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Ionic bonding: Bonding structure and the properties of matter: Chemistry: GCSE (9:1)

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Formation of metal ions Atoms lose outer electrons Metals Elements that form positive ions Formation of non-metal ions Atoms gain electrons Charge on non-metal ions negative Group 1 ions charge +1 Group 2 ions charge +2 Group 6 ions charge -2 Group 7 ions charge

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Metals and non-metals: Chemistry: WJEC: GCSE (9:1)

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Metals Elements which form positive ions Non-metals Elements which do not form positive ions Metals position on periodic table on the left hand side Non-metals position on periodic table

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Metals and Redox: Chemical Changes: Chemistry: GCSE (9:1)

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Metal An element that forms positive ions pH of metal oxide Basic Non-metal Does not form positive ions pH of non-metal oxide Acidic Reduction in terms of oxygen Loss of oxygen Oxidation in terms of oxygen Gain of oxygen Oxidation in terms of electrons Loss of electrons

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Naming Chemicals: Atomic structure and the periodic table: Chemstry: GCSE (9:1)

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H - Hydrogen He - Helium Fe - Iron N - Nitrogen Na - Sodium F - Fluorine Li - Lithium C - Carbon CO2 - carbon dioxide

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Reaction profile diagrams: Energy Changes: Chemistry: GCSE (9:1)

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Requirements for a reaction to take place Particles must collide, with sufficient energy Activation energy Minimum amount of energy required to start a chemical reaction Reaction profile diagram A graph which shows the change in energy of a chemical reaction Products The new substances formed by a chemical change

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Separating techniques: Atomic structure and the periodic table: Chemstry: GCSE (9:1)

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Mixture A combination of two or more substances that are not chemically joined. Filtration Separates insoluble solids from liquids. Crystallisation The formation of crystals by cooling a saturated solution Simple distillation Used to separate a liquid from a solution

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Transition elements: Atomic structure and the periodic table: Chemistry: GCSE (9:1)

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Transition elements are found In the middle block of the periodic tableRe Physical properties of transition elements Hard, high melthing points, strong and dense. Chemical properties of transition elements Slow/no reaction with oxygen, water and halogens Charges on transition metal ions Form positive ions often with the ability to form more than one ion

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Types of structure: Bonding structure and the properties of matter: Chemistry: GCSE (9:1)

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Ion An atom or group of atoms that has lost or gained electrons and therefore a positive or negative charge. Polyatomic ion An ion that is made of more then one atom Metal ion an atom which has lost electrons forming a positive ion Non-metal ion an atom which has gained electrons forming negative ions. Covalent bond a shared pair of electrons Molecule two or more atoms held together by covalent bonds Metallic bonding Positively charged metal ions are surrounded by delocalised outer ...

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UK government essay plans questions and answers passed 100%

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Evaluate how far the power of the executive has been undermined by constitutional reforms since 1997 PARA 1 - P1 - P1 - devolution Blair, as part of his democratising reforms, enabled referendums to be held on devolving legislative powers to Scotland, Wales and NI. This has undermined the power of the executive by granting other assemblies powers that used to be held at westminster. Westminster now has no say on certain areas of legislation in devolved assemblies. 1997 resulted in an overwh...

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Topic 1 essay plans 100% PASSED

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Evaluate the view that the franchise should be further extended 1) Responsibility without rights For - Pay tax, marry, join army - Corbyn said that we cannot deny these people their full rights as citizens (could be seen as a political move as the youth are more likely to vote labour) - Conservatives dispute this but it is contradictory as 15 year olds voted in their leadership election Against - Eventhough they have these rights, most people do not use them - Their educational developm...

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