Carib Quiz - Chemistry
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Chemistry
1. Question

The charge on a sodium ion is always:

2. Question

When solid carbon dioxide turns straight into a gas we call it:

3. Question

The major plant nutrients written as NPK refer to phosphorus, nitrogen and:

4. Question

To remove limescale from a tap you need:

5. Question

To make cell walls, plants must have:

6. Question

Powders react faster than lumps because they have:

7. Question

The state symbol for a solution in water is:

8. Question

The two main protein groups are globular and:

9. Question

A reaction that gives out heat is said to be:

10. Question

Potassium reacts quickly with water but we do not use it with acids because:

11. Question

Any solution with a pH below 7 must be:

12. Question

The empirical formula, C6H12O6, gives the simplest ratio as:

13. Question

You never find native magnesium because:

14. Question

The halogens are found in:

15. Question

The Earth′s first atmosphere contained all of these gases EXCEPT for:

16. Question

When limestone is heated strongly it changes into:

17. Question

The gas released by baking powder is:

18. Question

More collisions between particles are likely to happen if a solution is made:

19. Question

A salt that is anhydrous contains no:

20. Question

All of these are properties of carbon monoxide EXCEPT for:

21. Question

The number of particles in a mole of any gas is always:

22. Question

To complete the reaction: acid + carbonate → salt + carbon dioxide + ?, we must add the word:

23. Question

An insoluble metal oxide can be described as:

24. Question

In metals, the particles forming the structure are all:

25. Question

The voltages from the electrochemical series are -2.92 for potassium and +0.34 for copper, which shows that:

26. Question

All of these materials are used in a blast furnace EXCEPT for:

27. Question

The type of bonding that involves loss or gain of electrons is called:

28. Question

The catalyst in the Haber Process is:

29. Question

The simplest ratio of atoms in a compound is given by the:

30. Question

The main metal in tin cans used to preserve food is:

31. Question

The gas that relights a glowing splint is:

32. Question

Food can be preserved in all of these ways EXCEPT for:

33. Question

At the cathode all of these can happen EXCEPT for:

34. Question

A molecule of ethene can be described as all of these EXCEPT for:

35. Question

One example of an emulsifying agent is:

36. Question

Different structures based on the same molecular formula are called:

37. Question

The following are all natural materials EXCEPT for:

38. Question

The number of electrons shared in a single covalent bond is:

39. Question

The sharp-tasting compound in vinegar is:

40. Question

The standard atom used for mass calculations is:

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Chemistry Unit 1