ICSE ICSE Class 7 - CISCE Question Bank Solutions for Chemistry

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. 

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

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

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The substances which can flow are called ________

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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.

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

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An earthquake is a _______ change.

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A new substance is formed in a _______ change.

Melting of solid (wax) is a physical change.

Chemical changes are accompanied by changes in energy.

What role does energy play in initiating a chemical change ?

Define:- Atom