Science;Chemistry.
2006-12-04 10:01:50 · 8 answers · asked by toribkeith 1 in Science & Mathematics ➔ Chemistry
A pure substance, has to made entirely of atoms of the same element (derived from the periodic table), a mixture is one or more elements mixed together, if they are bonded, it becomes a compound for example Calcium Chloride CaCL
2006-12-04 10:04:26 · answer #1 · answered by mutated_demon_monkey 1 · 0⤊ 0⤋
Mixture And Pure Substance
2016-11-10 08:48:19 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Water is a substance even though it is made up of 2 different elements. A substance means it has the same composition all the way through. If you take a glass of water and compare a spoonful at the top to a spoonful at the bottom, there is no difference because the actual atoms bond. It's H(2)O, not H and O.
In contrast, a mixture is not completely bonded together. Even if it appears to be completely the same, if you were to separate the molecules from the other molecules, they would be individually different. Take chocolate milk. The chocolate does not bond to the milk, so even if it looks completely smooth, it's not really a "substance" in the sense that it is just one thing. It's chocolate and milk.
A mixture can't be a substance because a substance cannot be separated by any physical means. You can't break down water into hydrogen and oxygen with your hands.
2006-12-04 10:16:34 · answer #3 · answered by alexandertheseventeenth 1 · 0⤊ 0⤋
Um...because it's a mixture? A mixture is two or more things mixed together. A pure substance is all one thing.
2006-12-04 10:04:34 · answer #4 · answered by Amy F 5 · 0⤊ 0⤋
A mixture is two or more substances that are mixed together, without a chemical reaction occurring.
For example, if I pour vinegar and water into a glass, there is no difference in the way it looks, but there are two separate entities--water and vinegar.
2006-12-04 10:05:35 · answer #5 · answered by itsacoaster 2 · 0⤊ 0⤋
Because a mix is of two pure substances. If you don't mix then you have two pure substances.
2006-12-04 10:04:14 · answer #6 · answered by Cold Fart 6 · 0⤊ 0⤋
Because a mixture is made up of two or more pure substances o.0.... thanks for the two points...
2006-12-04 10:04:36 · answer #7 · answered by ? 4 · 0⤊ 0⤋
Because a basic mixture can still be separated by various processes
having fun yet?
2006-12-04 10:04:38 · answer #8 · answered by xrionx 4 · 0⤊ 0⤋