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
Using Resources
Corrosion and its prevention
- 3 things to know
- Paper 2
Overview
What corrosion is, why iron needs both air and water to rust, barrier coatings such as grease, paint and electroplating, aluminium's oxide layer, sacrificial protection and galvanising, why tin fails once scratched, and rusting experiments.
What you need to know
Answer each one before you reveal it.
Your recallNot started
Key term
Which two substances must both be present for iron to rust?
Key term
Explain why an iron nail sealed in a tube of dry air does not rust.
Questions from this subtopic
Each one with the model answer underneath.
- 1
What is corrosion?
Model answer
The destruction of a material by chemical reactions with substances in its environment.
- 2
Rusting is the corrosion of which metal?
Model answer
Iron.
- 3
Which two substances must both be present for iron to rust?
Model answer
Air and water.
- 4
Explain why an iron nail sealed in a tube of dry air does not rust.
Model answer
Water is also needed for rusting and there is none present in the tube.
- 5
How does painting an iron gate prevent it from rusting?
Model answer
The paint forms a barrier that stops air and water reaching the iron underneath.
- 6
Name three coatings that protect a metal by acting as a barrier.
Model answer
Grease, paint and a layer of another metal applied by electroplating.
Other ways to work this
The same content, four other ways.
What is inside Levo
Six ways to work the same material.
Every question in Using Resources, on a schedule.
Attempt a question from memory, write the correct version, then attempt it again. Levo records the jump between your first attempt and your last, and brings each question back on the day you are due to forget it.
Or £46 a year, about £3.83 a month. Cancel anytime.