Properties and Changes of Materials
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Reversible changes (dissolving, melting, evaporating)
SubtopicReversible changes (dissolving, melting, evaporating) under Properties and Changes of Materials for Grade 5 IGCSE.
Preview questions (no answers)
- 1.
When wet clothes are hung outside in the wind, they dry. This is because the water:
A.Melts into the clothes
B.Dissolves into the fabric
C.Evaporates into the air
D.Freezes into the air
- 2.
Which of these is the best description of a reversible change?
A.A change that happens very quickly
B.A change that cannot be undone
C.A change that results in a new substance
D.A change that can be undone to get the original material back
- 3.
In a sugar solution, why does the sugar seem to disappear?
A.It turns into gas
B.It breaks into tiny pieces too small to see
C.It is destroyed by the water
D.It floats to the top and escapes
Download the worksheet for Properties and Changes of Materials - Reversible changes (dissolving, melting, evaporating) to practice offline. It includes additional chapter-level practice questions.
Irreversible changes (burning, rusting, mixing acid and bicarbonate of soda)
SubtopicIrreversible changes (burning, rusting, mixing acid and bicarbonate of soda) under Properties and Changes of Materials for Grade 5 IGCSE.
Preview questions (no answers)
- 1.
Which of these is created when wood is completely burned in a fireplace?
A.Fresh wood
B.Ash
C.Liquid water
D.Oxygen
- 2.
What do we call a change that cannot be undone?
A.Reversible
B.Temporary
C.Irreversible
D.Physical
- 3.
Which material is used to coat some metals to prevent them from rusting?
A.Zinc
B.Paper
C.Salt
D.Sponge
Download the worksheet for Properties and Changes of Materials - Irreversible changes (burning, rusting, mixing acid and bicarbonate of soda) to practice offline. It includes additional chapter-level practice questions.
Separating mixtures (filtering, sieving, and decanting)
SubtopicSeparating mixtures (filtering, sieving, and decanting) under Properties and Changes of Materials for Grade 5 IGCSE.
Preview questions (no answers)
- 1.
If you have a mixture of oil and water, the oil floats on top. How can you separate most of the oil?
A.Filtering it through paper
B.Sieving it
C.Decanting the oil into another container
D.Freezing it
- 2.
What is the first step in decanting a sand and water mixture?
A.Pour it immediately
B.Let the mixture sit until the sand settles
C.Boil the water
D.Stir it as fast as possible
- 3.
Which property is NOT used to separate mixtures by sieving, filtering, or decanting?
A.Particle size
B.Solubility
C.Magnetism
D.Density (sinking/floating)
Download the worksheet for Properties and Changes of Materials - Separating mixtures (filtering, sieving, and decanting) to practice offline. It includes additional chapter-level practice questions.
Conductivity and insulation of materials
SubtopicConductivity and insulation of materials under Properties and Changes of Materials for Grade 5 IGCSE.
Preview questions (no answers)
- 1.
Birds often fluff up their feathers in the winter. How does this help them?
A.It makes them look bigger to predators
B.It traps air, which is a good insulator, to keep them warm
C.It allows them to conduct more heat from the sun
D.It helps them fly faster in cold air
- 2.
Which of these would be the best material for making a protective case for a smartphone?
A.Aluminum
B.Silicone (Insulator)
C.Copper
D.Steel
- 3.
What is the result of placing a thermal insulator between a hot object and a cold object?
A.The hot object gets hotter
B.The cold object gets colder
C.The transfer of heat is slowed down
D.The heat is destroyed
Download the worksheet for Properties and Changes of Materials - Conductivity and insulation of materials to practice offline. It includes additional chapter-level practice questions.