tests Flashcards
1
Q
test for oxygen
A
glowing splint is relight
2
Q
test for co2
A
aqueous solution of calcium hydroxide(lime water).Co2 is bubbled through it and the lime water turns cloudy
3
Q
test for chlorine
A
damp blue litmus paper is bleached and turns white
4
Q
hydrogen gas
A
lighted splint pops (squeaky)
5
Q
what happens to a substances melting and boiling point when it becomes impure
A
lowers melting point and increases boiling point
6
Q
rf value formula
A
retention factor=distance moved by substance/distance moved by solvent
7
Q
what is the mobile phase
A
solvent
8
Q
stationary phase
A
the paper
9
Q
A
