Tests for positive and negative ions

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What colour will the flame turn to when lithium is put in it?
Crimson
1 of 18
What colour will the flame turn to when sodium is put in it?
Orange
2 of 18
What colour will the flame turn to when potassium is put in it?
Lilac
3 of 18
What colour will the flame turn to when calcium is put in it?
Red
4 of 18
What colour will the flame turn to when barium is put in it?
Green
5 of 18
What coloured precipitate forms when Calcium reacts with sodium hydroxide?
White
6 of 18
What coloured precipitate forms when Copper(II) reacts with sodium hydroxide?
Blue
7 of 18
What coloured precipitate forms when Iron(II) reacts with sodium hydroxide?
Green
8 of 18
What coloured precipitate forms when Iron(III) reacts with sodium hydroxide?
Brown
9 of 18
What coloured precipitate forms when Aluminium reacts with sodium hydroxide?
White at first but then redissolves in excess NaOH to form a colourless solution.
10 of 18
What coloured precipitate forms when Magnesium reacts with sodium hydroxide?
White
11 of 18
How do you test for carbonates?
Add acid to a carbonate and this gives a salt, water and carbon dioxide.Bubble the carbon dioxide through limewater and if it turns cloudy, carbon dioxide is present. This shows that a carbonate is present.
12 of 18
How do you test for halide ions?
Add dilute nitric acid followed by silver nitrate solution.
13 of 18
What coloured precipitate of chloride is formed during the halide test?
White
14 of 18
What coloured precipitate of bromide is formed during the halide test?
Cream
15 of 18
What coloured precipitate of iodide is formed during the halide test?
Yellow
16 of 18
How do you test for sulfate ions?
add dilute HCL followed by barium chloride solution.
17 of 18
What coloured precipitate of barium sulfate is formed if a sulfate was present?
White
18 of 18

Other cards in this set

Card 2

Front

What colour will the flame turn to when sodium is put in it?

Back

Orange

Card 3

Front

What colour will the flame turn to when potassium is put in it?

Back

Preview of the front of card 3

Card 4

Front

What colour will the flame turn to when calcium is put in it?

Back

Preview of the front of card 4

Card 5

Front

What colour will the flame turn to when barium is put in it?

Back

Preview of the front of card 5
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