C3 Keywords

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  • Created by: Chloe
  • Created on: 14-06-16 11:18
Acid
pH less than 7 and releases hydrogen ions in solution
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Activated carbon
Charcoal that has been broken up to increase the surface area to absorb substances
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Activation Energy
Minimum amount of energy required for a reaction to occur
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Alcohol
Organic compound from a homologous series with the functional group -OH
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Alkali
A base that dissolves in water to release hydroxide ions and have a pH of greater than 7
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Base
An insoluble alkali. Reacts with acids to neutralise
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Bond Energy
The amount of energy needed to break a chemical bond
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Burette
A long thin tube used in a titration experiment
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Calorimeter
Apparatus used for measuring the energy change during a reaction
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Calorimetry
Measuring energy change in a reaction
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Carboxylic Acid
Organic compound from the homologous series with the functional group -COOH
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Catalyst
A chemical compound that speeds up a reaction without being used up itself by lowering the activation energy
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Closed System
Sealed system where no matter can leave or enter
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Concentrated
Containing a large amount of solute
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Confirmatory Test
A chemical test carried out to check the conclusion from the results of another test
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Displayed Formula
A diagram showing the position of atoms in a molecule and the bonds between them
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Endothermic
Products have more energy than reactants. Energy is taken in
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Equilibrium
The point at which the rate of the forward and backwards reactions are the same, meaning there will always be the same number of products and reactants
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Ester
An organic compound that contains the functional group -COO-
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Exothermic
Reactants have more energy than products. Energy is given out to the surroundings. More energy is released to break bonds than put in
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Flame Test
Used to test for metal ions
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Fluoridation
Addition of fluoride ions to drinking water to increase peoples fluoride intake to strengthen teeth
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Functional Group
An atom or group of atoms responsible for most of the chemical reactions of a compound
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Hard water
Water containing calcium or magnesium ions
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Homologous Series
Family of compounds with the same general formula and similar chemical properties
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Hydrogen Ion
Released when an acid dissolves in water
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Hydroxide Ion
Released when an alkali dissolves in water
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Ion-exchange Column
Packed with sodium or hydrogen ions which swap with the calcium or magnesium ions in the hard water to soften water
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Molecular Formula
Chemical formula showing the different elements and the number of atoms of each element in a molecule
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Open System
Matter can escape and enter
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Organic Compounds
Compounds containing carbon
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Oxidising Agent
A chemical compound that will oxidise another compound
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Permanent Hardness
Hardness in water that cannot be removed by boiling as it also contains sulfate
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Pipette
Glass tube for precisely measuring and dispensing liquid
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Reversible Reaction
Reactants make products, products make reactants
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Soft Water
Water containing no dissolved salts. Readily forms a lather with soap
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Specific Heat Capacity
Amount of temperature required to raise the temperature of 1g of a substance by 1 degree
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Strong Acid
Produces a high concentration of hydrogen ions when dissolved in water
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Strong Alkali
Produces a high concentration of hydroxide ions when dissolved in water
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Temporary Hardness
Hardness which can be removed by boiling as it thermally decomposes
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Titration
Method used to find volumes which need tone added to neutralise a substance
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Titre
The volume of solution needed to react exactly with another solution in a titration
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Volatile
Evaporates readily
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Weak Acid
Produces a low concentration of hydrogen ions when dissolved in water
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Weak Alkali
Produces a low concentration of hydroxide ions when dissolved in water
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Other cards in this set

Card 2

Front

Charcoal that has been broken up to increase the surface area to absorb substances

Back

Activated carbon

Card 3

Front

Minimum amount of energy required for a reaction to occur

Back

Preview of the back of card 3

Card 4

Front

Organic compound from a homologous series with the functional group -OH

Back

Preview of the back of card 4

Card 5

Front

A base that dissolves in water to release hydroxide ions and have a pH of greater than 7

Back

Preview of the back of card 5
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