NCERT Solutions Class 9 Maths Chapter 1 Matter In Our Surroundings – Here are all the NCERT solutions for Class 9 Maths Chapter 1. This solution contains questions, answers, images, explanations of the complete chapter 1 titled The Fun They Had of Maths taught in class 9. If you are a student of class 9 who is using NCERT Textbook to study Maths, then you must come across chapter 1 Matter In Our Surroundings. After you have studied lesson, you must be looking for answers of its questions. Here you can get complete NCERT Solutions for Class 9 Maths Chapter 1 Matter In Our Surroundings in one place.
NCERT Solutions Class 9 Science Chapter 1 Matter In Our Surroundings
Here on AglaSem Schools, you can access to NCERT Book Solutions in free pdf for Science for Class 9 so that you can refer them as and when required. The NCERT Solutions to the questions after every unit of NCERT textbooks aimed at helping students solving difficult questions.
For a better understanding of this chapter, you should also see summary of Chapter 1 Matter In Our Surroundings , Science, Class 9.
Class | 9 |
Subject | Science |
Book | Science |
Chapter Number | 1 |
Chapter Name |
Matter In Our Surroundings |
NCERT Solutions Class 9 Science chapter 1 Matter In Our Surroundings
Class 9, Science chapter 1, Matter In Our Surroundings solutions are given below in PDF format. You can view them online or download PDF file for future use.
Matter In Our Surroundings
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Question & Answer
Q.1: Which of the following are matter?
Chair, air, love, smell, hate, almonds, thought, cold, lemon water, smell of perfume.
Ans : Anything that occupies space and has mass is called matter. Matter can exist in three physical states—solid, liquid, and gaseous. Chair and almond are forms of matter in the solid state. Cold drink is a liquid state of matter. Air and smell of perfume are gaseous states of matter. Note: The sense of smell is not matter. However, the smell or odour of a substance is Classified as matter. The smell of any substance (say, perfume) is the gaseous form of that substance which our olfactory system can detect (even at very low concentrations). Hence, smell of perfume is matter.
Q.2: Give reasons for the following observation:
The smell of hot sizzling food reaches you several metres away, but to get the smell from cold food you have to go close.
Ans : Solids diffuse at a very slow rate. But, if the temperature of the solid is increased, then the rate of diffusion of the solid particles into air increases. This is due to an increase in the kinetic energy of solid particles. Hence, the smell of hot sizzling food reaches us even at a distance, but to get the smell from cold food we have to go close.
Q.3: A diver is able to cut through water in a swimming pool. Which property of matter does this observation show?
Ans : The ability of a diver to cut through water in a swimming pool shows that matter is made up of particles.
Q.4: What are the characteristics of the particles of matter?
Ans : The characteristics of particles of matter are: (i) Particles of matter have spaces between them. (ii) Particles of matter are continuously moving. (iii) Particles of matter attract each other.
Q.5: The mass per unit volume of a substance is called density. (density = mass/volume). Arrange the following in order of increasing density – air, exhaust from chimneys, honey, water, chalk, cotton and iron.
Ans : The given substances in the increasing order of their densities can be represented as: Air < Exhaust from chimney < Cotton < Water < Honey < Chalk < Iron
NCERT / CBSE Book for Class 9 Science
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All NCERT Solutions Class 9
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