Materials and Matter
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Properties of solids, liquids, and gases
SubtopicProperties of solids, liquids, and gases under Materials and Matter for Grade 3 IGCSE.
Preview questions (no answers)
- 1.
If you freeze liquid juice, what state of matter does it become?
A.Liquid
B.Solid
C.Gas
D.Air
- 2.
Which of these would you use to describe a gas?
A.Hard and heavy
B.Cold and solid
C.Fills the container it is in
D.Keeps its own shape
- 3.
What state of matter is a metal paperclip?
A.Gas
B.Solid
C.Liquid
D.Vapor
- 4.
Which state of matter is the syrup you put on pancakes?
A.Solid
B.Liquid
C.Gas
D.Invisible
- 5.
Which of these substances is a gas at room temperature?
A.Oxygen
B.Gold
C.Mercury
D.Salt
- 6.
If you heat a solid, what is usually the first change of state that occurs?
A.It turns into a gas
B.It turns into a liquid
C.It turns into a different solid
D.It disappears
- 7.
What is the boiling point of pure water at sea level?
A.B.C.D. - 8.
Why does liquid water eventually disappear if left in an open bowl in a warm room?
A.The water particles are destroyed by the heat
B.The water particles turn into gas and mix with the air
C.The bowl absorbs the water over time
D.The water turns into solid dust
- 9.
Which property is shared by both liquids and solids?
A.They both have a fixed shape
B.They both have a fixed volume
C.They can both be easily compressed
D.They both fill the entire container
- 10.
Which of these materials would change from a solid to a liquid if you held it in your hand for a few minutes?
A.A piece of chocolate
B.A steel spoon
C.A wooden stick
D.A plastic ruler
Download the worksheet for Materials and Matter - Properties of solids, liquids, and gases to practice offline. It includes additional chapter-level practice questions.
Changing states: Melting and Freezing
SubtopicChanging states: Melting and Freezing under Materials and Matter for Grade 3 IGCSE.
Preview questions (no answers)
- 1.
Which state of matter is a frozen juice bar?
A.Gas
B.Liquid
C.Solid
D.Soft
- 2.
What happens to liquid lead when it is cooled down significantly?
A.It stays liquid
B.It turns into a solid
C.It turns into a gas
D.It vanishes
- 3.
A sculptor carves a figure out of ice. On a hot day, the figure loses its shape. Why?
A.It is freezing
B.It is melting
C.It is growing
D.It is burning
- 4.
Which process is used to make ice cubes for a drink?
A.Melting
B.Freezing
C.Heating
D.Boiling
- 5.
What is missing in this process? Liquid Water + [?] = Solid Ice
A.Adding heat
B.Removing heat
C.Adding salt
D.Adding light
- 6.
Why does a metal worker heat gold to a very high temperature when making a ring?
A.To make the gold turn into gas
B.To change the solid gold into a liquid so it can be shaped
C.To make the gold freeze
D.To make the gold disappear
- 7.
Which statement is true about melting?
A.It only happens to water
B.Different materials melt at different temperatures
C.Melting always makes things colder
D.Things only melt at night
- 8.
What is required to turn a solid directly into a liquid?
A.Thermal energy (heat)
B.Light energy only
C.Sound energy
D.Magnetic energy
- 9.
Which of these involves a 'change of state'?
A.An ice cube turning into a puddle
B.Breaking a glass bottle into pieces
C.Cutting a piece of paper in half
D.Painting a wooden fence green
- 10.
When making homemade chocolate, you melt cocoa butter and mix it with cocoa powder. What happens as the mixture sits on the counter at room temperature?
A.It loses heat and freezes into a solid bar
B.It stays liquid unless you add ice
C.It evaporates into the kitchen air
D.It starts to boil
Download the worksheet for Materials and Matter - Changing states: Melting and Freezing to practice offline. It includes additional chapter-level practice questions.
Evaporation and condensation
SubtopicEvaporation and condensation under Materials and Matter for Grade 3 IGCSE.
Preview questions (no answers)
- 1.
Why does hanging a wet towel spread out help it dry faster than if it is bunched up in a ball?
A.It looks better
B.More surface area allows more evaporation
C.It makes the towel heavier
D.It keeps the towel cold
- 2.
When water boils in a pot, the bubbles that rise to the top are filled with...
A.Air
B.Water vapour
C.Liquid water
D.Ice
- 3.
If you have two identical puddles, but one is in the sun and one is in the shade, which one will evaporate first?
A.The one in the shade
B.The one in the sun
C.Both will evaporate at the same time
D.Neither will evaporate
- 4.
What is the opposite process of evaporation?
A.Melting
B.Freezing
C.Condensation
D.Boiling
- 5.
When water vapor turns into liquid water droplets to form clouds, what must happen to the temperature of the air?
A.The air must get much hotter.
B.The air must cool down.
C.The air must stay at boiling point.
D.The air must become completely dry.
- 6.
Which state of matter has no fixed shape and can be compressed (squashed) easily?
A.Solid
B.Liquid
C.Gas
D.Ice
- 7.
When salt is dissolved in water and the water is left to evaporate, what remains in the container?
A.Nothing, it all evaporates.
B.Only the salt crystals.
C.A mixture of salt and ice.
D.Liquid water vapor.
- 8.
Which change of state is the opposite of evaporation?
A.Melting
B.Freezing
C.Condensation
D.Boiling
- 9.
How does the surface area of a lake affect the local weather?
A.A larger surface area means less evaporation and dryer air.
B.A larger surface area allows more evaporation, which can lead to more clouds and rain.
C.Surface area has no effect on evaporation.
