CC2A Mixtures Flashcards
1
Q
What is a mixture
A
Contains 2 or more elements or compounds that are not chemically combined together
The chemical properties of each susbstance in the mixture are unchanged
2
Q
What is a pure substance
A
A single element or compound, not mixed with any other substance
3
Q
How can you use melting point data to distinguish between pure substances and mixtures
A
Pure substances have a sharp exact melting point whereas mixtures melt over a range of temperatures since they consist of several elements / compounds
