Chemical tests

Question 1

Flame test: crimson

Answer 1

Lithium

Question 2

Flame test: yellow

Answer 2

Sodium

Question 3

Flame test: lilac

Answer 3

Potassium

Question 4

Flame test: orange-red

Answer 4

Calcium

Question 5

Flame test: green

Answer 5

Copper

Question 6

NaOH test: white (redissolves)

Answer 6

Alumimium

Question 7

NaOH test: white

Answer 7

Calcium or magnesium

Question 8

NaOH test: blue

Answer 8

Copper(II)

Question 9

NaOH test: green

Answer 9

Iron(II)

Question 10

NaOH test: brown

Answer 10

Iron(III)

Question 11

BaCl test: white precipitate

Answer 11

Sulfate

Question 12

Limewater test: cloudy

Answer 12

Carbon dioxide

Question 13

Acid added: bubbles given off

Answer 13

If they test positive for CO2, then carbonate

Question 14

Silver nitrate test: white

Answer 14

Chloride

Question 15

Silver nitrate test: cream

Answer 15

Bromide

Question 16

Silver nitrate test: yellow

Answer 16

Iodide

Question 17

How to conduct halide test

Answer 17

Add nitric acid, then silver nitrate. Observe precipitate colour.

Question 18

How to conduct sulfate test

Answer 18

Add hydrochloric acid, then barium chloride. Observe for precipitate.

Question 19

How to conduct carbonate test

Answer 19

Add an acid. Collect gas given off and bubble through limewater. Observe for cloudiness.

Question 20

Flame test: sodium

Answer 20

Yellow

Question 21

Flame test: magnesium

Answer 21

Blinding

Question 22

Flame test: calcium

Answer 22

Orange-red

Question 23

Flame test: lithium

Answer 23

Crimson

Question 24

Flame test: potassium

Answer 24

Lilac

Question 25

Flame test: copper

Answer 25

Green

Question 26

Sodium hydroxide test: aluminium

Answer 26

White (redissolves)

Question 27

Sodium hydroxide test: calcium

Answer 27

White

Question 28

Sodium hydroxide test: magnesium

Answer 28

White

Question 29

Sodium hydroxide test: copper

Answer 29

Blue

Question 30

Sodium hydroxide test: iron(II)

Answer 30

Green

Question 31

Sodium hydroxide test: iron(III)

Answer 31

Brown