When the air inside the bottle was heated by the hot water, it expanded. As the air expands, some of the air was pushed into the balloon causing it to expand slightly. After the stove fire was put out, the air inside the bottle cooled and contracted, and the size of the balloon shrank.
Was there any change in the colour of the balloon?
Important Questions on Changes Around Us
When the air inside the bottle was heated by the hot water, it expanded. As the air expands, some of the air was pushed into the balloon causing it to expand slightly. After the stove fire was put out, the air inside the bottle cooled and contracted, and the size of the balloon shrank.
What would have happened if the stove fire was not put out? Would the balloon have burst?
Folding a cloth is a _____ (reversible/irreversible) change.
Choose the appropriate word and fill in the blank.
Melting of ice is a _____ (reversible/irreversible) change.
State true or false whether withered flowers can be brought back to life.
Baking bread is an irreversible change.
