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Primary 6 PSLE Science Materials Quiz

Free P6 PSLE Science Materials quiz, HY3 Exam version, with questions, answers, and PSLE-focused practice for Singapore students.

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Questions

Primary 6 PSLE Science Quiz - Materials

Name: ______________________
Class: ______________________
Date: ______________________
Score: ______________________

Duration: 40 minutes
Total Marks: 40

Instructions:

This quiz has 20 questions on the topic of Materials.
Section A: 10 multiple-choice questions (1 mark each).
Section B: 5 short-answer questions (2 marks each).
Section C: 5 structured questions with subparts (total 10 marks).
Write your answers clearly in the spaces provided.

Section A (Questions 1–10, 1 mark each)

Which of the following is a property of a material that is a good conductor of heat?
A. It feels cold quickly when touched
B. It does not allow heat to pass through
C. It allows heat to pass through easily
D. It melts at a low temperature

Answer: ______
A material that can be bent into different shapes without breaking is said to be
A. brittle
B. malleable
C. transparent
D. magnetic

Answer: ______
Which of these materials is most likely to rust when left in air and water?
A. Plastic spoon
B. Iron nail
C. Glass rod
D. Wooden stick

Answer: ______
Which statement about solubility is correct?
A. All solids dissolve in water
B. Sugar dissolves in water to form a solution
C. Sand forms a solution with water
D. Oil dissolves easily in water

Answer: ______
A transparent material
A. lets light pass through and you can see through it
B. blocks all light
C. bends light away from objects
D. reflects all light

Answer: ______
Which of the following is an example of a material that is a poor conductor of electricity?
A. Copper wire
B. Aluminium foil
C. Rubber glove
D. Steel pin

Answer: ______
When a piece of chalk is dropped, it breaks easily. Chalk is best described as
A. elastic
B. brittle
C. ductile
D. soluble

Answer: ______
Which material is most suitable for making the handle of a cooking pot?
A. Metal
B. Plastic
C. Glass
D. Iron

Answer: ______
Which of the following is a reversible change?
A. Burning paper
B. Rusting iron
C. Melting ice
D. Baking a cake

Answer: ______
A material that is attracted to a magnet is called
A. non-magnetic
B. magnetic
C. insulating
D. soluble

Answer: ______

Section B (Questions 11–15, 2 marks each)

State one property of plastic that makes it useful for storing food, and explain why.
Explain why a wooden door is used instead of a metal door in some houses.
Give two ways to prevent an iron gate from rusting.

(i) _______________________________________________________
(ii) _______________________________________________________
A student puts salt into a beaker of water and stirs. Describe what happens to the salt and name the resulting mixture.
State one difference between a material that is malleable and one that is brittle.

Section C (Questions 16–20, total 10 marks)

(a) What is a conductor of electricity? (1 mark)

(b) Give one example of a good conductor and one example of a poor conductor. (1 mark)
Good: _______________ Poor: _______________
(a) State whether melting chocolate is a reversible or irreversible change. (1 mark)

(b) Explain your answer. (1 mark)
A test is done on four materials: cotton, rubber, steel, and glass.
(a) Which material is transparent? (1 mark)

(b) Which material is most likely to stretch and return to shape? (1 mark)
(a) What is rusting? (1 mark)

(b) Name two things needed for iron to rust. (1 mark)
(i) _______________ (ii) _______________
(a) State one property of glass. (1 mark)

(b) Give one use of glass based on this property. (1 mark)

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Answers

Primary 6 PSLE Science Quiz - Materials: Answer Key

Total Marks: 40
Topic: Materials

Section A (1 mark each)

C
Teaching note: A good conductor of heat allows heat to pass through easily. Metals like steel are good conductors; choices A/B describe poor conductors or insulators.
B
Teaching note: Malleable means can be bent or shaped without breaking. Brittle (A) breaks easily; transparent (C) is about light; magnetic (D) is about magnets.
B
Teaching note: Iron rusts in the presence of air and water. Plastic, glass, wood do not rust.
B
Teaching note: Sugar dissolves in water to form a solution (solute + solvent). Sand does not dissolve; oil does not mix with water.
A
Teaching note: Transparent materials let light through and objects can be seen clearly, e.g. clear glass.
C
Teaching note: Rubber is an insulator (poor conductor). Copper, aluminium, steel are conductors.
B
Teaching note: Brittle materials break easily when dropped or hit. Chalk is brittle.
B
Teaching note: Plastic is a poor conductor of heat, so it does not get too hot to hold. Metal/iron would be dangerous.
C
Teaching note: Melting ice is reversible (water freezes again). Burning, rusting, baking are irreversible.
B
Teaching note: Magnetic materials are attracted to magnets (e.g. iron, steel). Non-magnetic are not.

Section B (2 marks each)

Property: Plastic is waterproof / does not react with food / lightweight. (1 mark)
Explanation: It keeps food dry and safe from spoilage; does not allow air/water in. (1 mark)
Common mistake: Saying “strong” without linking to food storage.
Answer: Wood is a poor conductor of heat, so it keeps the house cooler and is safer to touch; metal conducts heat and may be too hot/cold. (2 marks: 1 for property, 1 for reason)
Teaching note: Link material property to use.
Any two: (1 mark each, total 2)
(i) Paint it / oil it
(ii) Galvanise with zinc / keep dry / cover with plastic
Marking: Both correct methods = 2 marks.
Description: Salt dissolves and seems to disappear; water becomes salty. (1 mark)
Mixture name: Solution. (1 mark)
Teaching note: Salt = solute, water = solvent.
Difference: Malleable materials can be bent without breaking; brittle materials break easily when force is applied. (2 marks: 1 each concept)

Section C (Total 10 marks)

(a) Conductor of electricity: A material that allows electric current to flow through it. (1 mark)
(b) Good: copper / steel (0.5); Poor: rubber / plastic (0.5).
(a) Reversible (1 mark)
(b) Because melted chocolate can harden again when cooled; no new substance formed. (1 mark)
(a) Glass (1 mark)
(b) Rubber (1 mark: stretches and returns)
(a) Rusting: A chemical change where iron reacts with air and water to form rust (iron oxide). (1 mark)
(b) Air (oxygen) and water (1 mark, 0.5 each)
(a) Property: Transparent / hard / does not rust. (1 mark)
(b) Use: Window pane (from transparent) / bottle (from hard). (1 mark linked to property)

Audit: 20 questions, marks = 10+10+10 = 40. All answers matched to numbering. Level-appropriate language used.