Gas And Ion Tests

Question 1

Hydrogen

Answer 1

Test - lit splint
Observation - makes a squeaky pop sound

Question 2

Oxygen

Answer 2

Test - Glowing splint
Observation - relights

Question 3

Carbon dioxide

Answer 3

Test - bubble through limewater
Observation - changes from colourless to cloudy

Question 4

Chlorine

Answer 4

Test - damp blue litmus paper
Observation - bleached white

Question 5

Lithium

Answer 5

Colour of flame test- Red (crimson)
Observation - no change

Question 6

Potassium

Answer 6

Colour of flame test - lilac
Observation - no change

Question 7

Sodium

Answer 7

Colour of flame test - orange
Observation - no change

Question 8

Calcium

Answer 8

Colour of flame test - brick red
Observation- white precipitate

Question 9

Copper

Answer 9

Colour of flame test - blue/green
Observation- blue precipitate

Question 10

Aluminium and magnesium

Answer 10

Flame test colour - no colour
Observation - white precipitate

Question 11

Iron (11)

Answer 11

Colour of flame test - no colour
Observation - Green precipitate

Question 12

Iron (111)

Answer 12

Colour of flame test - no colour
Observation- orange / brown precipitate

Question 13

In an ion test what is the solution added to

Answer 13

Sodium hydroxide