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What is a pure substance?

What is a pure substance?

A pure substance contains only one substance: either one element or one compound. A pure element contains only one type of atom. These atoms may exist individually or bonded together in molecules, such as O2\text{O}_2O2​ or S8\text{S}_8S8​.

2.1.1 Pure substances and melting point data Lesson

  1. GCSE
  2. /Chemistry
  3. /2.1.1 Pure substances and melting point data

Step-by-step lessons on OCR GCSE Chemistry 2.1.1 Pure substances and melting point data. Each one builds up to exam-style questions. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.

Lessons