Matter chapter class 9th
Matter – whatever we see in the universe is made up of a material which have tiny particle is called matter
Characteristics particle of matter
1. Matter is .ade up of tiny particles
2. Particle of matter have space between them
3. Particle of matter are continuously moving
4. Particle of matter attract each other
Question. Explain how can be show that particle of matter have space between them
Answer. When we take tea,coffee or lemonbade.paricle of one type of matter get into particle of other this shows that there is enough space between particle of matter
Question. What is diffusion
Answer. The intermiring of particles of two types of matter on their own is called diffusion
Question. State of matter
Answer. Matter around us exist in three different state solid,liquid and gas
Question .define gas state
Answer.gasea are highly compressible as compared to solid and liquid due to high compressibility large volume of gas can be compressed into a small cylinder and transported easily
Question.define liquid state
Answer. Liquid not have fixed shape but have fixed volume.they take up the shape of the container in which they are kept liquid flow and change shape so they are not regid but fluid
Question.define solid state
Answer . solid have definite shape distinct boundaries and fixed volume and have neligible compressibility.solid have a tendency to mentain there shape.it may breaks down under force but it is difficult to change their shape
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