ICSE ICSE Class 7 - CISCE Question Bank Solutions

State whether the following is physical or chemical changes.

passing electric current through a heater rod —

State whether the following is physical or chemical changes.

Melting of wax —

State whether the following is physical or chemical changes.

Boiling of an egg — 

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

Burning is a

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

When sugar is heated, its colour changes into 

True or false 

New substances are formed in a chemical change.

True or false?

During a physical change energy is either given out or absorbed by the system. 

True or false?

In a chemical change, rearrangement of molecules and atoms involves some energy changes. 

Fill in the blank :

The state of matter with definite volume and definite shape is called______

Fill in the blank :

The state of matter with definite volume and definite shape is called______

Fill in the blank :

The substances which can flow are called ________

Fill in the blank :

The substances which can flow are called ________

Name the terms for the change of a solid into liquid.

Name the terms for the change of a solid into liquid.

Name the terms for the particles of matter which may or may not have independent existence.

Name the terms for the particles of matter which may or may not have independent existence.

 Name the terms for the change of vapour into a liquid.

 Name the terms for the change of vapour into a liquid.

 Fill in the blank

A change in which the substance can be brought back to its original state is called a _______ change.

Fill in the blank

An earthquake is a _______ change.