Chemistry Triple AQA

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What is Activation Energy?
Represents the minimum energy needed to break bonds
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What is Temporary hardness caused by?
Hydrocarbons ions
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Why is hard water good?
Good for bones, teeth, and reducing the risk of heart disease
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What is permanent hardness caused by?
Dissolved calcium sulfate
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Why is fluorine and chlorine added to water?
Reduce tooth decay, and prevent diseases
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Uses of Alcohols
Perfume and Fuels
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Going down Group 7 they become...
Less reactive, and have higher boiling and melting points
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Coloured Vapours of a-Fluorine b-Chlorine c-Bromine d-Iodine
a-poisonous yellow gas b-poisonous dense green gas c-poisonous red-brown volatile liquid d-dark grey solid or purple vapour
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Where is Nitrogen obtained from for the Haber Process?
Air
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Pressure of the Haber Process?
200atm
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First 3 Carboxylic Acids
Methonic Acid, Ethanoic Acid and Propanoic Acid
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First 3 Alcohols
Methanol, Ethanol, Propanol
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Alcohols react with sodium to produce?
Hydrogen and Alkoxide
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Temp of The Haber Process
450oC
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Ways to test for Positive ions
Flame test and add NaOH
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Why is fluorine and chlorine bad when too much is added to water?
Chlorine can react to produce toxic by-products, and fluride can cause cancer and bone problems
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What are Esters?
Made of Alcohols and Carboxylic Acids, with a catalyst usually present
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Ethanoic Acid+Ethanol=?
Ethyl Ethnoate+Water
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Where is Hydrogen obtained from for the Haber Process?
Natural Gases
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How do you test for Halides?
Add dilute Nitric Acid, then silver nitrate
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How can Ethanoic Acid be made?
Oxidising Ethanol
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Esters uses
Flavourings, Aromas, Ointments and perfumes
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Other cards in this set

Card 2

Front

What is Temporary hardness caused by?

Back

Hydrocarbons ions

Card 3

Front

Why is hard water good?

Back

Preview of the front of card 3

Card 4

Front

What is permanent hardness caused by?

Back

Preview of the front of card 4

Card 5

Front

Why is fluorine and chlorine added to water?

Back

Preview of the front of card 5
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