flame test Flashcards
1
Q
what is the colour of sodium flame
A
yellow
2
Q
what is flame colour of lithium
A
red
3
Q
what is the flame colour of potassium
A
lilac
4
Q
what is the flame colour of calcium
A
orange - red
5
Q
what is the flame colour of barium
A
green
6
Q
what is the flame colour of copper
A
blue-green
7
Q
why platinum is sutiable metal
A
high melting point
does not colour flame
does not react with oxygen
8
Q
why should the wire be cleaned
A
to remove any substances that may affect the colour
9
Q
why luminous buses burner not rustable
A
difficult to see colour produced by the substance
10
Q
Flame test method
A
Dip wire loop into conc. hydrochloric acid, burn in flame until no colour is seen, dip into conc. hydrochloric acid and then into solid sample or dip into solution of sample.
