Tests

Question 1

Carbon Dioxide

Answer 1

Turns limewater from colourless to cloudy

Question 2

Oxygen

Answer 2

Relighting glowing splint

Question 3

Hydrogen

Answer 3

Squeaky pop test

Question 4

Chlorine

Answer 4

Bleaches damp litmus paper (Turns red before briefly)

Question 5

Water

Answer 5

Anhydrous copper sulfate turns from white/very light blue to blue
or
Anhydrous cobalt chloride would fo from blue to purple/pink

Question 6

Carbonates

Answer 6

Fizz with acid to produce carbon dioxide (CO2 Test)

Question 7

Sulfates

Answer 7

Reacts with barium chloride and will get a thick white percipitate

Question 8

Halide ions

Answer 8

React with silver nitrate and will go: white (Cl-)
Cream (Br-)
Yellow (I-)

Question 9

Double Bond

Answer 9

Decolorisation of Bromine Water

Question 10

Flame Test for Lithium

Answer 10

Flame will go crimson

Question 11

Flame test for calcium

Answer 11

Flame will go Orange/Red

Question 12

Flame test for sodium

Answer 12

Flame will go yellow

Question 13

Flame test for Copper

Answer 13

Flame will go green

Question 14

Flame test for potassium

Answer 14

Flame will go lilac

Question 15

Fe2+ Test for positive ions

Answer 15

Green Precipitate

Question 16

Fe3+ Test for positive ions

Answer 16

Brown precipitate

Question 17

Cu2+ Test for positive ions

Answer 17

Blue Precipitate

Question 18

Ca2+ Test for positive ions

Answer 18

White ppt (insoluble in excess)

Question 19

Mg2+ Test for positive ions

Answer 19

White ppt (insoluble in excess)

Question 20

Al3+ Test for positive ions

Answer 20

White ppt (soluble in excess)