Matter In Our Surrounding

Question 1

Define Matter

Answer 1

Everything in this universe is made up of matter . Anything that occupies space and has mass is known matter.

Question 2

What Are the Properties of Matter?

Answer 2

Matter is made up of particles, It is not continuous.
Particles of matter are Very Small.
Particles of matter attract each other
Particles of matter have space between them
Particles of matter are in continuous motion

Question 3

What is Diffusion ?

Answer 3

Particles of matter possess kinetic energy. If the temperature increases the Kinetic energy of the particles also increases.
The intermixing of particles of two different types on their own is called Diffusion on heating diffusion increases.

Question 4

What are state’s of matter ?

Answer 4

There are three States of matter :
Solid
liquid
Gas

Question 5

What are the properties of solid state?

Answer 5

*Solid has definite shape, distinct boundaries and fixed volumes,that is, have negligible compressibility.
*Solids are Rigid ,that is,have a tendency to maintain their shape when subjected to outside force. Solids may break
under force, but changing their shape is difficult, so they are rigid.
*Their definite shape, distinct boundaries and fixed volumes is due too the small interpartical space and great interparticluar attraction between the particles . this is also the reason why they cannot be compressed

Question 6

What are the special cases in solid state?

Answer 6

• A rubber band changes shape under
  force and regains the same shape when
  the force is removed. If excessive force is
  applied, it breaks.
• The shape of each individual sugar or
  salt crystal remains fixed, whether we
  take it in our hand, put it in a plate or in
  a jar.
• A sponge has minute holes, in which
  air is trapped, when we press it, the air
  is expelled out and we are able to
  compress it.
  These all are solids .

Question 7

What are the properties of liquid state?

Answer 7

*liquids have no fixed shape but have a fixed volume because the interparticular spaces are grater than that of solid and the interparticular forces are only strong enough to keep the particles together butnot strong enough to keep them in a fixed position.
*They take up the shape of the container in which they are kept. Liquids flow and change shape, so they are not rigid but can be called fluid.
Due to large interparticular space and low force of attraction the particles do not have a fixed position so the can flow . the fluidity differs form liquid to liquid.
*Solids Gases and liquids can diffuse in liquids .Rate of diffusion liquid>solids. Particles move freely and have greater space between them compared to solids