Chemistry Key Terms

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  • Created by: Emilyy11
  • Created on: 22-04-14 16:24
Diffusion
The spreading out of particles in a gas or liquid.
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Isotope
Atoms that have the same atomic number, but different mass numbers (same protons, different electrons).
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Covalent bonding
A pair(s) of electrons is shared between two atoms.
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Oxidation
Gain of oxygen, loss of electrons.
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Reduction
Loss of oxygen, gain of electrons.
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Ionic bonding
Bonding in which there is a transfer of electrons from one atom to another to produce ions.
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Metallic bonding
An array of positive ions in a 'sea' of delocalised electrons.
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Catalyst
A substance that speeds up a chemical reaction but is not used up.
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Acid rain
water and oxygen in the atmosphere react with sulfur dioxide to produce sulfuric acid, or with various oxides of nitrogen.
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Electrolysis
A chemical change caused by passing an electric current through a compound which is either molten or in solution.
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Electrolyte
A substance that undergoes electrolysis.
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Anode
The positive electrode.
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Cathode
The negative electrode.
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Exothermic
A reaction that gives out heat.
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Endothermic
A reaction that absorbs energy (often heat).
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Reversible reaction
A reaction where the products of the reaction can react to produce the original reactants.
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Rusting
Iron rusts in the presence of oxygen and water.
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Hydrocarbon
A compound of carbon and hydrogen only.
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Homologous series
A family of compounds with similar properties because they have similar bonding.
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Alkane
A saturated hydrocarbon.
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Alkene
An unsaturated hydrocarbon,
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Cracking
Large hydrocarbon molecules are broken down into smaller ones.
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Polymerisation
The joining of many monomers to make a polymer,
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Other cards in this set

Card 2

Front

Atoms that have the same atomic number, but different mass numbers (same protons, different electrons).

Back

Isotope

Card 3

Front

A pair(s) of electrons is shared between two atoms.

Back

Preview of the back of card 3

Card 4

Front

Gain of oxygen, loss of electrons.

Back

Preview of the back of card 4

Card 5

Front

Loss of oxygen, gain of electrons.

Back

Preview of the back of card 5
View more cards

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