Solids, Liquids and Gases - 1 Class 5 Worksheet Science

Q1: Multiple Choice Questions (MCQs).

(ii) Which state of matter takes the shape of the container it is in?
(a) Solid
(b) Liquid
(c) Gas
(d) Plasma
Ans: (c)
Gas particles move the fastest because they have more energy and are not as tightly packed as the particles in a solid or liquid.

(iii) Which state of matter has particles that move the fastest?
(a) Solid
(b) Liquid
(c) Gas
(d) Plasma
Ans: (b)
Liquids take the shape of the container they are in because their particles are not as tightly packed as in solids, allowing them to move and flow.

(iv) The process of a solid changing into a liquid is called:
(a) Melting
(b) Freezing
(c) Evaporation
(d) Condensation
Ans: (a)
Melting is when a solid changes into a liquid due to an increase in temperature, causing the particles to gain energy and move more freely.

(v) The process of a gas changing into a liquid is called:
(a) Melting
(b) Freezing
(c) Evaporation
(d) Condensation
Ans: (d)
Condensation is when a gas changes into a liquid due to a decrease in temperature, causing the particles to lose energy and become more tightly packed together.

Q2: Fill in the blanks.

(i) The three states of matter are _______, _______, and _______.
Ans: The three states of matter are solid, liquid, and gas.

(ii) Particles in a solid are packed closely together, making it _______.
Ans: Particles in a solid are packed closely together, making it incompressible.

(iii) Liquids do not have a fixed shape, instead, they take the shape of the _______.
Ans: Liquids do not have a fixed shape, instead, they take the shape of the container.

(iv) Gases have no fixed shape or volume and can be compressed or _______.
Ans: Gases have no fixed shape or volume and can be compressed or expanded.

(v) The change of a solid into a liquid is called _______.
Ans: The change of a solid into a liquid is called melting.

Q3: Match the column.

Ans: (i) Solid - (c) Fixed shape
(ii) Liquid - (d) Incompressible
(iii) Gas - (a) Shapeless
(iv) Melting - (e) Change of liquid to gas
(v) Evaporation - (b) Compressed

Q4: True or False.

(ii) Particles in a gas are loosely packed.
Ans: True

(iii) The process of a liquid turning into a solid is called evaporation.
Ans: False
The process of a liquid turning into a solid is called freezing or solidification.

(iv) The particles in a liquid are more tightly packed than in a solid.
Ans: False
The particles in a liquid are less tightly packed than in a solid.

(v) The particles in a gas have more energy than those in a solid or liquid.
Ans: True

Q5: Short Answer Questions.

(ii) How do the particles in a solid, liquid, and gas differ from each other?
Ans: In a solid, particles are closely packed together and cannot move freely. In a liquid, particles are less tightly packed and can move and flow. In a gas, particles are not tightly packed at all and move quickly and freely.

(iii) What is the process called when a liquid changes into a gas?
Ans: The process of a liquid changing into a gas is called evaporation.

(iv) What happens to the particles of a substance when it is heated?
Ans: When a substance is heated, its particles gain energy and move faster. This causes the substance to change state, such as from a solid to a liquid or a liquid to a gas.

(v) What is the process called when a liquid changes into a solid?
Ans: The process of a liquid changing into a solid is called freezing.