3G SCi Yr4 Theme3 Cycles Rev3(g)

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Question 1 of 15

1. Question
Three things that are needed for rust to happen are __________ .
- moist air, water and oxygen.
- air, dry water and oxygen.
- water, mud and oil.
- oil, oxygen and water.
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Question 2 of 15

2. Question
What does it mean when a substance is said to be soluble?
- It dissolves/mixed in the air
- It dissolves/mixed when spraying
- It dissolves/mixed in water
- It floats in water
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Question 3 of 15

3. Question
In how many different states does water exists?
- One, 1
- Two, 2
- Three, 3
- Four, 4
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Question 4 of 15

4. Question
Choose one correct answer in each drop-down list.
- (i) is the water in the form of a gas resulting from heating water or ice.
  
  (ii) water which collects as droplets on a cold surface when humid air is in contact with it.
  
  (iii) means it can dissolve things for example water can dissolve salt.
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Question 5 of 15

5. Question
Water freezes to form ice means the water losses heat.
- True
- False
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Question 6 of 15

6. Question
Water boils to form steam means the heat is loss.
- True
- False
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Question 7 of 15

7. Question
Haze is caused by condensation.
- True
- False
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Question 8 of 15

8. Question
Study the figure shown.

(i) Name the process Z?
- evaporation
- condensation
- freezing
- boiling
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Question 9 of 15

9. Question
Study the diagram in figure below.

(ii) Name the process Y?
- evaporation
- condensation
- freezing
- boiling
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Question 10 of 15

10. Question
Figure shows an ice cube placed in a box.

Which of the following statements about melting ice is correct?
- The ice loses heat to the surface of the box.
- The ice gains heat from the sides of the box.
- The ice loses heat to the air inside the box.
- The ice gains heat from the air inside the box.
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Question 11 of 15

11. Question
Match the given words with the correct statement of the experiment statement below.
- (a) Some cubes were dropped into a glass of lemonade water.
  
  (b) After 10 minutes, the lemonade water in a glass becomes .
  
  (c) The ice cubes would become in size.
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Question 12 of 15

12. Question
Fill in the Correct Answer.
- The change of state from liquid to solid is .
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Question 13 of 15

13. Question
Fill in the Correct Answer.
- The sand is in a glass of water.
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Question 14 of 15

14. Question
Sally has added a small amount of sugar into her hot chocolate. Choose the three correct statements for the experiment:
- Sugar is insoluble in coffee
- Sugar does not dissolve in coffee
- Sugar disappears in coffee
- Sugar is soluble in coffee
- Sugar is soluble in coffee
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Question 15 of 15

15. Question
Arrange the following items in the correct order.
- Warm air rises and then cools.
- Condensation occurs.
- When the water droplets become bigger, they fall as rain.
- Water evaporates.
- Heat energy from the Sun warms the Earth.
- Droplets of water from clouds.
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