Chemistry c3

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Name three mineral sources found in Britain.
Coal, salt and limestone.
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Why is excessive salt in the diet bad for you?
It can lead to high blood pressure and other circulatory conditions.
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Name three processes that have been involved in creating Britain's mineral resources.
Mountain building, erosion, sedimentation or dissolving/evaporation.
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How does extracting salt affect the environment?
Dissolving underground salt deposits using water can lead to the ground above subsiding and buildings possibly collapsing. Salt waste can affect plants and animals by drying them up through the process of osmosis.
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Name two processes used to extract salt deposits.
Mining the solid (often called rock salt) and pumping water into the salt deposit and extracting the solution of salt called brine.
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When used as a raw material for the chemical industry, where does sodium chloride come from?
Seawater or underground salt deposits.
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A team of research scientists has developed a new plastic to use for making highly-absorbent nappies.In order to advertise their new substance to companies which manufacture nappies,the scientists need to carry out a life cycle assessment.In a life(f
Making the material, manufacturing the product, using the product, then disposing of the product
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Why is it important that the tests completed in an LCA (life cycle assessment) are repeated by another team of scientists?
To ensure the results are reliable.
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What pH would you expect a solution of lithium hydroxide to have?
13
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Write a word equation showing the reaction between lithium carbonate and hydrochloric acid.
Lithium carbonate + Hydrochloric acid --- Lithium chloride + Carbon dioxide + Water
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Write a symbol equation for the reaction between lithium hydroxide and nitric acid. (HNO ) (finish question and answer)
LiOH + HNO --- LiNO + H O
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What are alkalis used for?
Neutralising acidic soils, making chemicals that bind dyes to cloth, making soaps from fats and oils and making glass.
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Write a word equation showing the reaction between hydrochloric acid and potassium hydroxide.
Hydrochloric acid + Potassium hydroxide --- Potassium chloride + water
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Write a word equation showing the reaction between hydrochloric acid and calcium carbonate
Hydrochloric acid + Calcium carbonate --- Calcium chloride + Water + Carbon dioxide
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Name three products from the electrolysis of brine (salt water).
Hydrogen, chlorine and sodium hydroxide.
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What is meant by the term 'electrolysis'?
Splitting up a liquid or dissolved compound using electricity.
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Sodium hydroxide...
Is an important alkali. It is used to make soaps, detergents, paper and textiles and is also used as a domestic drain cleaner. It is also a corrosive substance.
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Hydrogen...
Is a flammable gas. It is used in processing hydrocarbon fuels, making margarine and making ammonia in the Haber process. It will be used as a clean fuel in the future.
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Chlorine...(finish answer)
Can be used as a bleach. It can be used to kill bacteria in drinking water - this has controlled many diseases in humans around the world. It is also a toxic gas. Some people are concerned about the possible advantages of adding chlorine to water as
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Other cards in this set

Card 2

Front

Why is excessive salt in the diet bad for you?

Back

It can lead to high blood pressure and other circulatory conditions.

Card 3

Front

Name three processes that have been involved in creating Britain's mineral resources.

Back

Preview of the front of card 3

Card 4

Front

How does extracting salt affect the environment?

Back

Preview of the front of card 4

Card 5

Front

Name two processes used to extract salt deposits.

Back

Preview of the front of card 5
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