Question 1

Direction: Choose the letter of the correct answer.
Which of the following is a heterogeneous mixture in nature?

Accepted Answer

sand  and shells

Answer

pebbles

Answer

seawater

Answer

air

Question 2

These are examples of homogeneous mixtures except ________.

Accepted Answer

salt and pepper

Answer

coffee and hot water

Answer

soy sauce and vinegar

Answer

fish sauce and vinegar

Question 3

Which of the following statement is true?

Accepted Answer

We can identify the components of a heterogeneous mixture.

Answer

Homogeneous mixture has a non-uniform appearance.

Answer

The components of a heterogeneous mixture is uniform in appearance.

Answer

Homogeneous mixture is not evenly mixed.

Question 4

Which of the following mixtures has a uniform appearance?

Accepted Answer

orange juice

Answer

pork menudo

Answer

mixed nuts

Answer

oil and water

Question 5

Which of the following is a homogeneous mixture in nature?

Accepted Answer

air

Answer

saline solution

Answer

corn soup

Answer

alcohol

Question 6

Why does sugar dissolved when mixed with water?

Accepted Answer

Sugar particles spread evenly in water.

Answer

Sugar particles evaporated in the atmosphere.

Answer

Sugar particles are absorbed by water.

Answer

Sugar particles settle at the bottom.

Question 7

Which is the solvent in a cup of milk?

Accepted Answer

water

Answer

sugar

Answer

sugar

Answer

milk powder

Question 8

Which of the following describes solubility?

Accepted Answer

The ability of something to dissolve in a liquid

Answer

The ability of liquid to change color

Answer

The speed of pouring a liquid out of a container

Answer

The time it takes for something to settle at the bottom of a liquid

Question 9

What is known as the universal solvent?

Accepted Answer

water

Answer

soy sauce

Answer

vinegar

Answer

acetone

Question 10

Which of the following describes immiscible liquids?

Accepted Answer

Immiscible liquids do not mix.

Answer

Immiscible liquids mixed evenly.

Answer

The solute dissolves thoroughly in solvent.

Answer

The solute settles at the bottom.

Question 11

What kind of mixture is formed when larger particles settle out when   left undisturbed?

Accepted Answer

suspension

Answer

solution

Answer

colloid

Answer

solvent

Question 12

Why is there a need to shake a medicine prepared as suspension before drinking it?

Accepted Answer

To mix in the powdered drug that may have settled at the bottom.

Answer

To turn it into colloid.

Answer

To turn it into a solution.

Answer

To make sure that flavors are mixed

Question 13

Which is an example of colloid?

Accepted Answer

blood

Answer

alcohol

Answer

tea

Answer

soil

Question 14

Aerosols are liquid or solid particles in a gas. Which is a natural aerosol?

Accepted Answer

clouds

Answer

none of them

Answer

mayonnaise

Answer

gelatin

Question 15

How would you differentiate a solution from a suspension?

Accepted Answer

Solution is consistent and uniform in appearance and composition while suspension is a cloudy mixture in which some of its solutes end up settling at the bottom.

Answer

Solution has bigger and unevenly distributed particles while     suspension is a cloudy mixture in which some of its solutes end up settling at the bottom.

Answer

Solution is consistent and uniform in appearance and composition while suspension particles move rapidly and collide with each other.

Answer

Solution is non-uniform in appearance and composition while suspension particles move rapidly bump with each other.

Question 16

In separating oil and soy sauce mixture, what will happen when the mixture is allowed to settle for some time?

Accepted Answer

The oil will float on top of soy sauce.

Answer

The soy sauce will float on the top of the oil.

Answer

The two liquids will mix together evenly.

Answer

The oil will settle at the bottom.

Question 17

In decantation, _______ is the component that is denser and settles   at the bottom.

Accepted Answer

sediment

Answer

decant

Answer

solvent

Answer

filtrate

Question 18

Your mother soak mongo seeds in water.  After sometime, the mongo seeds settled at the bottom. Why is it so?

Accepted Answer

The mongo seeds are denser than water.

Answer

Water is denser than mongo seeds.

Answer

They are less dense than water.

Answer

Water is as dense as the mongo seeds.

Question 19

How can decantation method be useful to everyday life?

Accepted Answer

All of the above.

Answer

It makes the chores easier.

Answer

It makes our everyday living more efficient.

Answer

It helps us save time.

Question 20

In cooking rice, how will you separate the water impurities from the   rice?

Accepted Answer

by pouring out the water slowly

Answer

by letting the water to evaporate

Answer

by using a filter

Answer

by using a funnel

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