Advertisements
Advertisements
Question
Given reason:
Freezing of water to ice and evaporation of water are physical changes.
Advertisements
Solution
Freezing of water to ice and evaporation of water are physical change because water can be brought back to its original (liquid) form by
- We can heat the ice to bring it back to water.
- We can cool down the vapours to bring it back to water.
APPEARS IN
RELATED QUESTIONS
Write true or false for the statement
A natural change can also be a desirable change
Tick (√) the correct alternative from the choice given for the following statement.
An example of both physical and chemical change is
Tick the most appropriate answer.
Rising and setting of the sun at a given place is a
Classify the following as physical or chemical change :
Growth of a plant
Which of the following are physical changes and which are chemical changes?
Burning of candle wax, Melting of candle wax, Mixing of iron filings and sand, Burning of wood, Breaking a piece of chalk, Burning a piece of paper, Cutting a piece of paper.
Give the main differences between physical changes and chemical changes.
Which of the following are physical changes ?
- melting of iron metal
- rusting of iron metal
- bending of an iron rod
- drawing a wire of iron metal
Name the following.
The product of the chemical change in keeping a polished iron nail exposed to the atmosphere.
Physical Change: Boiling::Chemical Change: ______.
Distinguish physical and chemical changes.
