Chemistry: every topic explained
30 short explanations for Chemistry, one per syllabus topic: the idea, the rules, the common mistake and a worked example. Each one links to our notes and a free test on that topic.
Atomic structure and the periodic table
- Atoms, elements, compounds and mixtures
- Atomic models, subatomic particles, isotopes and electronic structure
- The periodic table: development, Group 0, Group 1 and Group 7
- Properties of transition metals
Bonding, structure, and the properties of matter
- Ionic, covalent and metallic bonding
- How bonding and structure are related to properties
- Structure and bonding of carbon; nanoparticles
Quantitative chemistry
- Conservation of mass and relative formula mass
- Moles, reacting masses and limiting reactants (HT)
- Yield and atom economy
- Concentrations of solutions and volumes of gases
Chemical changes
Energy changes
The rate and extent of chemical change
- Calculating and measuring rates of reaction
- Factors affecting rate, collision theory and catalysts
- Reversible reactions and dynamic equilibrium
Organic chemistry
- Crude oil, alkanes, fractional distillation and cracking
- Alkenes, alcohols and carboxylic acids
- Synthetic and naturally occurring polymers
Chemical analysis
Chemistry of the atmosphere
- Composition and evolution of the Earth's atmosphere
- Greenhouse gases, climate change and atmospheric pollutants
Using resources
- Using the Earth's resources and obtaining potable water
- Life cycle assessment and recycling
- Using materials
- The Haber process and NPK fertilisers
Ask about this
Type what you are stuck on. The helper finds the explanation, worked examples and the notes to read, free and instant.