Skip to content
Back to quiz
6. Complete combustion produces...
- more energy
- soot
- carbon monoxide
7. There is ......oxygen in the atmosphere
8. Catalytic converters...
- convert hydrogen into water
- convert carbon monoxide into carbon dioxide
- convert nitrogen into ammonia
9. Alkenes have a...
- double bond
- single bond
- no bond
10. Polymers are made from very small molecules called monomers
11. Ethene polymerise to form
12. Many polymers can be recycled
13. When protein molecules change shape they have
- denatured
- reversed
- melted
14. Emulsifiers
- evaporate the water from the oil
- help oil and water mix
- stop oil and water from mixing
15. Limewater turns .........when carbon dioxide is present
16. Phosphorescent pigments are more dangerous than the older radioactive pigments
17. Saturated compounds have a
- single bond
- double bond
- no bond
18. Deforestation.............the level of carbon dioxide in the atmosphere
- doesn't change
- increases
- decreases
19. Fossil fuels being burnt are increasing because the population is increasing
20. Why is PTFE laminated onto nylon?
- it is too fragile on its own
- it looks better
- to make it breathable