Common Entrance Revision: 30 average and harder questions
KS3 Levels 4 and 5

1. What is the chemical formula for SALT (sodium chloride)?
 
 
 
 

Question 1 of 30

2. What happens to the current through a component if the voltage is increased?
 
 
 

Question 2 of 30

3. balanceThe diagram shows a log supported at its centre.
Peter is 1.5m from the centre and John is 2.5m from the centre.
How far will John have to move to make the log balance and in which direction?
 
 
 
 

Question 3 of 30

4. cell3This diagram shows three human body cells

Which one represents a sperm cell?
 
 
 

Question 4 of 30

5. A block measures 10cm x 8cm x 5cm
You are told that the block is made out of iron which has a density of 7g/cm³

What is the mass in kg?
 
 
 
 

Question 5 of 30

6. If you went to the moon what would happen to your mass?
 
 
 

Question 6 of 30

7. What percentage of the air is argon (approximately)?
 
 
 
 

Question 7 of 30

8. How many ‘equinoxes’ are there in a year?
 
 
 
 

Question 8 of 30

9. flowerLook at the diagram of a flower.
Where would you find the ovules?
 
 
 
 

Question 9 of 30

10. Which part of a cell contains the genetic material?
 
 
 
 

Question 10 of 30

11. Which of the energy changes below represents that which takes place in an electric motor?
 
 
 
 

Question 11 of 30

12. What form of energy is stored in a piece of coal?
 
 
 
 

Question 12 of 30

13. What type of object is the Sun
 
 
 
 

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14. What is the main reason a plant has leaves?
 
 
 
 

Question 14 of 30

15. Name an organ which helps digest food
 
 
 
 

Question 15 of 30

16. Which of the below is not an example of a chemical change?
 
 
 
 

Question 16 of 30

17. A section from an animals liver would be best described as
 
 
 
 

Question 17 of 30

18. What colour will universal turn when mixed with limewater?
 
 
 
 

Question 18 of 30

19.  

body5Which organ is the small intestine?
 
 
 
 

Question 19 of 30

20. When a gas changes to a liquid the process is called
 
 
 
 

Question 20 of 30

21. Wax is a compound of hydrogen and carbon (known as hydrocarbon).

What are the products of the reaction that takes place when wax burns completely in air.
 
 
 
 

Question 21 of 30

22. Where are the eggs made in an animal?
 
 
 
 

Question 22 of 30

23. Pick an acidic oxide from the list
 
 
 
 

Question 23 of 30

24. ledWhat component does this electrical symbol represent?
 
 
 
 

Question 24 of 30

25. What type of object is the Sun?
 
 
 
 

Question 25 of 30

26.
AfiltrationB
liebig
C
measuring_cylinder
D
change2
Which piece of apparatus would be used to separate sand from seawater?
 
 
 
 

Question 26 of 30

27. Is Mercury metal a solid, liquid or gas?
(at normal room temperature)
 
 
 

Question 27 of 30

28. Put the following processes into the correct order if you wished to obtain pure salt from rock salt
 
 
 

Question 28 of 30

29. What is the unit for electrical current?
 
 
 
 

Question 29 of 30

30. Substances can be obtained from the ground and purified in a variety of ways.

Which mineral can be extracted from the ground by pumping water into the ground which causes it to dissolve. The substance is then purified by letting the water evaporate.
 
 
 
 

Question 30 of 30