pure substance
electron
mixture
phase
2007-08-17 06:28:09 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
yes, oxygen is a pure substance. but "physical means" and "broken down" don't mix. "broken down" more an indication of chemical means.
2007-08-17 06:38:49 · answer #1 · answered by Carborane 6 · 0⤊ 1⤋
Pure substance
2007-08-17 13:33:32 · answer #2 · answered by Anonymous · 0⤊ 1⤋
A pure substance. (Every Element is a Pure substance).
(Someone asks, "What is a substance" ?
Elements, Compounds and Mixtures are made up of 'The Substances of Matter'
Elements are Substances (Matter) that cannot be broken down by into simpler substances by Chemical means.
Compounds are Chemical combinations of Elemental Substances (Matter) in definite proportions, and can only be broken down by Chemical means... Chemical Reactions, Electrolysis...etc.
Mixtures are formed from Physical Combination of different materials (forms of Matter), and have no definite proportion. They can be separated (broken down) by Mechanical means...Filtration, Distillation, Solution ...etc.
2007-08-18 00:30:37 · answer #3 · answered by Norrie 7 · 0⤊ 1⤋
Pure substance :)
2007-08-17 13:34:33 · answer #4 · answered by Anonymous · 0⤊ 1⤋
pure substance
2007-08-17 13:31:56 · answer #5 · answered by nyphdinmd 7 · 0⤊ 1⤋
I see that your respondents thus far have all said, "pure substance," but what is "substance?"
2007-08-17 13:39:23 · answer #6 · answered by Cognitive Dissident ÜberGadfly 3 · 0⤊ 1⤋
It is considered to be an "Element", as found on the Periodic Table of Elements. which can be viewed here:
http://periodic.lanl.gov/default.htm
2007-08-17 13:38:16 · answer #7 · answered by xhawkx 3 · 0⤊ 1⤋