ch8 Flashcards
(5 cards)
1
Q
explain how paper chromatography separates substances
A
solvent moves through paper
carries substances different distances
which depends on their attraction for the paper and the solvent
2
Q
what is a formulation?
A
a mixture designed as an useful product
3
Q
what is the test and result for chlorine gas?
A
damp litmus paper-bleaches
4
Q
explain how paper chromatography separates the dyes in a food colouring
A
dyes distributed differently between the stationary and mobile phase so dyes move up the paper at different rates
5
Q
what is the test for oxygen gas?
A
glowing splint if it it relights oxygen is present
