Metals Higher Test

1)The sentences below describe a chemical reaction.

1-hydrogen, 2-salt, 3-neutral, 4-magnesium
1-hydrogen, 2-neutral, 3-magnesium, 4-salt
1-magnesium, 2-hydrogen, 3-salt, 4-neutral
1-hydrogen, 2-magnesium, 3-salt, 4-neutral
2)Silver does not react with dilute acids.

1-Sodium, 2-zinc, 3-lead, 4-silver
1-zinc, 2-lead, 3-Sodium, 4-silver
1-silver, 2-lead, 3-zinc, 4-Sodium
1-lead, 2-Sodium, 3-silver, 4-zinc
3) Some students want to make some sodium sulphate.

Sulphur and potassium sulphate
Sodium hydroxide and sulphuric acid
Potassium sulphate and sodium chloride
sulphuric acid and sodium chloride
4) When copper is extracted from its ore, it is impure.

Decomposition, displacement
Electrolysis, neutralisation
Redox, neutralisation
Electrolysis, redox
5.1) What is the brown layer which coats lead when it is put into copper nitrate solution?

Copper
Copper nitrate
Lead nitrate
magnesium nitrate
5.2) What is the black layer which coats magnesium when it is put into lead nitrate solution?

Lead
Lead nitrate
magnesium nitrate
Nitrogen
5.3) Which of the following statements is true?

Both lead and copper displace magnesium from magnesium nitrate solution.
Copper displaces lead from lead nitrate soln and displaces magnesium from magnesium nitrate soln.
Lead displaces magnesium from mag. nitrate soln and copper displaces lead from lead nitrate soln.
Lead displaces copper from copper nitrate soln and magnesium displaces lead from lead nitrate soln.
5.4) Which one of the following shows the reactivities of the three metals, starting with the most re

Magnesium --> Lead --> Copper
Copper --> Lead --> Magnesium
Magnesium --> Copper --> Lead
Lead --> Copper --> Magnesium
6.1) Which of the following do the labels X and Y show?

X shows molten aluminium and Y shows molten ore.
X shows molten aluminium and Y shows molten slag.
X shows molten ore and Y shows molten aluminium.
X shows molten slag and Y shows molten aluminium.
6.2) Cryolite is added to the mixture.....

Because the ore will not melt unless you do
Because the ore then melts more easily
to make the molten ore conduct electricity
to react with impurities in the ore and form a molten slag
6.3) To make aluminium metal, the aluminium oxide in the ore has to be.....

displaced
neutralised
oxidised
reduced
6.4) The process produces a lot of carbon dioxide. This happens when....

The negative electrode takes the oxygen from the aluminium oxide
The negative electrode reacts with the oxygen released there
The positive electrode takes the oxygen from the aluminium oxide
The positive electrode reacts with the oxygen released there
7.1) Which one of these reactions inside the furnace is called oxidation?

Carbon dioxide --> carbon monoxide
carbon monoxide --> Carbon dioxide
iron oxide --> iron
limestone --> slag
7.2) Which one of these reactions inside the furnace is called reduction?

carbon --> carbon dioxide
Carbon dioxide --> carbon monoxide
carbon monoxide --> Carbon dioxide
limestone --> slag
7.3) Which substance is mainly responsable for reducing iron oxide?

carbon
Carbon dioxide
Carbon monoxide
oxygen
7.4) Which one of the follwoing words cannot be used to describe the reaction which actually produces

neutralisation
displacement
oxidation
reduction
8.1) Which reaction in the blast furnace is important for the energy it releases?

Carbon + oxygen
carbon dioxide + carbon
carbon monoxide + iron oxide
the decomposition of limestone
8.2) The waste gases from the furnace contain mainly...

carbon dioxide and carbon monoxide
carbon dioxide and nitrogen
carbon monoxide and nitrogen
carbon monoxide and air
8.3) What reaction producesmolten waste in the furnace?

Coke + acid impurities
limestone + acid impurities
limestone + alkaline impurities
limestone + slag
8.4) During the process of extracting iron from its ore...

Iron atoms gain electrons and form ions
Iron atoms lose electrons and form ions
Iron ions gain electrons and form atoms
Iron ions lose electrons and form atoms
9.1) What do the labels X and Y on the diagram show?

X shows a chlorine atom and Y shows a neutral lithium atom
X shows a chlorine ion and Y shows a lithium ion
X shows a neutral lithium atom and Y shows a chlorine atom
X shows a lithium ion and Y shows a chlorine ion
9.2) What happens at the positive electrode?

negative ions gain electrons to become neutral atoms
neutral atoms gain electrons to become negative ions
positive ions gain electrons to become neutral atoms
negative ions lose electrons to become neutral atoms
9.3) What happens at the negative elctrode?

Neutral lithium atoms become lithium ions
lithium ions become neutral lithium atoms
Neutral chlorine atoms become chloride ions
chloride ions become neutral chlorine atoms
9.4) Which of the follwoing terms does *not* apply to the overall process of extracting lithium from

decomposition
displacement
electrolysis
redox

     

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