Key term
AQA GCSE Chemistry 8462
Atomic Structure and the Periodic Table
Topic overviewAtoms, elements and compoundsWord equations, symbols and balanced equationsMixturesFrom the plum pudding model to the nuclear modelBohr, Chadwick and the modern model of the atomRelative electrical charges of subatomic particlesSize and mass of atomsRelative atomic mass and electronic structureThe periodic tableDevelopment of the periodic tableMetals and non-metalsGroup 0Group 1Group 7Transition metals, and how they differ from Group 1
Bonding, Structure, and the Properties of Matter
Topic overviewChemical bonds, including metallic bondingIonic bondingIonic compoundsCovalent bonding and how it is representedThe three states of matter and changes of statePredicting state, state symbols, and the limits of the particle modelProperties of ionic compoundsProperties of small moleculesPolymers and giant covalent structuresProperties of metals and alloys, and why metals conductDiamond and graphiteGraphene and fullerenesSizes of particles and their propertiesUses of nanoparticles
Chemical Analysis
Chemical Changes
Topic overviewThe reactivity seriesMetal oxides, extraction, and redox in terms of electronsAcids reacting with metals, neutralisation and saltsSoluble saltsThe pH scale and neutralisationTitrationsThe process of electrolysis, and molten ionic compoundsUsing electrolysis to extract metalsElectrolysis of aqueous solutions
Chemistry of the Atmosphere
Topic overviewThe Earth's early atmosphereHow oxygen increased and carbon dioxide decreasedThe gases in today's atmosphere, and which are greenhouse gasesHuman activities which contribute to an increase in greenhouse gases in the atmosphereGlobal climate change and carbon footprintsAtmospheric pollutants from fuels, and their effects
Energy Changes
Organic Chemistry
Topic overviewCrude oil, hydrocarbons and alkanesFractional distillation and petrochemicalsProperties of hydrocarbonsCracking, and testing alkenes with bromine waterWhy cracking is useful, and equations for itStructure and formulae of alkenesReactions of alkenesAlcoholsCarboxylic acidsAddition polymerisationAmino acids, DNA and naturally occurring polymers
Quantitative Chemistry
The Rate and Extent of Chemical Change
Using Resources
Topic overviewUsing the Earth's resources and sustainable developmentProducing potable water in the UKDesalination, and analysing water samplesWaste water treatmentLife cycle assessmentWays of reducing the use of resourcesCorrosion and its preventionAlloys as useful materialsGlass, clay ceramics and polymersComposites, and comparing materialsThe Haber processProduction and uses of NPK fertilisers
Atomic Structure and the Periodic Table
Group 1
- 3 things to know
- Paper 1
Overview
The alkali metals and their single outer electron, their reactions with oxygen, water and chlorine, the alkaline solution formed with water, how and why reactivity increases down the group, and predicting how rubidium reacts with water.
What you need to know
Answer each one before you reveal it.
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Key term
Write the word equation for potassium reacting with water.
Key term
What is produced when sodium burns in chlorine?
Questions from this subtopic
Each one with the model answer underneath.
- 1
What are the elements of Group 1 known as?
Model answer
They are known as the alkali metals.
- 2
How many electrons does a Group 1 atom have in its outer shell?
Model answer
One.
- 3
Why do the alkali metals share characteristic chemical properties?
Model answer
Because every one of their atoms has a single outer electron, which is lost to form a 1+ ion.
- 4
What is formed when lithium reacts with oxygen?
Model answer
Lithium oxide is formed.
- 5
Describe what is seen when a small piece of sodium is added to water.
Model answer
It floats, melts into a ball and fizzes as it moves across the surface, giving off hydrogen and leaving an alkaline solution of sodium hydroxide.
- 6
Write the word equation for potassium reacting with water.
Model answer
Potassium + water → potassium hydroxide + hydrogen.
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