Question 1

Which one of the following options consists of non-matter only?

Accepted Answer

3) Sunlight Music. Matter has mass and occupies space. Non-matter does not. Air and saliva are matter. Thunder, wind, lightning, sunlight, and music are forms of energy or phenomena, not matter. Shadow is an absence of light, not matter. Among the given options, only 'Sunlight Music' consists entirely of non-matter.

Question 2

Jasmine placed a coin into a beaker of water as shown below. Which one of the following about the coin is correct?

Accepted Answer

2) Both the shape and volume of the coin did not change.. A coin is a solid. Solids have a definite shape and a definite volume. Placing it in water does not change its intrinsic shape or volume.

Question 3

The diagram below shows a flowchart. Which of the following letters best represents orange juice?

Accepted Answer

2) Y. Orange juice is a liquid. Liquids have a definite volume but do not have a definite shape; they take the shape of their container. Following the flowchart:
- Matter -> Does it have a definite volume? (Yes)
- Does it have a definite shape? (No)
This path leads to Y. Therefore, Y represents a liquid.

Question 4

The diagram below shows the observations made before and after a cube is placed into a beaker of water. Which of the following information can be obtained from the experiment above?
A The cube weighs 100 g.
B The cube occupies space.
C The volume of the cube is 100 cm³.
D The volume of the water in the beaker has increased to 300 cm³.

Accepted Answer

2) B and C only. A: The experiment shows volume displacement, not mass. We cannot determine the weight of the cube (100g) from the given information. So, A is incorrect.
B: The water level rises after the cube is placed in, indicating that the cube takes up space. This is a property of matter. So, B is correct.
C: The initial water volume was 200 ml. The final water level (with cube) is 300 ml. The volume of the cube is the volume of water displaced, which is 300 ml - 200 ml = 100 ml. Since 1 ml = 1 cm³, the volume of the cube is 100 cm³. So, C is correct.
D: The volume of the water itself did not increase; the *total volume* (water + cube) increased, causing the *water level* to rise. The water volume remained 200 ml. So, D is incorrect.
Therefore, only B and C can be obtained from the experiment.

Question 5

Steven has a 500 cm³ tank as shown below. Using an air pump, he pumped in 200 cm³ of air into the tank. How much air is there in the tank in the end?

Accepted Answer

3) 500 cm³. Air is a gas. Gases do not have a definite volume and will expand to fill the entire volume of the container they are in. Regardless of the amount of air pumped in, the air will occupy the full volume of the tank, which is 500 cm³.

P4 Science CA1 2025 — Nanyang

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