.
Describe a safe way of heating flammable liquids.
Place the liquid in a boiling tube with anti-bumping granules. Place the tube in a beaker half-filled with freshly boiled water.
Heat the liquid directly over a Bunsen burner flame.
Place the liquid in a sealed container and heat it in an oven.
Use a spirit lamp to heat the liquid in an open beaker.
