(a) Define matter and write its three states.
(b) Explain how these states of matter arise due to variation in the characteristics of the particles.
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Answer (a)
Matter is any substance that has mass and takes up space by having volume.
Three states of matter
1) Solid
2) Liquid
3) Gas
Answer (b)
The following properties of particles decide whether a given substance will exist as Solid, liquid or gases :
1. Inter molecular spaces.
2. Inter molecular forces.
3. The amount of Movement of particles .
In solid :
In solid, the particles are closely packed .
There is strong force of attraction.
The particles vibrate about their mean position
They have minimum kinetic energy.
In liquids :
In liquids, particles are not as close as in solids.
They are some what loosely packed.
The inter molecular space is more than solids
Inter molecular force is less than solids.
The particles of liquids can move from one place to another.
The particles of liquid have more Kinetic energy than solids.
In gases :
In gases, particles are much farther apart from one another compared to solids and liquids.
The inter molecular space is more than solids and liquids.
Inter molecular force is very negligible.
The particles of gases can move from one place to another.
The particles of solids have more Kinetic energy than liquids.
Matter is any substance that has mass and takes up space by having volume.
Three states of matter
1) Solid
2) Liquid
3) Gas
Answer (b)
The following properties of particles decide whether a given substance will exist as Solid, liquid or gases :
1. Inter molecular spaces.
2. Inter molecular forces.
3. The amount of Movement of particles .
In solid :
In solid, the particles are closely packed .
There is strong force of attraction.
The particles vibrate about their mean position
They have minimum kinetic energy.
In liquids :
In liquids, particles are not as close as in solids.
They are some what loosely packed.
The inter molecular space is more than solids
Inter molecular force is less than solids.
The particles of liquids can move from one place to another.
The particles of liquid have more Kinetic energy than solids.
In gases :
In gases, particles are much farther apart from one another compared to solids and liquids.
The inter molecular space is more than solids and liquids.
Inter molecular force is very negligible.
The particles of gases can move from one place to another.
The particles of solids have more Kinetic energy than liquids.
ravishupanchal:
please give its solubility and fluidity
fluidity solid(can not ) , liquid ( can flow ) , gas ( flow with high rate)
solubility solid ( can not ) , liquid( can be) , gas ( soluble)
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Answered by
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Answer:
(a) Any substance that takes up mass and volume is known as matter.
(b) The characteristic of the particles are useful in defining the nature of state of matter.
Explanation:
(a) Matter is composed of tiny particles known as atoms. Anything that takes up mass and has volume is known as matter.
The three states of matter are as follows:
- Solid
- Liquid
- Gas
(b) Characteristic of the particles of matter is as follows:
1. Solid:
- Solid has a definite shape as well as volume.
- The intermolecular forces present in the solids are very strong.
- For example wood and iron.
2. Liquid:
- Liquid has a definite volume but it usually takes the shape of the container.
- The intermolecular forces between liquid molecules are weaker than that of solids.
- For example water and alcohol.
3. Gas:
- Gases have indefinite shape as well as volume.
- They have very weak intermolecular forces due to which the gaseous particles are allow to freely.
- For example oxygen and carbon dioxide.
Thus, the three states of matter are solid, liquid and gas and they have certain properties which are useful in defining the nature of the state of matter.
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