Starter quiz
- Where are more reactive metals positioned on the reactivity series?
- At the top. ✓
- In the middle.
- At the bottom.
-
- What is the product of a reaction between sodium and oxygen?
- sodium oxide ✓
- soium carbonate
- sodium hydroxide
- sodium chloride
-
- What is scientific term for a rock that contains metals or metal compounds from which we can extract metal?
- stones
- compounds
- ores ✓
- alloys
- leachates
-
- Which of the following statements about the position of metals in the reactivity series are correct?
- Potassium is more reactive than zinc. ✓
- Gold is more reactive than aluminium.
- Magnesium is more reactive than the non–metal carbon. ✓
- Copper is less reactive than the non–metal carbon. ✓
- Iron is more reactive than the non–metal carbon.
-
- Which substance has been oxidised in the following reaction? Magnesium + iron oxide → magnesium oxide + iron.
- magnesium ✓
- iron
- iron oxide
- magnesium oxide
-
- Which substance has been reduced in this reaction? Magnesium + iron oxide → magnesium oxide + iron.
- magnesium
- iron
- iron oxide ✓
- magnesium oxide
-
Exit quiz
- What is the name for a type of reaction in which a substance loses oxygen or gains electrons?
- 'reduction' ✓
- Which of the following methods can we use to extract platinum?
- Using electrolysis to separate platinum from a platinum compound.
- Reduction by carbon as platinum is more reactive than carbon.
- Eeduction by carbon as platinum is less reactive than carbon.
- No chemical extraction is necessary; platinum is found as an uncombined element. ✓
-
- Which statements about the following reaction are correct? Zinc oxide + carbon → carbon dioxide + zinc.
- Zinc oxide has been oxidised by carbon.
- Zinc oxide has been reduced by carbon. ✓
- Carbon is oxidised. ✓
- Carbon is reduced.
-
- In the following reaction, which substance has been oxidised and which substance has been reduced? Lithium + copper oxide → lithium oxide and copper.
- Lithium has been reduced and copper oxide has been oxidised.
- Lithium has been reduced and copper oxide has been reduced.
- Lithium has been oxidised and copper oxide has been oxidised.
- Lithium has been oxidised and copper oxide has been reduced. ✓
-
How can aluminium be extracted from aluminium compounds in an alumumium ore?- Using electrolysis. ✓
- Reduction by carbon.
- It is found in Earth as an uncombined element.
-
- Why can we extract zinc from zinc ore by heating with carbon, but not to extract magnesium from magnesium ore?
- Magnesium is more reactive than carbon. ✓
- Carbon can displace magnesium from a magnesium compound.
- Carbon can displace zinc from a zinc compound. ✓
- Zinc is more reactive than carbon.
- Carbon cannot displace magnesium from a magnesium compound. ✓
-
Worksheet
Loading worksheet ...
Presentation
Loading presentation ...
Video
Lesson Details
Key learning points
- Unreactive metals are often found in the earth as pure metal.
- Metals that are less reactive than carbon can be extracted by heating their oxides with carbon.
- A metal oxide is said to be reduced by carbon because the metal oxide loses oxygen.
- Carbon is oxidised when it reacts with a metal oxide because it gains oxygen to form carbon dioxide.
Common misconception
Thinking that oxidation and reduction are only to do with the loss and gain of oxygen.
Oxidation is the loss of electrons or the gain of oxygen. Reduction is the gain of electrons or loss of oxygen.
Keywords
Metal oxide - A metal oxide is a compound containing metal and oxygen atoms chemically bonded together.
Oxidation - Oxidation is a type of reaction in which a substance gains oxygen or loses electrons.
Reduction - Reduction is a type of reaction in which a substance loses oxygen or gains electrons.
Ore - An ore is a rock that contains metals or metal compounds. Metal can be extracted from its ore.
Redox reaction - A redox reaction is a reaction where both reduction and oxidation occur.
+