Question

state two types of physical changes that may take place when a substance is heated.

Answer 1

we take example of ice cubes when we heat them firstly they turned into water and on heating more they turned into steam.
we take second example of iron when we heat it,it loses its strength and easy to change into sheets or other things.its shape also changes

Answer 2

Answer:

The two changes that may take place are :

Explanation:

The physical change is a change in which no new substance is formed.

Thus,

Two changes that may take place when a substance is heated are :

1 - > Change of ice to liquid and liquid to steam while heating

When we heat ice cubes they are converted into liquid and then into steam on further heating.

2- > Heating of iron to form sheets

When we heat iron, it looses its strength and can be made into sheets