Separation of Substances

1.

Multiple Choice

30 sec

1 pt

What happens in an evaporation dish?

Water stays with the mixture.

Water becomes a solid.

Water turns into water vapor and is no longer in the dish.

More water appears.

2.

Multiple Choice

30 sec

1 pt

The technique of conveying clean liquid without disturbing the sediment is known as?

Decantation

Sedimentation

Condensation

Sublimation

3.

Multiple Choice

30 sec

12 pts

The method used to separate chaff from the grain by wind or blowing air is called

winnowing

decantation

sedimentation

saturated solution

4.

Multiple Choice

30 sec

1 pt

How can I get salt out of water after it has dissolved and formed a solution?

Pour it out through a screen.

You can't. It's dissolved, it's gone.

Let the water evaporate, salt will remain

Pour it through a filter

5.

Multiple Choice

30 sec

5 pts

Solid solutes dissolve faster when it is

Stirred

Not Stirred

6.

Multiple Choice

30 sec

1 pt

The process of converting a liquid condition to a gaseous state when heated is known as?

Condensation

Sublimation

Evaporation

Sedimentation

7.

Multiple Select

30 sec

1 pt

What are the three common states of matter?

solid

liquid

gas

water

8.

Multiple Choice

30 sec

12 pts

which type of separation is this

evoporation

condensation

sedmentation

9.

Multiple Choice

30 sec

1 pt

If the impurities are larger then which separation method is used?

[Assume that the impurities are not always magnetic]

Magnetic Seperation

Winnowing

Sieving

All of the above

10.

Multiple Choice

3 mins

1 pt

In this mixture, which of the following will be the solute?

The water in the glass

The glass that holds the final mixture

The solution containing both powder and water

The powder on the spoon

11.

Multiple Choice

30 sec

1 pt

Which is an example of a solution?

Chex Mix

Mixed fruit

Lemonade

milk and cereal

12.

Multiple Choice

30 sec

12 pts

The process by which an insoluble solid is seperated from a liquid is called

magnetisim

sieving

winnowing

filtration

13.

Multiple Choice

30 sec

12 pts

which type of separation is this

stirring

solubility

decantation

14.

Multiple Choice

30 sec

1 pt

Temperature has an effect on the speed a solid dissolves in water.

True

False

15.

Multiple Choice

30 sec

1 pt

If a mixture contains magnetic impurities, then which separation method(s) is/are used?

Magnetic Seperation

Sieving

Winnowing

All of the above

16.

Dropdown

45 sec

1 pt

The method by which stalks are beaten to separate grain seeds are called (a)

Threshing

Winnowing

Sieving

Hand Picking

17.

Drag and Drop

1 min

1 pt

Salt is obtained from seawater by the process of (a)

evaporation

Decantation

Sedimentation

Hand Picking

18.

Fill in the Blank

30 sec

1 pt

A mixture of salt and water can be separated by_________

19.

Fill in the Blank

1 min

1 pt

What is a mixture?

20.

Multiple Choice

30 sec

1 pt

SEA WATER IS A MIXTURE OF

WATER AND COMMON SALT

WATER AND SEVERAL SALTS

WATER AND OXYGEN

21.

Multiple Choice

30 sec

1 pt

Iron and copper screws could be separated using a magnet because

iron is magnetic, copper is not

copper is magnetic, iron is not

neither metal is magnetic

copper screws are heavier than iron and fall off the magnet

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