A chemically pure substance contains [ ] and has a [ ].
A chemically pure substance contains only one substance and has a variable composition.
A chemically pure substance contains two or more substances and has a fixed composition.
A chemically pure substance contains two or more substances and has a variable composition.
A chemically pure substance contains only one substance and has a fixed composition.
Methods of separating and purifying substances Flashcards
Flashcards for Edexcel GCSE Chemistry Methods of separating and purifying substances, covering the key terms, definitions and equations you need to recall for Paper 1 and Paper 2. 23 cards, matched to the Edexcel GCSE Chemistry (1CH0) specification. Recall questions account for roughly 40% of marks at GCSE Chemistry, so these target the marks you can secure before the paper starts.