Matters In Our Surroundings Class 9 Notes -Chapter 1
Matter In Our Surroundings Class 9 Notes - Chapter 1 States of Matter · Matter can be classified as solid, liquid and gas on the basis of interparticle forces and the arrangement of particles. · These three forms of matter are interconvertible by increasing or decreasing pressure and temperature. For example, ice can be converted from solid to a liquid by increasing the temperature. Property Solid Liquid Gas Shape and volume Fixed shape and volume No fixed shape but has volume Neither definite shape nor volume Energy Lowest Medium Highest Compressibility Difficult Nearly difficult Easy Arrangement of molecules Regular and closely arranged Random and little sparsely arranged Random and more sparsely arranged Fluidity Cannot flow Flows from higher to lower level Flows in all directions Movement Negligible Depends on interparticle attraction Free, constant and random Interparticle space Very less More Large Interparticle attraction Maximum Medium Minimum Densit...