Edexcel Chemistry Unit 1 Past Papers
IAS • WCH11/01
Foundations of chemistry: formulae and moles, atomic structure and the Periodic Table, bonding and structure, and an introduction to organic chemistry covering alkanes and alkenes.
Every Unit 1 question paper we hold, from 2019 to 2026, with its mark scheme and examiner report where available. Open any PDF in a new tab, or work through the topics below before you sit a full paper.
| Year & Session | Code | Title | Resources |
|---|---|---|---|
| Loading… | |||
What Unit 1 covers
- Topic 1: Formulae, Equations and Amount of Substance
Atoms and moles, empirical/molecular formulae, balanced equations, reacting masses, gas volumes, solutions and titrations.
- Topic 2: Atomic Structure and the Periodic Table
Sub-atomic particles, isotopes, mass spectrometry, electron configuration, ionisation energies and Periodic trends.
- Topic 3: Bonding and Structure
Ionic, covalent and metallic bonding; shapes of molecules and ions; electronegativity and polarity; structure–property links.
- Topic 4: Introductory Organic Chemistry and Alkanes
Nomenclature, isomerism, types of reaction and mechanisms; alkanes, combustion, free-radical substitution and crude oil.
- Topic 5: Alkenes
Bonding in alkenes, geometric isomerism, electrophilic addition, mechanisms and addition polymerisation.