Assessment task 2

Question 1

Residue is…

Answer 1

Retained in the filter paper as the particles are too large to fit through the holes in the filter paper.

Question 2

Filtrate is…

Answer 2

Filtrate passes through the filer paper into the flask or beaker.

Question 3

Is soil a pure or impure substance?

Answer 3

Impure

Question 4

Is air pure or impure?

Answer 4

Impure

Question 5

Is water pure or impure?

Answer 5

Pure

Question 6

Is soda water pure or impure?

Answer 6

Impure

Question 7

Is oxygen pure or impure?

Answer 7

Pure

Question 8

Is orange cordial pure or impure?

Answer 8

Impure

Question 9

Is cake mixture pure or impure?

Answer 9

Impure

Question 10

Is blood pure or impure?

Answer 10

Impure

Question 11

Is salty water pure or impure?

Answer 11

Impure

Question 12

Is salt pure or impure

Answer 12

Pure

Question 13

What is distillation?

Answer 13

A process used to purify liquids

Question 14

How do you seperate iron filings and chalk dust?

Answer 14

With a magnet

Question 15

What equipment do you need to seperate salt and water?

Answer 15

Heatproof mat, Bunsen burner, tripod, clay triangle, evaporating dish.

Question 16

What equipment do you need to seperate sand and water?

Answer 16

Tripod, boss head, ring clamp, beaker, filter funnel, filter paper

Question 17

How do you know that a substance is pure?

Answer 17

The particles are all the same

Question 18

How do you know that a substance is a mixture?

Answer 18

The particles are not all the same

Question 19

Is iron a mixture?

Answer 19

No

Question 20

Is aluminium a mixture?

Answer 20

No