Primary 5 Science Tutorial 1.1

Name:_________________________ Date:_______________

Different Types Of Changes (1.1)

A. Write the number of the correct answer in the brackets.

1. When a substance changes its state, it is a ________ process. ()
(1)
(2)
(3)
(4)

reversible
useful
irreversible
chemical
2. Which statement is false? ()
(1)
(2)
(3)
(4)

Changes are caused by interactions
Living things go through changes.
All changes take same amount of time.
Non-living things can undergo changes.
3. Mixing sugar with a cup of hot tea is ________. ()
(1)
(2)
(3)
(4)

a reversible physical process
an irreversible physical process
a reversible chemical process
an irreversible chemical process
4. Morning dew on the leaves of plants in the garden comes from ________. ()
(1)
(2)
(3)
(4)

plants through their stomata
photosynthesis the day before
water vapour in the atmosphere
condensation of clouds
5. When a ball is kicked, the moment the foot comes into contact with the ball, there ________ of the ball. ()
(1)
(2)
(3)
(4)

is no change
is change in size
is change in volume
is change in size and volume
6. A change in state takes place when ________. ()
(1)
(2)
(3)
(4)

a balloon is inflated
a piece of paper is burnt into ashes
a chalk stick is pounded into powder
a piece of wood is cut into smaller pieces
7. When a cup of water is spilled onto the floor, there are changes in ________. ()
(1)
(2)
(3)
(4)

shape and volume
weight, shape and volume
colour and shape
weight and shape
8. Which of the following process is reversible? ()
(1)
(2)
(3)
(4)

Frying an egg.
Litmus paper changing colour.
Heating sugar strongly.
Dissolving salt in water.
9. The growth of a caterpillar to a moth has ________ pattern. ()
(1)
(2)
(3)
(4)

an unpredictable
no definite
an easy
a definite
10. Metal gates are painted to prevent rust from developling because the paint ________. ()
(1)
(2)
(3)
(4)

masks the rust
has a chemical reaction with the metal
shields the metal from oxygen
replaces the metal
B. Write "T" for true and "F" for false.

1. Fire requires oxygen to continue burning.

()
2. When water is boiling, the temperature of the water increases.

()
3. All changes are reversible.

()
4. Aging of man is an irreversible process.

()
5. Water can cause rusting because it contains oxygen.

()
6. Climatic changes does not follow a definite pattern.

()
7. All changes take time to happen. Some changes are fast while others are slow.

()
8. The particles in a solute can pass through a filter paper.

()
9. The rotation of the Earth is a physical change.

()
10. In a brine solution, the salt is the solvent.

()
C. Fill in the blanks with the most suitable word.

1. Living organisms undergo changes during growth, these are termed ____________ changes.

2. When steam condenses into water, ____________ is given off.

3. Limewater turns chalky when it interacts with ____________.

4. To move a stationary object, a ____________ has to be applied.

5. A solution is homogeneous if its properties are the __________ throughout.

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1.	When a substance changes its state, it is a ________ process.		()
	(1) (2) (3) (4)	reversible useful irreversible chemical
2.	Which statement is false?		()
	(1) (2) (3) (4)	Changes are caused by interactions Living things go through changes. All changes take same amount of time. Non-living things can undergo changes.
3.	Mixing sugar with a cup of hot tea is ________.		()
	(1) (2) (3) (4)	a reversible physical process an irreversible physical process a reversible chemical process an irreversible chemical process
4.	Morning dew on the leaves of plants in the garden comes from ________.		()
	(1) (2) (3) (4)	plants through their stomata photosynthesis the day before water vapour in the atmosphere condensation of clouds
5.	When a ball is kicked, the moment the foot comes into contact with the ball, there ________ of the ball.		()
	(1) (2) (3) (4)	is no change is change in size is change in volume is change in size and volume
6.	A change in state takes place when ________.		()
	(1) (2) (3) (4)	a balloon is inflated a piece of paper is burnt into ashes a chalk stick is pounded into powder a piece of wood is cut into smaller pieces
7.	When a cup of water is spilled onto the floor, there are changes in ________.		()
	(1) (2) (3) (4)	shape and volume weight, shape and volume colour and shape weight and shape
8.	Which of the following process is reversible?		()
	(1) (2) (3) (4)	Frying an egg. Litmus paper changing colour. Heating sugar strongly. Dissolving salt in water.
9.	The growth of a caterpillar to a moth has ________ pattern.		()
	(1) (2) (3) (4)	an unpredictable no definite an easy a definite
10.	Metal gates are painted to prevent rust from developling because the paint ________.		()
	(1) (2) (3) (4)	masks the rust has a chemical reaction with the metal shields the metal from oxygen replaces the metal


1.	Fire requires oxygen to continue burning.	()
2.	When water is boiling, the temperature of the water increases.	()
3.	All changes are reversible.	()
4.	Aging of man is an irreversible process.	()
5.	Water can cause rusting because it contains oxygen.	()
6.	Climatic changes does not follow a definite pattern.	()
7.	All changes take time to happen. Some changes are fast while others are slow.	()
8.	The particles in a solute can pass through a filter paper.	()
9.	The rotation of the Earth is a physical change.	()
10.	In a brine solution, the salt is the solvent.	()


1.	Living organisms undergo changes during growth, these are termed ____________ changes.
2.	When steam condenses into water, ____________ is given off.
3.	Limewater turns chalky when it interacts with ____________.
4.	To move a stationary object, a ____________ has to be applied.
5.	A solution is homogeneous if its properties are the __________ throughout.