S.S.D GIRLS COLLEGE OF EDUCATION

Subject: ScienceTopic: Matter Around Us.

Submitted to: - Submitted by: -

Dr. Sapna Setia Jaspreet Kaur

52884

MATTER AROUND

US

DEFINITION……..

Matter:- anything which occupies some space and have some mass is called matter.M

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EXAMPLES OF MATTER:-

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THE MATTER AROUND US

EXIST IN THREE STATES

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STATES OF MATTER

1.Solid

2.Liquid

3.GasMA

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SOLID1. Solids feels hard.2. Solids are rigid and

can’t be compressed.3. Solids have definite

volume.4. Solids have definite

shape.5. Intermolecular space

is least.

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ARRANGEMENT OF ATOMS IN

SOLIDSAtoms are tightly packed in solids and intermolecular space is least.

So they can’t move.

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EXAMPLES OF SOLID

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LIQUIDS1. They are slippery and feels

wet.

2. They are not rigid can be

compressed to a little extent.

3. Liquid have definite volume.

4. Liquids take the shape of the

container in which they are

placed.

5. Intermolecular space

between the atoms is more

then solids.

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ARRANGEMENT OF ATOMS IN

LIQUIDS1. Intermolecular space between

atoms is grater then solids.

So they can flow.

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EXAMPLES OF LIQUIDS

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GASES1. Gases are invisible.2. They are not rigid and

can be easily compressed.

3. Gases have neither definite volume nor fixed shape.

4. Gases can flow in all directions.

5. Intermolecular spaces between atoms is maximum.

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ARRANGEMENT OF ATOMS IN

GASES1. Intermolecular space between

atoms is maximum.

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EXAMPLES OF GASES

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CONCLUSION

Q: Why solid can not flow

but liquid and gases can?

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Ans: As in solids intermolecular space is least and atoms are tightly packed so, they can’t move. But in liquids intermolecular spaces between the atoms is more then the solids. So, they can move randomly and can flow. Now in gases intermolecular space between atoms is maximum So, they can vibrate around their position easily and that is why gases can freely move.

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INTERESTING POINT

________ is the substance

which can exist on the

three states of matter.

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Ans: Water is a substance which can exist in all the three states of matter.

1. Water --- Liquid ----

2. Ice --- Solid ----

3. Vapour ---- Gas -----MA

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Thanks…………