Answer the following:

Group the following into physical change and chemical change.

Dissolving salt in H₂O, Burning of a fuel,

Rusting of iron, melting of an ice cube.

Physical change: It is a temporary change in which no new substance is formed and the mass of the substance remains the same. Hence, dissolving the salt in H₂O and melting of an ice cube are physical changes.

Chemical change: It is a permanent change in which a new substance is formed and the weight of the substance changes. Hence, rusting of iron and burning of fuel are chemical changes.