Class 9 CBSE/NCERT Chapter 1 | Matter in Our Surroundings | Lecture 3 | Temperature | Definitions

Class 9 CBSE/NCERT Chapter 1 | Matter in Our Surroundings | Lecture 3 | Temperature | Definitions Download Mukesh Online Academy app (Google Play) 👉 https://play.google.com/store/apps/de... & See in store section. Class 9 CBSE/NCERT Chapter 1 | Matter in Our Surroundings | Lecture 2 | Solid, Liquid , Gases #science #Class 9 #chemistry #class9science #class9sciencenotes #class9cbse #class9th #class9chapter1 #class9science #class9sciencechapter1 #class9ncert #class9ncertscience #solid #liquid #gas #temperature #celcius #kelvin #melting #meltingpoint #boiling #boilingpoint For any doubt/query/live online classes and notes write in comments or write mail/WhatsApp to Mukesh Online Academy, New Delhi [email protected] Follow on telegram: https://t.me/mukeshonlineacademy Follow on instagram: mukesh_online_academy Call : 9540297378 Whatsapp: https://wa.me/message/4ME2JZ6OYSAZI1 class 9 chemistry chapter 1, Matter in our surroundings class 9 science chemistry, class 9 science chapter 1 Matter in our surroundings, ncert class 9 science chapter 1 Matter in our surroundings, class 9 science chapter 1 Matter in our surroundings , In this live class we will discuss about When an incense stick is lighted in the corner of the room, its fragrance spreads quickly in the entire room. Why do gases have neither a fixed shape nor a fixed volume? The smell of hot sizzling food reaches you several metres away but to get the smell from cold food you have to go close. A diver is able to cut through water in a swimming pool. Which property of matter does this observation show? The mass per unit volume of a substance is called density. (Density = mass/volume). Arrange the following in the order of the increasing density: Air, exhaust from chimneys, honey, water, chalk, cotton and iron. Comment upon the following: (a) Rigidity (b) Compressibility (c) Fluidity (d) Filling a gas container (e) Shape (f) Kinetic Energy (g) Density Give reason: -- A wooden table should be called a solid. Liquids generally have lower density as compared to solids. But you must have observed that ice floats on water. Find out why? A rubber band changes its shape on stretching then why do we call it a solid? A sponge can be compressed easily. Why do we call sponge a solid? Salt and sugar can be filled in the jar of any shape and they take the shape of that jar. It appears that they don't have a fixed shape. Then why do we call them solids?