Download Topic 9 HW – Magic Metals 1. The grid shows the names of some

Topic 9 HW – Magic Metals
1. The grid shows the names of some metals.
A.
D.
COPPER
BRASS
B.
MAGNESIUM
E.
SODIUM
C.
ZINC
F.
STEEL
a) Identify the metal which produces the yellow in a street lamp. (You may wish to use page 4 of the data book)
b) Identify the two alloys.
(3 marks)
2. Gold and silver are both used to make jewellery. Identify the statement(s) which are true for both gold and silver.
A.
B.
C.
D.
E.
They are NOT transition metals.
They conduct electricity.
They are found uncombined in the Earth’s crust.
They react with dilute hydrochloric acid.
They are more reactive than copper.
(2 marks)
3. Metals and their compounds take part in many reactions.
A.
B.
C.
D.
Fe2O3 + 3CO
2Mg + SiO2
CuCO3
2Zn + O2
2Fe + 3CO2
2MgO + Si
CuO + CO2
2ZnO
a) Identify the reaction which takes place in the blast furnace.
b) Identify the reaction which produces a non-metal element.
(2 marks)
4. Leia was investigating electrical conductivity. She set up four experiments.
Identify the experiment in which the bulb wouldn’t light.
(1 mark)
5. Wilma investigated the reaction of metals R, S and T with water.
a) Place the metals in order of reactivity (most reactive first).
b) How would Wilma test the gas to show that is was hydrogen?
(2 marks)
6. A simple cell can be made from everyday objects.
a) What will be the direction of electron flow through the wires?
b) What would happen to the voltage if the iron nail was replaced with aluminium foil? You may wish to use
page 7 of the data book to help you.
(2 marks)
7. Write the redox equation for the following reaction:
OXIDATION:
Fe(s)  Fe2+(aq) + 2e-
REDUCTION:
Cu2+(aq) + 2e-
 Cu(s)
(1 mark)
8. Metals can be extracted from their ores by different methods.
a) Copy the table and place the following methods in the correct space in the table.
Reacting with Carbon
METAL
Mercury
Iron
Magnesium
Electrolysis
Heat alone.
METHOD
b) Mercury can be extracted from the ore cinnabar, HgS. Calculate the percentage by mass of mercury in
cinnabar.
(3 marks)
9. Identify the reducing agent in the following reaction:
copper oxide + carbon  copper + carbon dioxide + water
(1 mark)
10. Complete the below reactions to show their products:
(a) metal + water 
+

+
(b) metal + acid
(c) metal + oxygen 
(3 marks)
TOTAL = 20 Marks