https://www.quora.com/Is-oxygen-a-mixture-or-pure-substance

A mixture is two or more substances mixed together. Since oxygen atoms or oxygen gas is made up of only one substance it is not a mixture it is ...

https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Map%3A_Introductory_Chemistry_(Tro)/03%3A_Matter_and_Energy/3.04_Classifying_Matter_According_to_Its_Composition

May 10, 2019 ... Explain the difference between a pure substance and a mixture. ... water is a compound composed of the elements hydrogen and oxygen.

https://www.siyavula.com/read/science/grade-10/classification-of-matter/02-classification-of-matter-03

Any material that is not a mixture, is called a pure substance. ... for example, is a compound that is made up of two hydrogen atoms for every one oxygen atom.

http://www.softschools.com/examples/science/pure_substances_examples/476/

A pure substance is any single type of material that are made of only one type of atom or only ... Two pure substances mixed together are known as a mixture.

https://courses.lumenlearning.com/introchem/chapter/substances-and-mixtures/

A chemical substance is composed of one type of atom or molecule. ... it always has the same properties and the same ratio of hydrogen to oxygen whether it is ...

https://www.dummies.com/education/science/chemistry/how-to-distinguish-pure-substances-and-mixtures/

All matter can be classified as either a pure substance or a mixture. ... For example, water is a compound made up of two elements, hydrogen (H) and oxygen (O) ...

https://learning-center.homesciencetools.com/article/mixtures-compounds/

A pure substance consists of a single element or compound. ... Air is also a mixture, containing just the right amounts of nitrogen, oxygen, and other gases for life ...

https://www.ck12.org/book/CBSE_Chemistry_Book_Class_IX/section/2.8/

Feb 18, 2016 ... Examples of elements include carbon, oxygen, hydrogen, gold, silver ... compound, a mixture consists of more than one chemical substance.

https://www.chem.purdue.edu/gchelp/atoms/elements.html

Elements, Compounds & Mixtures. Elements ... view of the molecules of the compound water (gas phase). Oxygen atoms are red and hydrogen atoms are white.

https://www.youtube.com/watch?v=OHhnm2p5G3o

Aug 5, 2017 ... Pure substances have a constant composition where as a mixture can ... converting into hydrogen and oxygen gas by means of electrolysis.