ICSE ICSE Class 8 - CISCE Question Bank Solutions for Chemistry

Classify the following as a physical or a chemical change.

Burning of coal

Classify the Following as a Physical Or a Chemical Change.

Formation of Clouds

Classify the Following as a Physical Or a Chemical Change.

Making of a Sugar Solution

Classify the Following as a Physical Or a Chemical change.

Glowing of an Electric Bulb

Classify the Following as a Physical Or a Chemical Change.

Curdling of Milk

Define a chemical change. Give two examples of the above changes.

Fill in the blank.

The process of a liquid changing into a solid is called ________

Fill in the blank.

A change, which alters the composition of a substances, is known as a___________ change.

Fill in the blank.

There is no change in the _____________of the substance during a physical change.

Fill in the blank.

The reaction in which energy is evolved is called

Given reason:

Freezing of water to ice and evaporation of water are physical changes.

Given reason:

Burning of paper is a chemical change.

Given reason:

Cutting of a cloth piece is a physical change, though it cannot be reversed.

Give four difference between physical and chemical changes.

State its one drawback of Rutherford’s atomic model.

Define the term Mass number.

Define the term Nucleons.

Define the term Valence shell.

State the following pertaining to the physical properties of hydrogen: Colour & odour

State the following pertaining to the physical properties of hydrogen: Solubility in water