mixtures and chromatography Flashcards
1
Q
what are mixtures in chemistry
A
mixtures are easily separated - not like compounds
there is no chemical bond between the different parts of a mixture.
2
Q
how can mixtures be separated
A
physical methods such as filtration, crystallisation, simple distillation, fractional distillation and chromatography.
3
Q
what is air a mixture of
A
gases, mainly nitrogen, oxygen, carbon dioxide and argon
4
Q
what is crude oil a mixture of
A
different length hydrocarbon molecules.
5
Q
what. is chromatography used for
A
this can be used to separate different dyes in an ink( learn chromatography practical, six marker)
