Changes Around Us Worksheet-2
(a) Chemical change
(b) Physical and irreversible change
(c) Chemical and exothermic change
(d) Chemical and endothermic change
(a) Condensation
(b) Evaporation
(c) Vaporization
(d) Freezing
(a) Evaporation and melting
(b) Freezing and condensation
(c) Freezing and evaporation
(d) Condensation and melting
(a) A new substance is formed
(b) Change is permanent
(c) Both A new substance is formed & Change is permanent
(d) Physical change occurs
(a) Chemical change
(b) Permanent change
(c) Reversible change
(d) Irreversible change
(a) Batter to idli
(b) Bud to flower
(c) Cow dung to biogas
(d) Ice-cream to molten ice-cream
|
Column – I |
|
Column - II |
|
A |
Freezing |
P |
The change of a solid to a liquid |
|
B |
Melting |
Q |
The change of a vapor to a liquid |
|
C |
Condensation |
R |
The change of a liquid to vapor |
|
D |
Sublimation |
S |
The change of a liquid to a solid |
|
E |
Evaporation |
T |
The change of a gas directly to a solid |
Answer Key:
(1)–(c); (2)–(a); (3)–(a); (4)–(c); (5)–(c); (6)–(d); (7)–A-S, B-P, C-Q, D-T, E-R