Common Entrance Revision: 10 Easy and harder questions
KS3 Levels 4 and 5
Answer all 10 questions and then press ‘Submit’
Your score and any corrections will then be shown

1. What is the test for oxygen gas?
2. If hydrated copper sulphate is heated until it has all decomposed the solid product will: .....
3. What is the unit for density
4. What colour is sulphur?
5. Yeast, which is used to make bread, is a living organism
6. Name the waste gas that we breath out
(produced during respiration)
7. Some plastic is bio readable.

What does biodegradable mean?
8. An acid would have what pH number?
9. Name a substance with a pH value more than pH7
10. Which part of your skeleton protects the heart and lungs