Fill in the blanks in the following statements using the words given in the box.

rusted, colourful, substance, chemical, physical,

reversible, iron oxide, object

(a) Making sugar solution is a ____________ change.

(b) A physical change is generally____________.

(c) Grinding of wheat grain changes its size. It is a ____________ change.

(d) Iron benches kept in lawns and gardens get____________. It is a _________ change because a new _________ is formed.

(a) Making sugar solution is a physical change.

Here sugar crystals are changing their state from solid to liquid. Hence it is a physical change.

(b) A physical change is generally reversible.

Most of the physical changes are reversible.

(c) Grinding of wheat grain changes its size. It is a physical change.

Size is a physical property. Change in size is a physical change.

(d) Iron benches kept in lawns and gardens get rusted. It is a chemical change because a new substance is formed.

Iron benches kept in lawns and gardens get rusted due to the presence of air and water. It is a chemical change in which iron oxide is formed as a new substance.