SQ7 Chapter 5 - Separating Mixtures

Question 1

When do you have a saturated liquid?

Answer 1

When no more solute can be dissolved in a solvent.

Question 2

What filtration technique would you use to separate a mixture of oil and water?

Answer 2

A separating funnel.

Question 3

When an insoluble substance sinks to the bottom of a liquid, it is called…

Answer 3

a sediment

Question 4

What is another name for the pure liquids that come out of the distillation process?

Answer 4

Distillate

Question 5

Taking sustainability into consideration, which separation method would be the best way to get pure water from salt water?

Answer 5

Solar distillation.

Question 6

Why do platelets need to be moved every 12 hours?

Answer 6

So they don’t clump together.

Question 7

What is the purpose of the water condenser in the distillation process?

Answer 7

To turn steam back into liquid.

Question 8

Adding more solvent to a solution will make it…

Answer 8

More dilute.

Question 9

In an aqueous solution, the solvent is…

Answer 9

water

Question 10

Of the four parts that make up blood, which of the following fight diseases?

Answer 10

White blood cells.

Question 11

A separating funnel is used to separate…

Answer 11

Two liquids.

Question 12

What do you need to do to a glass of salt water to make it more concentrated?

Answer 12

Add more salt.

Question 13

Fizzy drink is an aqueous solution. Which of the following is not an aqueous solution?

Salt water
Blood
Olive Oil
Cordial

Answer 13

Olive oil.

Question 14

When you have a mixture that contains solid particles which are too small to settle or be filtered out, it is called…

Answer 14

A colloid.

Question 15

Which of the following would not be a solute in a can of fizzy drink?

Food colouring
Carbon dioxide
Sugar
Water

Answer 15

Water

Question 16

Which separation technique do scientists use to separate red and white blood cells from the plasma and platelets?

Answer 16

Centrifuging

Question 17

A mixture of two liquids spread through each other that don’t react or form layers is called…

Answer 17

An emulsion

Question 18

Which of the following techniques would be appropriate to separate a mixture of sand and water?

Putting it in a centrifuge
Using a separating funnel
Boiling the water
Gravity filtration

Answer 18

Gravity Filtration

Question 19

The Red Cross does not use all of the blood we donate to them. Which part of the donation is discarded?

Answer 19

White blood cells.