Question

What Distinguishes a substance from a mixture?

Answer 1

substance is pure, where as mixture, as it's name suggested is several substance mixed up

Answer 2

technique used to identify components of a mixture? then it is chromatography

Answer 3

for example, silicon dioxide is a substance whereas sand is a mixture

Answer 4

@asmagul could use distillation

Answer 5

pure substance differ in it vapour pressure with its mixture[roults law]

Answer 6

Are Substances compounds then and mixtures is not a compound?

Answer 7

substance could be a compound or an element, mixture is definitely not a compound

Answer 8

yes u can use it as it separates components of a mixture but 4 identification it is chromatography.fractional distillation is used to purify crude oil

Answer 9

yes mixture isnt a compound but contains different compounds or elements

Answer 10

my teach performed how to use FD to separate Alcohol from water

Answer 11

yes we can use FD for many separations i was only giving an example

Answer 12

I'll be learning about NMR and Infrared Spectroscopy soon, could them be used for ID?

Answer 13

pure substance is a compound and a mixture isnt