Pure Substances & Mixtures Flashcards

All 3 cards in this deck

What is a pure substance in chemistry?

A single element or compound, containing only one type of substance.

What does 'pure' usually mean in everyday use?

A substance that is natural or has had nothing added to it. e.g. 'pure' orange juice is chemically a mixture.

What does melting point data tell you about a sample that melts over a range of temperatures?

It is impure (a mixture). A pure substance has a sharp, single melting point.