1. Question 1
What do each of the 3 hazard warning symbols below mean?

2. Dangerous to the environment
Question 1
What do each of the 3 hazard warning symbols below mean?
Dangerous to the environment
Flammable
Toxic

3. Question 2
Which picture(s) could represent molecules of an element? A B C D

4. Question 2
Which picture(s) could represent molecules of an element? A B C D D

5. Question 3
Name all the elements present in the compound called magnesium bromide.

6. Question 3
Name all the elements present in the compound called magnesium bromide.
Magnesium and bromine.

7. Question 4 Match the word to the definition. A) Solution B) Solvent
1) The liquid that a substance dissolves in.
A) Solution
2) The substance which dissolves in a liquid.
B) Solvent
3) The special mixture formed when a substance dissolves in a liquid.
C) Solute

8. Question 4 Match the word to the definition. A) Solution B) Solvent
1) The liquid that a substance dissolves in.
A) Solution
2) The substance which dissolves in a liquid.
B) Solvent
3) The special mixture formed when a substance dissolves in a liquid.
C) Solute

9. Question 5 Which of the following two compounds is soluble in water?
Calcium carbonate or lead (II) nitrate

10. Question 5 Which of the following two compounds is soluble in water?
Calcium carbonate or lead (II) nitrate
lead (II) nitrate

12. Question 6 Which two separation techniques are described below?
Used to separate 2 liquids with different boiling points
b) Used to separate an insoluble solid from a liquid.

13. Question 6 Which two separation techniques are described below?
Used to separate 2 liquids with different boiling points
b) Used to separate an insoluble solid from a liquid.
distillation
filtration

14. Question 7

15. Question 7
D - Sulphur

16. Question 8
In the chromatography experiment shown below which colour of ink is most soluble in the solvent?

17. Question 8
In the chromatography experiment shown below which colour of ink is most soluble in the solvent?
blue

18. Question 9
Which picture(s) below could represent a chemical reaction? A B C D

19. Question 9
Which picture(s) below could represent a chemical reaction? A B C D
A & C

20. Question 10 A) Effervescence B) Exothermic C) Endothermic
Match the word to the definition.
1) A chemical reaction in which heat is released.
A) Effervescence
2) A chemical reaction in which heat is taken in.
B) Exothermic
3) Bubbling and fizzing as a gas escapes from an aqueous solution
C) Endothermic

21. Question 10 A) Effervescence B) Exothermic C) Endothermic
Match the word to the definition.
1) A chemical reaction in which heat is released.
A) Effervescence
2) A chemical reaction in which heat is taken in.
B) Exothermic
3) Bubbling and fizzing as a gas escapes from an aqueous solution
C) Endothermic

22. Question 11

23. Question 11 6

24. Question 12
In the experiments below, chalk reacts with acid. The same mass of chalk and the same acid is used in all 4 experiments.
Which two experiments could be used to show the effect of particle size on the speed of reaction.

25. Question 12
In the experiments below, chalk reacts with acid. The same mass of chalk and the same acid is used in all 4 experiments.
Which two experiments could be used to show the effect of particle size on the speed of reaction.
A & B

26. Question 13
In the experiments below, chalk reacts with acid. The same mass of chalk and the same acid is used in all 4 experiments.
Which experiment would take the longest time to finish.

27. Question 13
In the experiments below, chalk reacts with acid. The same mass of chalk and the same acid is used in all 4 experiments.
Which experiment would take the longest time to finish. B

28. Question 14
Matthew added 0.1g manganese dioxide to hydrogen peroxide solution and oxygen was produced. Manganese dioxide is a catalyst.
What is a catalyst?
What will be the mass of the manganese dioxide at the end of the reaction?

29. Question 14
Matthew added 0.1g manganese dioxide to hydrogen peroxide solution and oxygen was produced. Manganese dioxide is a catalyst.
What is a catalyst?
What will be the mass of the manganese dioxide at the end of the reaction?
A catalyst is a substance which speeds up a chemical reaction and can be recovered unchanged at the end of the reaction (it is not used up itself).
0.1 g (A catalyst is not used up in a reaction).

30. Question 15
What is the memory aid used to help us remember our good graph checklist? What does each letter stand for?

31. Question 15 Points Labels Units Size Scale
What is the memory aid used to help us remember our good graph checklist? What does each letter stand for?
Points
Labels
Units
Size
Scale

32. Question 16
Which curve below shows the slowest reaction? How do you know this?

33. Question 16
Which curve below shows the slowest reaction? How do you know this?
Large chips (green curve)
- Least steep slope.

34. Question 17
Complete the table of information about protons.

35. Question 17
Complete the table of information about protons. 1 +
nucleus

36. Question 18
What is the formula for the molecule shown below?

37. Question 18 C5H10O2 (in any order)
What is the formula for the molecule shown below?
C5H10O2 (in any order)

38. Question 19
What is the formula for carbon tetrachloride?

39. Question 19
What is the formula for carbon tetrachloride?
CCl4 or Cl4C

40. period (row) OR group (column)
Question 20
Select the correct answer to complete the statement below.
Elements in the same __________________ have similar chemical properties.
period (row) OR group (column)

41. period (row) OR group (column)
Question 20
Select the correct answer to complete the statement below.
Elements in the same __________________ have similar chemical properties.
group (column)
period (row) OR group (column)

42. Question 21
Methane reacts with oxygen to form carbon dioxide and water.
In this reaction is water a reactant or a product?
Write the word equation for this reaction.

43. Question 21
Methane reacts with oxygen to form carbon dioxide and water.
In this reaction is water a reactant or a product?
Write the word equation for this reaction.
product
methane + oxygen -> carbon dioxide + water

44. Question 22 A Ethanol (C2H5OH) B Aluminium fluoride (AlF3)
Which of the substances below is/are ionic?
There may be more than one!
A Ethanol (C2H5OH)
B Aluminium fluoride (AlF3)
C Sodium bromide (NaBr)
D Nitrogen hydride (NH3)

45. Question 22 B & C A Ethanol (C2H5OH) B Aluminium fluoride (AlF3)
Which of the substances below is/are ionic?
There may be more than one!
A Ethanol (C2H5OH)
B Aluminium fluoride (AlF3)
C Sodium bromide (NaBr)
D Nitrogen hydride (NH3)
B & C

46. Question 23 A Ethanol (C2H5OH) B Aluminium fluoride (AlF3)
In which of the substances below would the elements bond by sharing electrons?
There may be more than one!
A Ethanol (C2H5OH)
B Aluminium fluoride (AlF3)
C Sodium bromide (NaBr)
D Nitrogen hydride (NH3)

47. Question 23 A & D A Ethanol (C2H5OH) B Aluminium fluoride (AlF3)
In which of the substances below would the elements bond by sharing electrons?
There may be more than one!
A Ethanol (C2H5OH)
B Aluminium fluoride (AlF3)
C Sodium bromide (NaBr)
D Nitrogen hydride (NH3)
A & D

48. Question 24
Copy and complete the diagram to show the electron arrangement for oxygen.
8 +

49. Question 24
Copy and complete the diagram to show the electron arrangement for oxygen.
8 +

50. Question 25
The percentage alcohol in wine depends on the temperature of the fermentation process. Some results are shown on the graph below.
Describe how the temperature of fermentation affects the % alcohol produced.

51. Question 25
The percentage alcohol in wine depends on the temperature of the fermentation process. Some results are shown on the graph below.
Describe how the temperature of fermentation affects the % alcohol produced.
As temperature increases % alcohol decreases