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Nat 3 KU ___ PS ___
8
2
Uddingston Grammar School
Nat 3/4 Chemistry
Unit 3 Sub-Topic a:
Metals and alloys
Nat 4 KU ___ PS ___
4
6
Nat 3
1. The use of a metal depends on its properties.
(a)
Complete the table to show the property of the metal which makes
it suitable for each use.
Choose your answer from the following.
conducts heat
low density
conducts electricity
1PS
(b) Most metals in the Earth’s crust are found combined with other
elements.
What term is used to describe naturally occurring compounds of
metals?
1KU
2. Silver and gold are used to make jewellery.
Identify the two statements which are true for both silver and gold.
You may wish to use the data booklet to help you.
2KU
3. Batteries are used in a range of items. A battery is a number of cells
joined together.
Give two disadvantage in using a battery rather than mains
electricity.
2KU
4. Bridges made from iron need to be protected to stop them from
rusting.
(a)
(b)
(c)
What effect would rusting have on the strength of an iron bridge?
1KU
State one method that could be used to protect the iron bridge
from rusting.
1KU
The rate of rusting increases if an iron bridge comes into contact
with sea water.
Why does this happen?
1KU
(d) An experiment was set up to investigate how iron rusts when it is
joined to other metals. Rust indicator turns blue when iron rusts.
Suggest a name for metal X.
1PS
NAT4
5. Which of the following cells would produce the highest voltage?
(You may wish to use the data book.)
1PS
6.
In the cell shown above, electrons flow through
A.
B.
C.
D.
The
The
The
The
solution from the tin to zinc
solution from the zinc to tin
connecting wire from the tin to zinc
connecting wire from zinc to tin
1KU
7. Most metals are found combined in the Earth’s crust and have to be
extracted from compounds.
Place the following metals in the correct space in the table.
lead
aluminium
You may wish to use the data booklet to help you.
Metal
Method of Extraction
Electrolysis of molten compound
Heat with carbon
1PS
8. Four cells were made by joining copper, iron, tin and zinc to silver.
The voltages are shown in the table.
Which line in the table shows the voltage of the cell containing
copper joined to silver?
(You may wish to use the data booklet to help you.)
1PS
9. Which ion gives the blue colour with ferroxyl indicator?
A.
B.
C.
D.
H+(aq)
OH-(aq)
Fe2+ (aq)
Fe3+ (aq)
1KU
10. Which of the following methods can give both physical and sacrificial
protection to iron?
A
B
C
D
painting
greasing
tin-plating
galvanising
1KU
11. The voltage obtained when different pairs of metal strips are
connected in a cell varies and leads to the electrochemical series.
Using the apparatus below, a student investigated the
electrochemical series. Copper and four other metal strips were
used in this investigation.
The results are shown.
(a)
(b)
(c)
Which of the metals used is highest in the electrochemical
series?
1PS
Which two of the metals used would produce the highest
voltage when connected in a cell?
1PS
What would be the reading on the voltmeter if both strips of
metal were copper?
1PS
12.
Titanium is an important metal used in aircraft manufacture.
It can be produced from titanium chloride as shown.
2Mg(s) + TiCl4(l)  2MgCl2(s) + Ti(s)
Name the type of chemical reaction represented by the equation.
End of Test
1KU