Which statement correctly describes an impure substance?
A
Melts over a range of temperatures
B
Consists of just one element or compound
C
Has a single, sharp melting point
D
Cannot be separated by physical means
Markscheme
Purity and separating mixtures Questions
46 exam-style questions on OCR GCSE Chemistry Purity and separating mixtures. Each one has a worked solution and a mark scheme showing where the marks go.