Chemistry › Section A · Essential ideas › Topic A.3
Physical and chemical properties
How do you tell real gold from fool's gold, or know whether cooking an egg made something new? Chemists answer with properties: some you can observe while the substance stays itself, and some show up only when it turns into something else.
In this topic
- Telling substances apart
- Physical properties
- Physical changes
- Chemical properties
- Chemical changes and their clues
- Worked example: physical or chemical?
- Extensive and intensive properties
- Worked example: identifying a metal
- Metals, nonmetals and metalloids
- Properties on a warning label
- Common mistakes to avoid
- Key takeaways
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