Free States of Matter 02 Practice Test - 4th Grade 

Question 1

The solid state of a jelly is 

A.

Solid

B.

Liquid

C.

Gas

D.

Semi-solid

SOLUTION

Solution : D

A piece of jelly is kind of squishy but maintains its shape. It is considered to have a semi-solid state. 

Question 2

Solids do not have a definite shape and volume.

A.

True

B.

False

SOLUTION

Solution : B

Solids have a definite shape and size because the force of attraction between the molecules is very strong compared to gases and liquids. 

Question 3

Matter has ______.

A.

mass and occupies no space

B.

no mass and occupies space

C.

has mass and occupies space

D.

no mass and occupies no space

SOLUTION

Solution : C

Matter is anything that has mass and occupies space. It is mostly found in three forms: solid, liquid and gas.

Question 4

Which among these is not a property of a liquid?

A.

It has volume.

B.

It can flow.

C.

It has mass.

D.

It has a definite shape.

SOLUTION

Solution : D

Liquids have no definite shape because the molecules present in a liquid are loosely packed. So, the molecules tend to move freely.

Question 5

Which state of matter is the easiest to compress?

A.

Plasma

B.

Gas

C.

Liquid

D.

Solid

SOLUTION

Solution : B

Gas particles are loosely packed and have large spaces between them. This means they can be compressed easily.

Question 6

Which of the following statement is false?

A. Liquids have indefinite shape.
B.

Liquids are easily compressible.

C. Liquids are difficult to compress.
D. Liquids have definite volume.

SOLUTION

Solution : B

Molecules of a liquid are loosely packed due to which it doesn't have a definite shape. But, the force of attraction between the molecules is strong enough that it has a definite volume and doesn't compress easily.

Question 7

The force of attraction between the gas particles is very high.

A.

True

B.

False

SOLUTION

Solution : B

The force of attraction between the particles of gas is very weak compared to solids and liquids. The particles in gases are freely suspended which allows them to flow freely. 

Question 8

When you cool a liquid, the movement of molecules ___.

A.

increases

B.

decreases

C. becomes still
D.

remains the same

SOLUTION

Solution : B

When a liquid is cooled down, the movement of molecules slows down.

Question 9

When we mix sugar and water, it forms a sugar-water ______.

A. liquid
B.

solvent

C.

solution

D.

molecule

SOLUTION

Solution : C

Solution is a homogeneous mixture of two or more substances.  In a sugar solution, sugar gets uniformly mixed with water.

Question 10

Solids always have a rigid structure.

A.

True

B.

False

SOLUTION

Solution : B

Solid can be rigid or compressible. Some solids like sponge or rubber are not rigid and can be easily deformed or stretched.

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