Flashcards
CHEMISTRY MODULE 1.3
Cards in this deck (33)
- 1What is the process of reduction?Extracting metals out of their ore by displacing oxygen carbon (Blast Furnaces)
- 2What are the two main methods of extracting copper from copper rich ores?Smelting and Electrolysis.
- 3What is smelting?Heating the copper ore very strongly to produce impure copper (Crude Copper).
- 4How do we purify the impure copper??Electrolysis
- 5How does electrolysis work?The positive ions in the solution are attracted to the negative electrode where they gain two electrons to become a copper atom again.
- 6What is another way that copper could be purified?by displacement using scrap iron.
- 7What is an alternative way to find copper in a low grade copper ore?Phytomining
Or
Bioleaching - 8What is pytomining?It is using plants to produce copper.
- 9Why are plants used?Because the absorb the copper solution through their roots.
- 10How do we get the copper out of the plants?Burn the plants to get the ash, which contains the copper.
- 11What is Bioleaching?Using bacteria to produce a leachate solution.
- 12How does it work?The leachate solution contains the metal compounds.
- 13How is Iron originally found?Iron Oxide.
- 14How do we extract Iron from its ore?Using Carbon in a Blast Furnace to get pure Iron.
- 15Why does Iron from the Blast Furnace have limited uses?Because its only 96% iron and contains impurities (Mostly Carbon)
- 16What are the properties of impure Iron?Brittle and Not easily compressed.
- 17Why is Pure Iron useful?Because when in molten form it can be run into different moulds and cast into different shapes.
- 18How is Aluminium extracted?By Electrolysis
- 19Why is Aluminium resistant to corrosion?Because it reacts with the oxygen in the air to form a layer of Aluminium Oxide, which the protects the aluminium.
- 20Why can't Aluminium be extracted by reduction?Because Aluminium is more reactive than Carbon so it isn't displaced.
- 21Why isn't Titanium Extracted by Reduction?Because the Carbon reacts with the titanium making it very Brittle.
- 22How is Titanium Extracted?By reacting it with more reactive metals, such as Sodium Or Magnesium.
- 23What are Alloys?They are a mixture of metals.
- 24Name a use of Low Carbon Steel and why it is used.Car Bodies
Or
Airplanes
Because they can be easily shaped. - 25Name a use of High Carbon Steel and why that is used.Knife Blades
Or
High Strength Wires
Because they are harder and much more brittle than low carbon steel. - 26Name a use of Stainless Steel and why it is used.Cutlery
Or
Pans/Pots
Because they are resistant to corrosion. - 27What is Stainless Steel made up of?Chromium And Nickel
- 28Why are Alloys used over normal Metals?Because they are stronger and have more use. Also because metals like gold and iron are too soft when they are pure so they are mixed with a small amount of similar elements to make them harder and more durable for everyday use.
- 29Why are Alloys Stronger/Harder?Because the different sized atoms distort the layers in the structure, making it difficult for the atoms to slide over each other.
- 30What is a property of a transitional metal?They are good conductors of heat and electricity
Or
They can be bent or hammered into shape. - 31What are these properties useful for?Structural materials, such as wires or pipes.
- 32Name a use of Titanium and why it is used.Vehicle engines
Or
Radioactive containments.
Because they are highly un reactive. - 33Name a use of Aluminium and why it is used.Tin Foil
Or
Bikes
Because it is a light metal that doesn't corrode.
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- ORES REDUCTION EXTRACTING COPPER LOW GRADE COPPER ORES EXTRACTING IRON ALUMINIUM TITANIUM ALLOYS
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- Iona Diack
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