ICSE ICSE Class 7 - CISCE Question Bank Solutions for Chemistry

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.

Write true or false 

Earthquake is a desirable change.

Write true or false 

Melting of ice is a physical change.

Write true or false 

Burning of sugar is a temporary change.

Tick (√) the correct alternative from the choice given for the following statement.

A substance which can not sublime is

Tick (√) the correct alternative from the choice given for the following statement

Which one of the following is volatile in nature ?