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WorksheetsAQA Trilogy Chemistry Paper 1 Basics (2 of 2)
Total questions: 35
Worksheet time: 18mins
Name
Class
Date
1.
How many elements are in (NH4)2CO3?
a)
4
b)
7
c)
2
d)
3
2.
How many atoms are in (NH4)2CO3?
a)
14
b)
4
c)
13
d)
9
3.
Calculate the Mr of H2O. (H=1, O=16)
a)
3
b)
17
c)
16
d)
18
4.
1.50 moles of concentration of 5.00 mol/dm3. What is the volume in dm3?
a)
7.5
b)
0.3
c)
3.33
5.
Find the anomally in the following results: 33, 28, 16, 29, 31.
a)
33
b)
28
c)
16
d)
29
6.
Find the mean of the following results: 33, 28, 16, 29, 31.
a)
30
b)
31
c)
27
d)
34
7.
Place the metals in order of reactivity (most reactive to least reactive)
a)
Magnesium, iron, copper, gold, potassium
b)
Potassium, gold, magnesium, iron, copper
c)
Magnesium, potassium, iron, copper, gold
d)
Potassium, magnesium, iron, copper, gold
8.
Metal + Acid ->
a)
Salt + Hydrogen
b)
Salt + Water + Carbon dioxide
c)
Salt + Water
9.
Metal oxide + Acid ->
a)
Salt + Hydrogen
b)
Salt + Water + Carbon dioxide
c)
Salt + Water
10.
Metal hydroxide + Acid ->
a)
Salt + Hydrogen
b)
Salt + Water + Carbon dioxide
c)
Salt + Water
11.
Metal carbonate + Acid ->
a)
Salt + Hydrogen
b)
Salt + Water + Carbon dioxide
c)
Salt + Water
12.
Why can lead be extracted by displacement using carbon?
a)
Lead is less reactive than carbon.
b)
Carbon is less reactive than lead.
13.
What does reduction mean?
a)
Loss of oxygen, gain of electrons
b)
Gain of oxygen, loss of electrons
14.
What does oxidation mean?
a)
Loss of oxygen, gain of electrons
b)
Gain of oxygen, loss of electrons
15.
Sodium oxide + sulfuric acid ->
a)
Sodium sulfate + water
b)
Sodium sulfate + hydrogen
c)
Sodium sulfate + water + carbon dioxide
16.
Calcium carbonate + hydrochloric acid ->
a)
Calcium chloride + water
b)
Calcium chloride + hydrogen
c)
Calcium chloride + water + carbon dioxide
17.
Which would you NOT do if you prepared dry crystals of copper sulfate?
a)
Add excess copper oxide
b)
Boil it until dry
c)
Add sulfuric acid to beaker
d)
Filter
18.
What does electrolysis mean?
a)
Breaking down of covalent compounds using electricity.
b)
Breaking down of ionic compounds using electricity.
19.
Which ion goes to the negative electrode and why?
a)
Positive ion, opposites attract.
b)
Negative ion, opposites attract.
20.
Which ion goes to the positive electrode and why?
a)
Positive ion, opposites attract.
b)
Negative ion, opposites attract.
21.
In which situations are ions free to move and can carry charge.
a)
Solid
b)
Liquid (molten)
c)
Aqueous (solution)
22.
What products are produced at which electrode when molten lead bromide (PbBr2) undergoes electrolysis?
a)
Positive electrode= lead ; Negative electrode= bromine
b)
Positive electrode= bromine ; Negative electrode= lead
23.
What products are produced at which electrode when molten aluminium oxide (Al2O3) undergoes electrolysis?
a)
Positive electrode= aluminium; Negative electrode= oxygen
b)
Positive electrode= oxygen ; Negative electrode= aluminium
24.
What ions are in water?
a)
H+ and OH-
b)
H2O
c)
H+ and O2-
25.
What products are produced when aqueous sodium chloride (NaCl) undergoes electrolysis?
a)
chlorine, hydrogen
b)
chlorine, sodium
c)
chlorine, hydrogen, sodium hydroxide
26.
What products are produced when aqueous copper sulfate (CuSO4) undergoes electrolysis?
a)
copper, oxygen, sulphuric acid
b)
copper, sulphur
27.
What temperature change would you expect in an exothermic reaction?
a)
Increase
b)
Decrease
28.
What temperature change would you expect in an endothermic reaction?
a)
Increase
b)
Decrease
29.
What does activation energy mean?
a)
The minimum amount of energy needed for particles to react.
b)
The maximum amount of energy needed for particles to react.
30.
Define exothermic reaction.
a)
Gives out energy to the surroundings.
b)
Takes in energy from the surroundings.
31.
Define endothermic reaction.
a)
Gives out energy to the surroundings.
b)
Takes in energy from the surroundings.
32.
Choose an exothermic reaction.
a)
thermal decomposition
b)
ice packs for injuries
c)
combustion
33.
Choose an endothermic reaction.
a)
thermal decomposition
b)
hand warmers
c)
combustion
34.
Calculate the temperature change if the initial temperature is 23°C and the final temperature is 18°C.
a)
23
b)
18
c)
51
d)
5
35.
Why does anything conduct electricity?
a)
Charged particles can move
b)
Charged particles can flow throughout the structure
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