IS_Unit2_Checkpoint 2.7_E

Which of the following water purification method(s) can remove large insoluble impurities (e.g. mud and sand)?

(1) Sedimentation

(2) Filtration

(3) Distillation

• A. (1) only

• B. (2) only

• C. (1) and (2) only

• D. (1), (2) and (3)

Which of the following water purification method(s) can remove small insoluble impurities?

(1) Sedimentation

(2) Filtration

(3) Distillation

• A. (2) only

• B. (1) and (2) only

• C. (2) and (3) only

• D. (1), (2) and (3)

Which of the following water purification method(s) can remove soluble impurities?

(1) Sedimentation

(2) Filtration

(3) Distillation

• A. (3) only

• B. (1) and (3) only

• C. (2) and (3) only

• D. (1), (2) and (3)

Which of the following water purification method(s) can remove microorganisms?

(1) Sedimentation

(2) Filtration

(3) Distillation

• A. (2) only

• B. (3) only

• C. (1) and (3) only

• D. (1), (2) and (3)

Leo tries to use the set-up shown below to remove red food colouring from a beaker of water.

(a) What is the water purification method Leo is using?

• A. Sedimentation

• B. Filtration

• C. Distillation

Leo tries to use the set-up shown below to remove red food colouring from a beaker of water.

(b) Leo has quickly found that food colouring cannot be removed from water with this purification method. Why?

• A. This method works because the food colouring pass through the pores on the filter paper.

• B. This method works because the food colouring cannot pass through the pores on the filter paper.

• C. This method does not work because the food colouring passes through the pores on the filter paper.

• D. This method does not work because the food colouring cannot passes through the pores on the filter paper.

Leo tries to use the set-up shown below to remove red food colouring from a beaker of water.

(c) Which purification method can remove food colouring from water?

• A. Sedimentation

• B. Filtration

• C. Distillation

• D. None of the above