Reactivity Series and Extraction
National 4/National 5
1. Name the type of compound formed when a metal reacts with oxygen.
2. Write a general word equation for what happens when a metal reacts with
oxygen.
3. Write the chemical equation for the reaction between magnesium and
oxygen. Balance the equation.
4. What products are formed when a metal reacts with water.
5. Name two metals which do not react with water.
6. Place the following metals in order of reactivity, most reactive first:
Sodium, magnesium, iron, copper, potassium, lithium, tin
7. Write a word equation for the reaction between a metal and an acid.
8. A gas is produced in the above reaction, how would you test for this gas?
9. Name the products formed when magnesium reacts with hydrochloric acid.
10. Stephen was investigating the reactivity of metals in acid and set up the
apparatus as shown.
(a)
How would Stephen know which metal was the most reactive?
(b)
What gas is causing the bubbles in the test tubes?
(c)
Name two factors which Stephen had to keep the same to ensure a
fair test.
11. Most metals have to be extracted from their ores before they can be used.
Explain the meaning of the term ‘ore’.
12. The first metals like gold and silver were discovered on earth in
prehistoric times, while others like aluminium were only discovered in the
past 200 years.
(a)
Explain why aluminium was not discovered during prehistoric times.
(b)
What does this tell us about the reactivity of gold and silver?
13. Place the following metals in the correct space in the table:
Copper, mercury, aluminium
Metal
Method of Extraction
Using heat alone
Electrolysis of molten ore
Heating with carbon
14.
The apparatus was used to change copper (II) oxide into copper metal.
(a)
Write a word equation for the reaction.
(b)
Write a formula equation for the reaction
(c)
The reaction involves reduction of Cu2+ to copper metal
(i)
Name the reducing agent
(ii)
Name another possible reducing agent
(iii)
Write an ion-electron equation to show the reduction
process.
(d)
The water in the trough was found to be acidic after the reaction.
Explain what has caused it to become acidic.
15. Julia was carrying out experiments on lithium oxide, silver oxide and tin
oxide. The following results were obtained.
Metal Oxide
A
B
C
Heat Alone
No reaction
metal and oxygen
produced
No reaction
Heat with Carbon
No reaction
metal and oxygen
produced
Metal produced
(a)
Name the metal oxides A, B and C
(b)
Why did metal oxide A have no reaction in either experiment?
(c)
How could you extract metal A from its metal oxide?
16. The reactivity of halogens were compared by passing them over heated iron
wool , as shown.
The results were as follows.
Halogen
Chlorine
Bromine
Iodine
(a)
Reaction with heated iron wool
The iron wool glows brightly even
when heat is removed
The iron wool gives an orange glow
but only during heating
The iron wool gives a dull glow, but
only during heating
What would you expect to see when fluorine was passed over the
heated wool?
(b)
What does this experiment indicate about the order reactivity of
the halogens?
17. When a metal is extracted from its ore, metal ions are changed to metal
atoms. Name this type of chemical reaction.