2007-09-26 16:27:58 · 3 answers · asked by lover2 1 in Science & Mathematics ➔ Chemistry
physical mixture of chemicals does not involve rearrangement of electrons to the structure of the mixed chemicals so that each individual chemical retain its own identity.
chemical reaction occurs whenever the electrons of the mixed chemical rearrange to find a stable state. As such, new substances are formed.
2007-09-26 16:44:16 · answer #1 · answered by pattan 2 · 0⤊ 0⤋
A physical mixture can be seperated by physical means. Such as boiling, crystalization, chromatography.
In a chemical reaction, the components cannot be seperated by physical means, but only by another chemical reaction
2007-09-26 16:30:40 · answer #2 · answered by reb1240 7 · 0⤊ 0⤋
I used to know this things but it's been 15 years so this is the best I can do for the moment!!! just hope it's as simple as needed!!!1
http://209.85.165.104/search?q=cache:WVtA-chcl5oJ:www.squashedfrogs.co.uk/resources/2005/9/reactionsandmixtures.ppt+chemical+reactions+or+mixtures&hl=en&ct=clnk&cd=4&gl=us
http://www.usoe.k12.ut.us/CURR/Science/sciber00/8th/matter/sciber/chemtype.htm
2007-09-26 16:39:45 · answer #3 · answered by joanflre 2 · 0⤊ 0⤋