ICSE ICSE Class 7 - CISCE Question Bank Solutions

Fill in the blank

Chemical change occurs as a result of __________ between two substances.

Fill in the blank.

When a candle burns, wax melts. Melting of wax is a ________ change.

Fill in the blank

Revolution of the earth around the sun is a ________ change.

Fill in the blank.

Growing of a seedling into a plant is _______ change.

State whether the following is physical or chemical changes.

glowing of a bulb -

State whether the following is physical or chemical changes.

burning of sugar — 

State whether the following is physical or chemical changes.

growing of a piglet into a pig — 

State whether the following is physical or chemical changes.

water cycle in nature —

State whether the following is physical or chemical changes.

respiration in living beings —

State whether the following is physical or chemical changes.

shaping a piece of glass —

State whether the following is physical or chemical changes.

lightning — 

State whether the following is physical or chemical changes.

(energy produced) dissolving sugar in water —

State whether the following is physical or chemical changes.

heating a mixture of iron filings and sulphur—

State whether the following is physical or chemical changes.

mixing oil with water —

State whether the following is physical or chemical changes.

cutting wood into small pieces — 

State whether the following is physical or chemical changes.

photosynthesis — 

State whether the following is physical or chemical change.

Digestion of food —

State whether the following is physical or chemical changes.

Slaking of lime — 

Write true or false

Cutting of paper into pieces is a chemical change.

Write true or false

Rusting of iron is a chemical change.