What is a pure substance?

Answer

A pure substance is a single substance that is free from contamination. Ethanol and honey are examples of pure substances.

Water is a pure substance as long as it has not been contaminated. Hard water is not a pure substance because it has been contaminated by magnesium, calcium and other minerals.

Some educators define a pure substance as one that is made up of only one type of building block. Under this definition, elements and compounds are the only materials that would qualify as pure substances. Although compounds are made up of two or more elements, they are pure substances because their composition never changes.

Q&A Related to "What is a pure substance?"
Diamond, for one. Also, gold, silver, lead, mercury, to name just a few.
http://wiki.answers.com/Q/What_substance_is_a_pure...
( ′pyu̇r ′səb·stəns ) (chemistry) A sample of matter, either an element or a compound, that consists of only one component with definite physical
http://www.answers.com/topic/pure-substance
What Are Examples of Pure Substances? A. pure substance. or chemical substance is a material that has constant composition (is homogeneous) and has consistent properties throughout
http://chemistry.about.com/od/matter/f/What-Are-Ex...
Examples: Table salt (sodium chloride, NaCl) sugar (sucrose, C12H22O11) water
http://www.chacha.com/question/what-a-example-of-a...
1 Additional Answer
Ask.com Answer for: what is pure substance
A substance is a form of matter that has a constant chemical composition and characteristic properties. It cannot be separated into its several components without breaking its chemical bonds.
Water, gold, table salt and sugar are all substances.
About -  Privacy -  Careers -  Ask Blog -  Mobile -  Help -  Feedback  -  Sitemap  © 2015 Ask.com