Question

what are some pure substance

Answer 1

http://chemistry.about.com/od/matter/f/What-Are-Examples-Of-Pure-Substances.htm

Examples of pure substances include tin, sulfur, diamond, water, pure sugar (sucrose), table salt (sodium chloride) and baking soda (sodium bicarbonate).

Tin, sulfur and diamond are examples of pure substances which are chemical elements. All elements are pure substances.
Water, sugar, salt and baking soda are pure substances which are chemical compounds. Chemical compounds also are pure substances.