D.A larger surface area makes the water freeze faster.
- 10.
If you have a puddle of water and a puddle of cooking oil of the same size, why does the water puddle disappear first?
A.Water is lighter than oil.
B.Water evaporates at a much lower temperature than cooking oil.
C.Oil is a liquid that can never turn into a gas.
D.The sun's light cannot pass through oil.
Download the worksheet for Materials and Matter - Evaporation and condensation to practice offline. It includes additional chapter-level practice questions.
Testing materials for specific uses
SubtopicTesting materials for specific uses under Materials and Matter for Grade 3 IGCSE.
Preview questions (no answers)
- 1.
To test if a material will sink or float, what is the most important thing to do?
A.Place it in a container of water
B.Try to burn it with a match
C.Hit it with a hammer
D.Scratch it with a coin
- 2.
Why is wool used to make scarves?
A.It is very cold to the touch
B.It traps air and keeps the neck warm
C.It is as hard as metal
D.It is completely waterproof
- 3.
If a material is 'opaque', what happens when you shine a light on it?
A.All the light passes through
B.No light passes through it
C.The material disappears
D.The light turns into water
- 4.
Which material is most suitable for making a lightweight kite?
A.Thin nylon fabric
B.Thick lead plates
C.Heavy clay bricks
D.Solid iron bars
- 5.
When testing materials for a winter coat, a student finds that wool keeps the water warm for minutes, while cotton only keeps it warm for minutes. What can they conclude?
A.Cotton is a better insulator than wool
B.Wool is a better insulator than cotton
C.Both materials are equally good
D.Cotton is waterproof
- 6.
A student wants to see if a material is waterproof. They place a drop of water on the material. If the material is waterproof, what will the water do?
A.Soak into the material immediately
B.Stay as a bead on the surface
C.Change the color of the whole material
D.Turn into a solid
- 7.
An engineer is testing fabrics for a parachute. Which property is the most important to test for the safety of the jumper?
A.The color of the fabric
B.The strength and air resistance of the fabric
C.The transparency of the fabric
D.The magnetism of the fabric
- 8.
If you are testing four different types of 'paper' to see which can hold the most weight without tearing, what should you do to make it a fair test?
A.Use different sizes of paper
B.Use different types of weights
C.Make sure all the paper strips are the same width and length
D.Hang the weights for different amounts of time
- 9.
An athlete needs 'shoes' that will not slip on a wet running track. What property should the soles of the shoes have?
A.Low friction and high solubility
B.High friction and waterproofness
C.High transparency and magnetism
D.Low flexibility and high thermal conductivity
- 10.
A student wants to know if 'sugar' dissolves faster in 'hot' or 'cold' tea. They put one teaspoon of sugar in 100ml of hot tea and another in 100ml of cold tea. They stir both at the same speed. What are they measuring?
A.The sweetness of the tea
B.The time it takes for the sugar to disappear (dissolve)
C.The color of the tea
D.The weight of the tea cups
Download the worksheet for Materials and Matter - Testing materials for specific uses to practice offline. It includes additional chapter-level practice questions.
Reversible and irreversible changes
SubtopicReversible and irreversible changes under Materials and Matter for Grade 3 IGCSE.
Preview questions (no answers)
- 1.
If you freeze a grape until it is a solid, and then let it warm up, it will eventually soften again. This is a:
A.Reversible change
B.Irreversible change
C.Burning process
D.Chemical reaction
- 2.
Hard-boiling an egg in hot water is an irreversible change because:
A.The liquid inside the egg turns into a permanent solid
B.The egg can be turned back into a liquid by cooling it
C.The egg shell melts
D.The egg turns into steam
- 3.
Making jam by boiling fruit and sugar together is an example of:
A.An irreversible change
B.A reversible change
C.A freezing process
D.No change at all
- 4.
If you boil a pot of water until all the water is gone, where did the water go?
A.It turned into ice
B.It turned into ash
C.It turned into a gas called steam
D.It was destroyed forever
- 5.
If you stir cocoa powder into milk, and it all dissolves, how is this different from baking a brownie?
A.The milk is cold, but brownies are hot
B.The cocoa in milk can be recovered, but brownie ingredients have changed permanently
C.Brownies are delicious, but cocoa milk is not
D.There is no difference
- 6.
A glass bottle is broken into many small pieces. What type of change is this?
A.A reversible change because it's still glass
B.An irreversible change because you cannot easily stick it back to exactly how it was
C.A chemical change
D.A change of state
- 7.
Why is melting an ice cube a physical change?
A.Because it is irreversible
B.Because the water molecules stay the same, they just change how they move
C.Because the ice cube turns into a different substance
D.Because it requires fire to happen
- 8.
What is the common factor in most irreversible changes, like cooking or burning?
A.They always happen very quickly.
B.They always involve the formation of at least one new substance.
C.They only happen to solid materials.
D.They can be reversed if you use a freezer.
- 9.
When a firework explodes, it produces light, sound, and colorful sparks. This is an irreversible change because:
A.The fireworks are too high in the sky.
B.The explosion is too loud.
C.The chemical fuels have reacted to form new gases and solids.
D.You can't find the pieces of the firework after it explodes.
- 10.
A student heats a blue crystal. It turns into a white powder and steam is given off. When they add a drop of water to the white powder, it turns blue again. Is this change reversible?
A.No, because the crystal turned into powder.
B.Yes, because the original blue color and substance can be restored by adding water.
C.No, because the steam was lost to the air.
D.Yes, because the powder is very soft.
Download the worksheet for Materials and Matter - Reversible and irreversible changes to practice offline. It includes additional chapter-level practice questions.