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Chemical substance - Wikipedia

en.wikipedia.org/wiki/Chemical_substance

A chemical substance is a form of matter that has constant chemical composition and ... A common example of a chemical substance is pure water; it has the same properties and the same ratio of hydro...

What Is a Pure Substance? (Chemistry Definition)

chemistry.about.com/od/chemistryglossary/g/Pure-Substance-Definition.htm

This is the definition of pure substance along with examples of things that are pure substances (and ones that aren't).

What is a pure substance in science? | Reference.com

www.reference.com/science/pure-substance-science-9745a6a9b7b16cb5

A pure substance is any single type of material that has not been contaminated by another substance. Water is considered a pure substance if the water contains  ...

Pure Substance in Chemistry: Definition, Properties & Examples ...

study.com/academy/lesson/pure-substance-in-chemistry-definition-properties-examples.html

May 3, 2015 ... This lesson introduces the concept of the pure substance. The impact of purity on the physical and chemical properties are discussed and ...

www.ask.com/youtube?q=Pure Substance&v=Ze0kG4yeFS0
Apr 21, 2014 ... A basic introduction to pure substances. ... Lab 11.1 - Pure Substance or Mixture? - Duration: 4:49. Sara Tsioles 2,956 views. 4:49. What is a ...
www.ask.com/youtube?q=Pure Substance&v=88MBCyiaPSM
Mar 4, 2014 ... Here's a video from the Evaluate section in the "Pure Substances and Mixtures" 5E Lesson. This section aims at reviewing and evaluating ...

Pure substance | Article about pure substance by The Free Dictionary

encyclopedia2.thefreedictionary.com/pure substance

A sample of matter, either an element or a compound, that consists of only one component with definite physical and chemical properties and a definite ...

ChemTeam: Mixtures and Pure Substances

www.chemteam.info/Matter/Mixtures&PureSubstances.html

A mixture is one in which two or more pure substances retain their chemical identity. For example, if you dissolve some sugar into water, the sugar molecules  ...

ChemTeam: Elements and Compounds

www.chemteam.info/Matter/ElementsAndCompounds.html

The classification is developed in more detail in Mixtures and Pure Substances. The portion above is repeated with two additional questions concerning mixtures  ...

Is wood a pure substance? - Quora

www.quora.com/Is-wood-a-pure-substance

A material is pure only in its atomic, or molecular states; pure gold (contains only gold atoms), pure water ( contains only water molecule, H2O).

Answer
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.
More Info

What Is a Pure Substance? - Chemistry - About.com

chemistry.about.com

You may have wondered what is meant by the term 'pure substance'. Here's what a pure substance is and how you can tell if something is pure or not.

How to Distinguish Pure Substances and Mixtures - dummies

www.dummies.com

Chemists can classify matter as solid, liquid, or gas. But there are other ways to classify matter, as well — such as pure substances and mixtures. Classification is  ...

What is a pure substance? - Chemistry for kids

www.chemistryforkids.net

A pure substance is a substance that cannot be separated by physical means. eg . filtration, evaporation, distillation or chromatography. Examples of pure ...