C4f: Transition Elements

This item covers some properties and chemistry of the transition elements and introduces thermal decomposition and precipitation. The experiments on thermal decomposition allow opportunities to collect and analyse science data, working as an individual or in a group, to analyse results and present the information using scientific conventions and symbols. 

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What are copper and iron?
Transition elements
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What are transition elements? What do they have?
Metals, they have metallic properties.
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Give two properties of metals.
They conduct electricity and heat.
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What is thermal decomposition?
A reaction in which a substance is broken down into at least two other substances by heat.
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What is the test for Carbon Dioxide?
If limewater is shaken with a sample of the gas produced, the limewater turns milky. This shows that the gas is carbon dioxide.
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What is precipitation?
A reaction between solutions that makes an insoluble solid.
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What colour is copper compound?
Blue
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What colour is Iron (II) compound?
Light Green
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What colour is Iron (III) compound?
Orange/Brown
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What are iron and nickel are iron often used as?
Catalysts
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When is iron used as a catalyst?
In the Haber process.
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When is nickel used as a catalyst?
In the manufacture of margarine.
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What is produced in the thermal decomposition of Iron, Copper, Manganese and Zinc carbonate? What happens to the physical appearance of the original carbonate?
A metal oxide and carbon dioxide. It changes colour.
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Word equation for the thermal decomposition of: Copper Carbonate
Copper Carbonate = Copper Oxide + Carbon Dioxide
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Word equation for the thermal decomposition of: Zinc Carbonate
Zinc Carbonate = Zinc Oxide + Carbon Dioxide
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Word equation for the thermal decomposition of: Iron Carbonate
Iron Carbonate = Iron Oxide + Carbon Dioxide
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Word equation for the thermal decomposition of: Manganese Carbonate
Manganese Carbonate = Manganese Oxide + Carbon Dioxide
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Balanced Symbol equation for the thermal decomposition of: Copper Carbonate
CuCO˅3 = CuO + CO˅2
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Balanced Symbol equation for the thermal decomposition of: Iron Carbonate
FeCO˅3 = FeO + CO˅2
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Balanced Symbol equation for the thermal decomposition of: Manganese Carbonate
MnCO˅3 = MnO + CO˅2
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Balanced Symbol equation for the thermal decomposition of: Zinc Carbonate
ZnCO˅3 = ZnO + CO˅2
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Complete the sentence: Transition Metal ________ are insoluble in water
Transition Metal Hydroxides are insoluble in water
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When will we get a displacement reaction?
If a solution of any soluble transition metal compound is mixed with sodium hydroxide solution.
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Describe what happens when a solution of any soluble transition metal compound is mixed with sodium hydroxide solution.
The sodium is the more reactive metal, and displaces the transition metal from its compound. The transition metal hydroxide is produced as a result. As this is insoluble in water it appears as a solid in the liquid. This is a precipitation reaction
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What precipitate does Cu^2+ give?
Blue
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What precipitate does Fe^2+ give?
Grey/green
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What precipitate does Fe^3+ give?
Orange/Brown
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What is the balanced symbol equation for copper sulfate when mixed with sodium hydroxide solution?
Cu^2+ + 2OH^- → Cu(OH)˅2
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What is the balanced symbol equation for Iron (II) sulfate when mixed with sodium hydroxide solution?
Fe^2+ + 2OH^- → Fe(OH)˅2
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What is the balanced symbol equation for Iron (III) sulfate when mixed with sodium hydroxide solution?
Fe^3+ + 3OH^- → Fe(OH)˅3
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What is the word equation for Copper Sulfate when mixed with sodium hydroxide solution?
Copper sulfate solution + sodium hydroxide solution = Copper hydroxide
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What is the word equation for Iron (II) sulfate when mixed with sodium hydroxide solution?
Iron (II) sulfate solution + sodium hydroxide solution = Iron (II) hydroxide
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What is the word equation for Iron (III) sulfate when mixed with sodium hydroxide solution?
Iron (III) sulfate solution + sodium hydroxide solution = Iron (III) hydroxide
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Other cards in this set

Card 2

Front

What are transition elements? What do they have?

Back

Metals, they have metallic properties.

Card 3

Front

Give two properties of metals.

Back

Preview of the front of card 3

Card 4

Front

What is thermal decomposition?

Back

Preview of the front of card 4

Card 5

Front

What is the test for Carbon Dioxide?

Back

Preview of the front of card 5
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