Chemistry: every topic explained
21 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.
Structure 1: Models of the particulate nature of matter
- The particulate nature of matter
- The nuclear atom
- Electron configurations
- Counting particles by mass: the mole
- Ideal gases
Structure 2: Models of bonding and structure
Structure 3: Classification of matter
- The periodic table: classification of elements
- Functional groups: classification of organic compounds
Reactivity 1: What drives chemical reactions?
Reactivity 2: How much, how fast and how far?
- How much? The amount of chemical change
- How fast? The rate of chemical change
- How far? The extent of chemical change
Reactivity 3: What are the mechanisms of chemical change?
- Proton transfer reactions
- Electron transfer reactions
- Electron sharing reactions
- Electron-pair sharing reactions
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