Identifying Substances

Question 1

What colour is the flame for copper

Answer 1

Green

Question 2

What colour is the flame for calcium

Answer 2

Brick red

Question 3

What colour is the flame for lithium

Answer 3

Crimson red

Question 4

What colour is the flame for potassium

Answer 4

Lilac

Question 5

What is the flame colour for sodium

Answer 5

Yellow

Question 6

What is a precipitate

Answer 6

An insoluble solid that come from a solution

Question 7

What is the precipitate colour of aluminium ion

Answer 7

White (dissolves if more sodium hydroxide is added)

Question 8

What is the precipitate colour of calcium ion

Answer 8

White

Question 9

What is the precipitate colour of magnesium ion

Answer 9

White

Question 10

What is the precipitate colour of copper ion

Answer 10

Blue

Question 11

What is the precipitate colour of iron ion (2+)

Answer 11

Green

Question 12

What is the precipitate colour of iron ion (3+)

Answer 12

Brown

Question 13

When solutions of halide are reacted with silver nitrate solutions (with dilute nitric acid) what is produced?

Answer 13

Silver halide precipitates

Question 14

What is the colour of the silver chloride precipitate?

Answer 14

White

Question 15

What is the colour of the silver bromide precipitate?

Answer 15

Cream

Question 16

What is the colour of the silver iodide precipitate?

Answer 16

Yellow