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26 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What is the order of reactivity? |
Potassium Sodium Lithium Calcium Magnesium Alumnium Zinc Iron Tin Copper |
10 |
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Which metals react with water? |
Potassium Sodium Lithium Calcium |
4 |
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Which metals react with acid? |
Potassium Sodium Lithium Calcium Magnesium Aluminium Zinc Iron Tin |
9 |
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Which metals react with oxygen? |
Potassium Sodium Lithium Calcium Magnesium Aluminium Zinc Iron Tin Copper |
10 |
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In the order of reactivity, which metals are most reactive and with are least? |
The top are the most and the bottom are the least |
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What are the three ways in which metals can be extracted? |
Heat alone, heat with carbon and electricity |
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What is the general word equation for extracting metals using heat alone? |
Metal Oxide -> Metal + Oxygen |
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What is the general word equation for extracting metals using heat and carbon? |
Metal Oxide + Carbon -> Metal + Carbon Dioxide |
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Describe how a blast furnace works |
•Raw materials go in the top and waste gases are released •The furnace is heated uses blasts of very hot air •The molten iron is then extracted from the furnace |
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Describe how electrolysis works |
•positively and negatively charged metal ions are free to move •they carry the current and allow conduction •the positive ions are attracted to negative electrode and gain electrons to become metal atoms •and the other way round to become non- metal atoms |
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What is corrosion of metals? |
The surface of the metal reacting |
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What needs to be present in order for metal to corrode? |
Oxygen and water |
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What is feroxyl indicator used for? |
To show when rusting has occurred |
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What happened when feroxyl indicator is added to ;
iron (II) sulfate? sodium hydroxide an iron nail |
yellow -> blue yellow -> pink yellow -> blue |
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How can corrosion be prevented? |
painting/greasing coating in zinc attaching to a more relative metal which will corrode first coating in a thin layer of another metal |
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What is galvanising |
Coating metal on zinc to prevent corrosion |
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What is electroplatinb |
Coating a metal in a think layer of another metal to prevent corrosion |
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What is sacrificial protection? |
Attaching a metal to a more reactive one which will corrode first to prevent the other metal from corrosion |
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What is an alloy? |
A mixture of two or more elements where at least one is a metal. |
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What differences do alloys have to pure elements? |
They have different physical properties |
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What is the (1) property and (2) use of aluminium? |
1) low density, doesn’t corrode 2) bodies of planes |
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What is the (1) property and (2) use of copper? |
1) good conductor, unreactive 2) electrical wires |
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What is the (1) property and (2) use of gold? |
1) good conductor, doesn’t react with water 2) electrical connections on circuit boards |
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What is the (1) property and (2) use of steel? |
1) cheap and strong 2) building material |
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Give some examples of smart materials and briefly explain what they do |
Thermochromic materials (change colour when change of temperature ) Electroluminescent materials (give out light) Photochromic materials (change colour when change of light) |
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What are some uses of Kevlar? |
Lining of bicycle wheels Ping pong paddles Back plates of phones Body armour Fire protective clothing |
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