cc2 Flashcards
1
Q
what is a pure substance
A
something that is made up of any one element or compound
2
Q
what is a mixture?
A
when there are two or more elements or compounds, not chemically bonded
3
Q
what is the mobile phase for paper chromatography
A
the solvant
4
Q
what is the stationary phase in paper chromatography
A
the paper
5
Q
how would you know if something was a pure substance, when using chromatography
A
there would be only be one spot
6
Q
how can you identify a substance usind paper chromatography
A
compare the Rf value with known values
7
Q
give three stages, used to make waste and ground water portable
A
sedimentation filtration chlorination
8
Q
how can seawater be made potable
A
distillation
