Flame And Precipitation Tests

Question 1

Lithium flame test

Answer 1

Red

Question 2

Sodium flame test

Answer 2

Yellow/orange

Question 3

Potassium flame test

Answer 3

Lilac

Question 4

Calcium flame test

Answer 4

Orange/red

Question 5

Barium flame test

Answer 5

Light green

Question 6

Chromium flame test

Answer 6

green

Question 7

Copper flame test

Answer 7

Blue/green

Question 8

Carbonate test

Answer 8

add dilute acid and test for carbon dioxide

Question 9

nitrate test

Answer 9

add aluminium foil and sodium hydroxide, then test for ammonia

Question 10

sulfate test

Answer 10

add dilute nitric acid, then barium nitrate, a white ppt should form (barium sulfate)

Or replace with HCl and BaNO3

Question 11

sulfite test

Answer 11

add a dilute acid (HCl) and potassium manganate(VII), should turn from purple to colourless

Question 12

chloride test

Answer 12

add dilute nitric acid, then add silver nitrate, should form white ppt

Question 13

bromide test

Answer 13

add dilute nitric acid then add silver nitrate, should form cream ppt

Question 14

iodine test

Answer 14

add dilute nitric acid, then add silver nitrate, should form yellow ppt

Question 15

Aluminium NaOH test

Answer 15

white ppt, soluble in excess

Question 16

ammonium NaOH test

Answer 16

no ppt, but ammonia is formed

Question 17

Calcium NaOH test

Answer 17

white ppt, insoluble in excess

Question 18

Chromium NaOH test

Answer 18

green ppt, soluble in excess

Question 19

copper NaOH test

Answer 19

light blue ppt, insoluble in excess

Question 20

Iron (II) NaOH tset

Answer 20

green ppt, insoluble in excess

Question 21

Iron (III) NaOH test

Answer 21

brown ppt, insoluble in excess

Question 22

Zinc NaOH test

Answer 22

white ppt, soluble in excess

Question 23

Aluminium NH3 test

Answer 23

white ppt, insoluble in excess

Question 24

Ammonium NH3 test

Answer 24

no reaction

Question 25

Calcium NH3 test

Answer 25

Little bit of white ppt

Question 26

Chromium NH3 test

Answer 26

grey green ppt, partially soluble in excess

Question 27

copper NH3 test

Answer 27

light blue ppt, soluble in excess, creating a deep blue solution

Question 28

Iron (II) NH3 test

Answer 28

Green ppt, insoluble in excess

Question 29

Iron (III) NH3 test

Answer 29

Brown ppt, insoluble in excess

Question 30

Zinc NH3 test

Answer 30

white ppt, soluble in excess

Question 31

Ammonia test

Answer 31

damp red litmus paper turns blue

Question 32

carbon dioxide test

Answer 32

bubble through limewater, from clear to milky

Question 33

chlorine test

Answer 33

bleaches any litmus paper, paper turns white

Question 34

hydrogen test

Answer 34

lighted splint makes a squeaky pop sound

Question 35

oxygen test

Answer 35

glowing splint relights

Question 36

sulfur dioxide

Answer 36

using aqueous potassium manganate(VII), from purple to colourless