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

1. What is yeast used for?
 
 
 
 

Question 1 of 30

2. Fill in the missing word from the equation shown below:
Acid + alkali     →    …………    +   water
 
 
 
 

Question 2 of 30

3. What is the word equation for the reaction between copper and oxygen
 
 
 
 

Question 3 of 30

4. Complete the word equation for photosynthesis:Carbon dioxide + water   (+ sunlight)  → ………………..   ……………………..(put two ticks to indicate the two missing substances)
 
 
 
 

Question 4 of 30

5. What causes day and night?
 
 
 
 

Question 5 of 30

6. Most microorganisms cannot be seen without a….
 
 
 

Question 6 of 30

7. Which of these materials is attracted to a magnet?
 
 
 
 

Question 7 of 30

8. About 20cm of magnesium ribbon is chopped up into 1cm lengths and placed in a crucible which is then weighed along with its lid.
The crucible is heated strongly and the lid gently raised avery few seconds.

When the reaction is over the crucible + contents + lid are all re-weighed

These are his results:
  • Mass of empty crucible + lid  = 51.2g
  • Mass of crucible + lid + magnesium (before heating) = 54.3g
  • Mass of crucible + lid + contents (after heating) = 54.7g
 

Did the magnesium gain mass, loose mass or not change in mass?
 
 
 
 

Question 8 of 30

9. Which of the below is a fossil fuel?
 
 
 
 

Question 9 of 30

10. You find an animal whose body is covered with scales.
The animal is lying in the shade of some grass, breathing oxygen using lungs.
To which animal group is this animal likely to belong?
 
 
 
 

Question 10 of 30

11. During an eclipse of the sun
 
 
 

Question 11 of 30

12. About 20cm of magnesium ribbon is chopped up into 1cm lengths and placed in a crucible which is then weighed along with its lid.

The crucible is heated strongly and the lid gently raised avery few seconds.

When the reaction is over the crucible + contents + lid are all re-weighed

These are his results:
  • Mass of empty crucible + lid  = 51.2g
  • Mass of crucible + lid + magnesium (before heating) = 54.3g
  • Mass of crucible + lid + contents (after heating) = 54.7g
 

What is the word equation for the reaction that takes place?
 
 
 
 
 

Question 12 of 30

13. What type of object is the Sun
 
 
 
 

Question 13 of 30

14. What percentage of the air is oxygen (approximately)?
 
 
 
 

Question 14 of 30

15. circuit3Look at the circuit diagram and say which of these statements is true.
 
 
 
 

Question 15 of 30

16. A block measures 10cm x 8cm x 5cm
It has a mass of 2kg

What is the volume of the block (in cm³)?

 
 
 
 
 

Question 16 of 30

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

Question 17 of 30

18. When a guitar makes a higher note what happens to the vibrating string?
 
 
 
 

Question 18 of 30

19. When clothes dry the water is
 
 
 
 

Question 19 of 30

20. Which of the following is not a form of energy
 
 
 
 

Question 20 of 30

21. Galvanised iron sheets are made of iron coated with a very thin layer of which metal?
 
 
 
 

Question 21 of 30

22. What formula is used to calculate speed?
 
 
 
 

Question 22 of 30

23. bunsen1bThis diagram shows a Bunsen burner.
The flame is yellow and smoky.

Is the air hole open or closed?
 
 

Question 23 of 30

24. Name a substance with a pH value less than pH7
 
 
 
 

Question 24 of 30

25. Where does the embryo develop in the human body?
 
 
 
 

Question 25 of 30

26. Where does fertilization take place in the human body?
 
 
 
 

Question 26 of 30

27. Which gas is removed from the air when something burns?
 
 
 
 

Question 27 of 30

28. Substances that help build and repair body tissues (like skin and muscle) will be high in which food substance?
 
 
 
 

Question 28 of 30

29. Pick the correct sentence from those given to best  describe the term below:

Pitch
 
 
 
 

Question 29 of 30

30. circuit3If I unscrewed bulb B from its holder what would happen to the other bulbs?
 
 
 
 

Question 30 of 30