Chemical reactions

Question 1

XY - X+Y and more

Answer 1

Decomposition

Question 2

Soluble or insoluble form precipitates

Answer 2

Insoluble

Question 3

What happens in a precipitate reaction

Answer 3

2 solutions are mixed they change partners for 3 new combinations- soluble pair the spectator ions, insoluble pair form precipitate

Question 4

X + CY- XY + C

Answer 4

Displacement reaction, x us higher in reactivity series therefore displaces C

Question 5

Iron is what colour solution

Answer 5

Green

Question 6

Copper is what colour in solution

Answer 6

Blue

Question 7

Sulfur is what colour in solution

Answer 7

Yellow

Question 8

Cu forms what colour precipitate

Answer 8

Blue

Question 9

Fe2+ forms a what. Olive precipitate

Answer 9

Green

Question 10

Fe 3+ forms what colour precipitate

Answer 10

Orange

Question 11

What colour precipitate does Iodine form

Answer 11

Yellow

Question 12

What colour precipitate does Ag

Answer 12

Purple

Question 13

What colour precipitates do all the rest of them form

Answer 13

White

Question 14

Iron sulfate is what colour solution in displacement reactions

Answer 14

Pale green

Question 15

When mg displaces iron sulfate what colour does the solution turn

Answer 15

Yellow/ orange

Question 16

When iron displaces copper sulfate what colour does the solution turn

Answer 16

Surface of ions Red/Orange. blue colour Changes to green

Question 17

What forms on metal when it is displaced most times

Answer 17

A black deposit

Question 18

What colour is the solution before a displacement reaction most of the time

Answer 18

Clear colourless liquid

Question 19

X+ Y - XY

Answer 19

Combination