NCERT Solutions for Class 9 Science Chapter 1
Q 1: What are the states of matter? explain the properties of matter.
Ans: States of matter are mainly of 3 forms, they are solid, liquid and gas.
Shape and volume
Fixed shape and volume
No fixed shape but has volume
Neither definite shape nor volume
Arrangement of molecules
Regular and closely arranged
Random and little sparsely arranged
Random and more sparsely arranged
Flows from higher to lower level
Flows in all directions
Depends on interparticle attraction
Free, constant and random
Rate of diffusion
It depends on interparticle attraction.
Q 2: What will I learn in this chapter?
Ans: Matter in our surroundings explains you of various Physical Nature of Matter, Matter is made up of particles, How small are these particles of Matter?, Characteristics of Particles of Matter, Particles of Matter have space between them and Particles of Matter are continuously moving. The chapter explains how different matters change their state under different temperature and pressure. All-cause and effect resulting in the change of state of the matter are explained in a very simplified manner for you to understand.
You will also come across Particles of Matter attract each other, the States of Matter, The solid-state, The liquid state, The gaseous state, Can Matter Change Its State?, Effect of change of temperature, Effect of change of pressure, Evaporation, Factors affecting evaporation, How does evaporation cause cooling?.
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Ans: Yes, you can improve your grades with our help. We at Vedantu have a team of experts who understand the academic needs and requirements of students. The study material provided by Vedantu is crafted as per the latest syllabus and is made available to everybody through our online portal.
Our solutions and study guide are designed by our subject-matter experts in a step by step way for easy and better understanding of the concept. We made sure that CBSE and NCERT guidelines are strictly followed while drafting these solutions. All the topics are explained in detail to make it more clear for you.
Q 4: Explain the characteristics of particles of matter.
Ans: Matter is a particle which occupies space and consists of mass. You may consider things which you can see, hear, touch, smell and taste as matter. They are made up of very tiny particles which even cannot be seen with your own eyes. Various properties of matter are:
Particles of matter have spaces between them.
Particles of matter are always in motion.
Particles of matter attract each other.