what are the three stage of …

Matter can be classified as solid, liquid and gas on the basis of inter-molecular forces and the arrangement of particles. These three forms of matter can be converted from one state of matter to another state by increasing or decreasing pressure and temperature. For example, Ice can be converted from solid-state to a liquid state by increasing the temperature.

• States of Matter:

On the basis of physical states, all the matter can be classified into three groups – solids, liquids and gases. Examples of solids, liquids and gases are:

1. Sugar, sand, iron, wood, rocks, minerals and ice are the examples of solids.
2. Water, milk, oil, kerosene, petrol and alcohol are liquids.
3. Air, oxygen, hydrogen, carbon dioxide and steam are gases.

• The Solid State:

Properties of solids:

1. Solids have a fixed shape and a fixed volume.
2. Solids cannot be compressed much.
3. Solids have high densities. They are heavy.
4. Solids do not fill their container completely.
5. Solids do not flow.

• The Liquid State:

Properties of liquids:

1. Liquids have a fixed volume but they have no fixed shape.
2. Like solids, liquids cannot be compressed much.
3. Liquids have moderate to high densities. They are usually less dense than solids.
4. They do not fill their container completely.
5. They generally flow easily.

• The Gaseous State:

Properties of gases:

1. Gases have neither a fixed shape nor a fixed volume.
2. They can be compressed easily.
3. They have low densities.
4. They fill their container completely.
5. They flow easily.