Chapter 6 – Changes Around Us

When ice melts into water, what types of changes do you observe ?

Cooked food is the:

If we burn a candle, the height of a candle will .

For making the curd, we should the milk.

Metal rim is made slightly than the wooden wheel.

the metal rim expands and fits into the wheel.

The black material (tar) for repairing road is .

The incense stick has burnt to give off.

Metal expand on heating and contract on.

A change in a substance can be brought by heating it or by it with other substances.

An iron piece is heated red hot and beaten into a shape.

The change which can be reversed is known as:

The change which cannot be reversed is known as:

A process in which liquid changes into gas is known as:

A process by which gas is turned into liquid is known as:

A process in which liquid is freezed into solid is known as:

When a solid dissolves in liquid then is formed.

Write a few changes taking place around us on their own:

The changes that require long time to occur are called:

The changes which occur immediately are called:

Irreversible changes can also be called:

Reversible changes can also be called: