Pearson Edexcel International GCSE Chemistry (4CH1)
Chemistry revision
8 topics across two units. Pick any one to be tested on it, taught it, or to talk it through. This is the course list Zen IQ works from: its tutor, papers and marking all follow it.
Unit 1 4WCH1
- Principles of chemistry Part 1States of matter; elements/compounds/mixtures; separation techniques (distillation, filtration, chromatography); atomic structure; Periodic Table basics; formulae/equations/mole calculations
- Inorganic chemistry Part 1Reactivity series; rusting and prevention; redox; extraction of metals; acids/alkalis/pH scale; titrations; salt preparation
- Physical chemistry Part 1Energetics (exo/endothermic, calorimetry, bond energies)
- Organic chemistry Part 1Hydrocarbons; crude oil and fractional distillation; alkanes; alkenes; cracking
Unit 2 4WCH2
- Principles of chemistry Part 2Ionic bonding; covalent bonding; metallic bonding; electrolysis
- Inorganic chemistry Part 2Group 1 alkali metals; Group 7 halogens; gases in atmosphere; chemical/flame tests
- Physical chemistry Part 2Rates of reaction (collision theory, catalysts); reversible reactions and equilibrium
- Organic chemistry Part 2Alcohols; carboxylic acids; esters; synthetic polymers (addition and condensation)
How Zen IQ helps with Chemistry
Papers written in the Edexcel style for Chemistry, with a mark scheme, marked part by part, crediting an error carried forward the way a real examiner does.
Every topic below turns strong, shaky or weak from your marks and flashcards, so you can see where marks are going. A target test aims straight at the weakest.
Talk a topic through out loud with Zehan or Maya. They answer in a second, you can cut in, and they write it on a board as they explain.
Any topic taught in about four minutes as an animated lesson, or drawn as a mind map where every idea leads to a lesson, a quiz or a call.
Cards that come back just before you would forget them, and study guides in three lengths, ready to print or download for Word.
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