Carib Quiz - Chemistry
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Chemistry
1. Question

When aluminium is extracted by electrolysis, cryolite is added to:

2. Question

In terms of mass, compared to a proton, an electron:

3. Question

The alloy, brass, contains copper and:

4. Question

When black copper oxide is heated with carbon, brown copper metal is produced, which means that compared to copper, carbon is the:

5. Question

Candied fruits are preserved in a strong solution of:

6. Question

All of these are alkenes EXCEPT for:

7. Question

The non-metal used to make margarine is:

8. Question

All of these are ordered crystalline structures EXCEPT for:

9. Question

The alcohol in beer and spirits is called:

10. Question

The active catalyst in a car′s catalytic converter is:

11. Question

All of these are carbohydrates EXCEPT for:

12. Question

The electrical charges on a proton and an electron are:

13. Question

g/dm3 are units of:

14. Question

Reactive metals such as potassium react with water to give hydrogen and:

15. Question

In making bread the enzymes in yeast break down starch to give:

16. Question

In electrolysis the anode is the:

17. Question

The group of elements whose molecules and atoms are the same is called:

18. Question

Raising the temperature of a reversible reaction always encourages the:

19. Question

The only one of the following which is NOT a change of state is:

20. Question

The energy used in thermal decomposition is:

21. Question

We use expanded polystyrene cups for heat of reaction experiments because the cups are:

22. Question

Ammonia gas spreads out faster than hydrogen chloride, showing that it is:

23. Question

Common salt can be used to make all of these EXCEPT for:

24. Question

The number of carbon atoms in the alcohol, pentanol, is:

25. Question

A flame test colour of red could indicate the presence of a compound of:

26. Question

All of these elements form allotropes EXCEPT for:

27. Question

If a reaction takes 50 seconds at 25 ℃, then at 50 ℃ the time for the reaction in seconds is likely to be about:

28. Question

The proportions of elements in a pure compound are always:

29. Question

Hydrocarbons contain carbon and:

30. Question

When potassium burns in chlorine, the material that is oxidised is called:

31. Question

Iron chloride can be prepared from the reaction of iron and:

32. Question

The number of electrons in a full electron shell is:

33. Question

One Faraday represents:

34. Question

Nitrogen fixation produces:

35. Question

If the relative atomic mass (RAM) = 1 for hydrogen and 16 for oxygen, the formula mass for H2O2 is:

36. Question

None of these solutions in water conducts electricity EXCEPT for:

37. Question

Hydrochloric acid forms salts called:

38. Question

A plastic that softens every time it is heated is said to be:

39. Question

Particles are furthest apart in:

40. Question

Herbicides are used to destroy:

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Chemistry Unit 1