CBSE Class 5 Science States Of Matter Worksheet Set 01

1. Name the following ................

i. Anything that occupies space and has mass. ................

ii. Conversion of liquid into gaseous state. ................

iii. A liquid in which a solid dissolves. ................

iv. The space between the molecules. ................

v. A homogenous mixture of a solute in a solvent. ................

vi. The mixture of salt and water. ................

vii. A hard substance which has definite shape and definite volume. ................

viii. A solid which dissolves in a liquid. ................

ix. Matter made up of different kinds of atoms combined in fixed numbers. ................

Χ. The three states of matter. ................

2. Fill in the blanks

i. Molecules are made up of ................

ii. The molecules of gas are ................ packed.

iii. Physical change is a................ change.

iv. ................ is a unique mixture that exists on the earth.

v. A ................ has neither a definite shape nor a definite volume.

vi. When the change is only in the state of matter, it is called a ................ change.

vii. A ................ has a definite shape and definite volume.

viii. Chemical change is a ................ change.

ix. Each molecule of oxygen contains ................ atoms of oxygen.

Χ. A definite shape. has a definite volume but does not have a

3. Write True or False

i. Water consists of two types of atoms. [ ]

ii. Liquids have a definite shape. [ ]

iii. Matter is made up of molecules. [ ]

iv. A solid has a definite shape and volume.[ ]

V. Physical change is a permanent change.[ ]

vi. A solid does not diffuse in air. [ ]

vii. Heating or cooling brings about physical changes. [ ]

I. Name the following:

Question 1. Anything that occupies space and has mass.
Answer: Matter
In simple words: Matter is everything around us that has weight and takes up space.

Exam Tip: Remember the two key characteristics of matter - mass and volume (space).

Question 2. Conversion of liquid into gaseous state.
Answer: Evaporation (or Vaporization)
In simple words: The process by which a liquid changes into a gas or vapor.

Exam Tip: Do not confuse evaporation with boiling; evaporation can happen at any temperature from the surface of a liquid.

Question 3. A liquid in which a solid dissolves.
Answer: Solvent
In simple words: The liquid that does the dissolving work (like water).

Exam Tip: Solute dissolves in a solvent to form a solution.

Question 4. The space between molecules.
Answer: Intermolecular space
In simple words: The empty gaps present between tiny particles of matter.

Exam Tip: Intermolecular space is minimum in solids and maximum in gases.

Question 5. A homogenous mixture of a solute in a solvent.
Answer: Solution

Exam Tip: Solute + Solvent = Solution.

Question 6. The mixture of salt and water is called.
Answer: Salt solution
In simple words: Salt dissolves completely in water to form a uniform mixture.

Exam Tip: This is an example of a solid-liquid solution.

Question 7. A hard substance which has definite shape and definite volume.
Answer: Solid
In simple words: Solids are rigid objects that do not change their shape easily.

Exam Tip: Solids have tightly packed molecules with strong intermolecular forces.

Question 8. A solid which dissolves in a liquid.
Answer: Solute
In simple words: The substance that gets dissolved (like sugar or salt).

Exam Tip: Solute is usually present in a smaller quantity in a solution.

Question 9. Matter made up of different kinds of atoms combined in fixed numbers.
Answer: Compound
In simple words: A pure substance formed when two or more elements combine chemically.

Exam Tip: Water (\(H_2O\)) is a classic example of a compound.

Question 10. The three states of matter.
Answer: Solid, Liquid, and Gas
In simple words: The three physical forms in which matter can exist.

Exam Tip: These states depend on temperature, pressure, and intermolecular forces.

II. Fill in the blanks:

Question 1. Molecules are made up of ___________.
Answer: atoms
In simple words: Atoms join together to form molecules.

Exam Tip: An atom is the basic building block of matter.

Question 2. The molecules of gas are ___________ packed.
Answer: loosely (or very loosely)
In simple words: Gas particles have huge gaps between them, allowing them to move freely.

Exam Tip: Due to loose packing, gases can flow and fill any available space.

Question 3. Physical change is a ___________ change.
Answer: temporary (and reversible)
In simple words: A change where no new substance is formed.

Exam Tip: Melting of ice is a common example of a physical change.

Question 4. ___________ is a unique mixture that exists on the earth.
Answer: Air
In simple words: Air is a mixture of various gases essential for life.

Exam Tip: Nitrogen, oxygen, carbon dioxide, and argon are main components of air.

Question 5. A ___________ has neither a definite shape nor a definite volume.
Answer: gas
In simple words: Gases expand to fill whatever container they are placed in.

Question 6. When the change is only in state of matter, it is called ___________ change.
Answer: physical
In simple words: Changing from solid to liquid or liquid to gas is physical.

Exam Tip: Chemical composition remains identical before and after a physical change.

Question 7. A ___________ has a definite shape and definite volume.
Answer: solid
In simple words: Solids maintain their form and size on their own.

Exam Tip: Examples include wood, stone, and iron.

Question 8. Chemical change is a ___________ change.
Answer: permanent (and irreversible)
In simple words: A change that creates entirely new substances with different properties.

Exam Tip: Burning of paper or rusting of iron are chemical changes.

Question 9. Each molecule of oxygen contains ___________ atoms of oxygen.
Answer: two (\(2\))
In simple words: Oxygen gas exists as diatomic molecules (\(O_2\)).

Question 10. A ___________ has a definite volume but does not have a definite shape.
Answer: liquid
In simple words: Liquids take the shape of the container they are poured into.

Exam Tip: Water, milk, and oil are examples of liquids.

III. Write True or False:

Question 1. Water consists of two types of atoms.
Answer: True
In simple words: Water molecule (\(H_2O\)) contains hydrogen and oxygen atoms.

Exam Tip: Elements are hydrogen and oxygen; atoms are 2 hydrogen and 1 oxygen.

Question 2. Liquids have a definite shape.
Answer: False
In simple words: Liquids do not have a fixed shape; they flow and take the shape of their container.

Question 3. Matter is made up of molecules.
Answer: True
In simple words: Molecules are the building blocks that make up all matter.

Question 4. A solid has a definite shape and volume.
Answer: True
In simple words: Solids are rigid and maintain both their shape and size.

Question 5. Physical change is a permanent change.
Answer: False
In simple words: Physical changes are temporary and can be easily reversed.

Question 6. A solid does not diffuse in air.
Answer: True
In simple words: Solid particles are tightly packed and cannot freely mix or spread like gases or liquids.

Question 7. Heating or cooling brings about physical changes.
Answer: True
In simple words: Changing temperature can turn ice to water (melting) or water to ice (freezing).