Skip to content
Back to quiz
6. How is concrete made?
- When cement is mixed with aggregate and mortar
- When cement is mixed with sand and mortar
- When cement is mixed with sand and aggregate
- When cement is mixed with sand and calcuim carbonate
7. What does thermal decomposition mean?
- Heating a substance up
- The difference between two compounds
- The breakdown using heat
- The death using heat
8. Why is concrete an important building material?
- Due to it's strength
- Due to it being renewable
- Due to it being inexpensive
- Due to it being a good conductor of heat
9. What is limestone made from?
- Carbon dioxide
- Calcuim oxide
- Calcuim carbonate
- Calcuim hydroxide
10. What is calcuim hydroxide?
- An alkali, that can be used to neutralise acids
- An acid, that can be used to neutralise alkalis
- A mixture of metals
- A mixture of calcuim and carbon
11. Where can calcuim carbonate be found?
- Quarries
- Oceans
- Waters
- Rivers
12. What can calcuim carbondate be broken down into?
- Calcuim dioxide and carbon oxide
- Calcuim hydroxide solution
- Calcuim oxide and carbon dioxide
- Calcuim hydroxide
13. What causes limewater to turn milky when it is present?
- Carbon dioxide
- Calcuim hydroxide
- Water
- Oxygen
14. What is formed when cement is mixed with sand?
- Calcuim oxide
- Concrete
- Mortar
- Calcuim carbonate