act
5. What happens to water if
(a) it is kept in a deep freezer?
(b) it is heated ?
Explain the phenomenon of change of state
of water
tion of mass
Answers
(a) When water is kept in a deep freezer, it gets cooled and change into ice at 0°C ice.
(b) Water on heating changes into steam at 100°C
Phenomenon of change of state of water:
Water is a liquid under ordinary conditions but, when it is kept in a deep freezer, it changes into ice at 0°C and when ice is kept at room temperature again changes back into liquid water.
Similarly, water on heating change into steam at 100°C, which on cooling changes back into liquid water. But there is no change in the chemical composition of water. When its state changes from liquid to solid or liquid to gaseous state.
hope this was helpful
Answer:
a When water is kept in a deep freezer, it gets cooled and change into ice at 0°C ice. Phenomenon of change of state of water: ... Similarly, water on heating change into steam at 100°C, which on cooling changes back into liquid water.
Explanation:
b Evaporation happens when a liquid substance becomes a gas. When water is heated, it evaporates. The molecules move and vibrate so quickly that they escape into the atmosphere as molecules of water vapor. ... The water level will decrease as it is exposed to the heat of the sun.