Physical and Chemical Changes - JSS2 Basic science Past Questions and Answers - page 1
1
What type of change involves alterations in the physical state or appearance of a substance without changing its chemical composition?
View related lesson
A
Chemical change
B
Physical change
C
Biological change
D
Environmental change
2
Which type of change typically involves the formation of new substances with different chemical compositions?
View related lesson
A
Physical change
B
Chemical change
C
Chemical change
D
Magnetic change
3
In which type of change are the processes often reversible?
View related lesson
A
Physical change
B
Chemical change
C
Biological change
D
Geological change
4
Which type of change is usually irreversible?
View related lesson
A
Physical change
B
Chemical change
C
Thermal change
D
Electrical change
5
What kind of changes generally involve the release or absorption of energy?
View related lesson
A
Physical changes
B
Chemical changes
C
Biological changes
D
Geological changes
6
What kind of changes generally involve the release or absorption of energy?
View related lesson
A
Physical changes
B
Chemical changes
C
Biological changes
D
Geological changes
7
What is the primary characteristic of physical changes?
View related lesson
A
They involve changes in chemical composition.
B
They are usually irreversible.
C
They often involve the release of energy.
D
They involve alterations in physical properties without changing chemical composition.
8
What distinguishes chemical changes from physical changes?
View related lesson
A
Reversibility
B
Formation of new substances
C
Involvement of energy release
D
None of the above
9
Which type of change involves the breaking and forming of chemical bonds?
View related lesson
A
Physical change
B
Chemical change
C
Biological change
D
Environmental change
10
Which type of change often involves phase transitions?
View related lesson
A
Physical change
B
Chemical change
C
Biological change
D
Geological change
Loading lesson…