Home Past papers Science P5 Science CA1 2025 — Henry Park
P5 Science CA1 2025 — Henry Park
P5
Science
2025
CA1
12 questions
15 marks
Source: Henry Park, 2025
This P5 Science CA1 paper from Henry Park (2025) contains 12 questions worth 15 marks. Use it as a study reference for Science topics typically tested at P5 level in Singapore schools.
Q1 Q1 Q1 Q1 Q1 Q2 Q2 Q2 Q2 Q3 Q3 Q3
Q1
Open-ended
2 marks
🖼 Visual
Visual context
A diagram shows a beaker labeled 'mixture' containing two materials. Another diagram shows a small plastic bag labeled 'plastic bag' containing an object labeled 'Q'. A third diagram shows an empty beaker labeled 'An empty beaker'.
Describe how you separated the two materials from the mixture using object Q.
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Q1
Open-ended
🖼 Visual
Visual context
A diagram shows a beaker labeled 'mixture' containing two materials. Another diagram shows a small plastic bag labeled 'plastic bag' containing an object labeled 'Q'. A third diagram shows an empty beaker labeled 'An empty beaker'.
After you have separated one of the materials from the mixture using object Q, place the material and object Q in the empty beaker.
Attempt the rest of the questions given.
Your teacher will check the materials in both breakers after you have separated them.
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Q1
Open-ended
🖼 Visual
Visual context
A diagram shows a beaker labeled 'mixture' containing two materials. Another diagram shows a small plastic bag labeled 'plastic bag' containing an object labeled 'Q'. A third diagram shows an empty beaker labeled 'An empty beaker'.
Use object Q to separate the materials in the mixture. Do not remove object Q from the plastic bag.
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Q1
Open-ended
🖼 Visual
Visual context
A diagram shows a beaker labeled 'mixture' containing two materials. Another diagram shows a small plastic bag labeled 'plastic bag' containing an object labeled 'Q'. A third diagram shows an empty beaker labeled 'An empty beaker'.
Observe the mixture carefully.
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Q1
Open-ended
2 marks
🖼 Visual
Visual context
A diagram shows a beaker labeled 'mixture' containing two materials. Another diagram shows a small plastic bag labeled 'plastic bag' containing an object labeled 'Q'. A third diagram shows an empty beaker labeled 'An empty beaker'.
Explain why object Q is able to remove only one material from the mixture.
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Q2
Open-ended
2 marks
🖼 Visual
Visual context
Fruits of plant T are mentioned, but no visual is provided on this page. The question refers to a physical observation of the fruit that would be provided in a real exam setting.
Based on your observation, explain your answer in part (c).
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Q2
Open-ended
1 mark
Why do plants reproduce?
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Q2
Open-ended
1 mark
How do flowering plants reproduce?
Flowering plants reproduce by
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Q2
MCQ
1 mark
🖼 Visual
Visual context
Fruits of plant T are mentioned, but no visual is provided on this page. The question refers to a physical observation of the fruit that would be provided in a real exam setting.
How do you think the fruits of plant T are dispersed?
Circle the correct answer. (by water | by animals | by splitting | by wind)
by water
by animals
by splitting
by wind
Explanation
Based on the explanation given for part (d), the fruit of plant T has a 'parachute-like part'. This structural adaptation is characteristic of fruits that are dispersed by wind, allowing them to be carried over long distances.
Q3
Open-ended
2 marks
🖼 Visual
Visual context
A diagram shows a pair of spectacles, with one of the lenses clearly labeled 'Z'. Below it, a rectangular block is shown, labeled 'Material W'.
Explain your answer for part (a)(i).
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Q3
Structured
2 marks
🖼 Visual
Visual context
A diagram shows a pair of spectacles, with one of the lenses clearly labeled 'Z'. Below it, a rectangular block is shown, labeled 'Material W'.
Besides strength, state two other properties that Ahmad needs to test in order to confirm if material W is suitable to make part Z.
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Q3
Structured
2 marks
🖼 Visual
Visual context
A diagram shows a pair of spectacles, with one of the lenses clearly labeled 'Z'. Below it, a rectangular block is shown, labeled 'Material W'. The answer key also includes a diagram showing a torch shining light through Material W.
State the property you have mentioned in part (a)(ii).
Describe how Ahmad could test material W for this property.
Or you may draw and label how the set-up looks like for testing the material.
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