Science for Ninth Class Part 2 Chemistry

Science for Ninth Class Part 2 Chemistry
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Science for Ninth Class Part 2 Chemistry

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Publisher: SChand Publications
ISBN: 9789352530267
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publisher do not give any representation or warranty with respect to the accuracy or completeness of the contents of this publication and are selling this publication on the condition and understanding that they shall not be made liable in any manner whatsoever. The publisher and the authors expressly disclaim all and any liability responsibility to any person, whether a purchaser or reader of this publication or not, in respect of anything and everything forming part of the contents of this publication. The publisher and authors shall not be responsible for any errors, omissions or damages arising out of the use of the information contained in this publication. Further, the appearance of the personal name, location, place and incidence, if any in the illustrations used herein is purely coincidental and work of imagination. Thus the same should in no manner be termed as defamatory to any individual.
CONTENTS FIRST TERM 1. MATTER IN OUR SURROUNDINGS
1 40
Matter is Made Up of Particles Evidence For Particles in Matter Diffusion and Brownian Motion Characteristics of Particles of Matter Rigid and Fluid Matter Classification of Matter as Solids, Liquids and Gases Properties of Solids, Liquids and Gases Why Solids, Liquids and Gases Have Different Properties To Show That Liquids do Not Have a Fixed Shape But They Have a Fixed Volume To Show That Gases do Not Have A Fixed Shape or a Fixed Volume To Show That Solids and Liquids Cannot be Compressed But Gases Can be Compressed Easily Diffusion in Gases, Liquids and Solids The Common Unit of Temperature and SI Unit of Temperature Relationship Between Celsius Scale and Kelvin Scale of Temperature Change of State of Matter Effect of Change of Temperature Solid to Liquid Change Melting Liquid to Gas Change Boiling or Vaporisation Gas to Liquid Change Condensation Liquid to Solid Change Freezing Latent Heat Latent Heat of Fusion and Latent Heat of Vaporisation Sublimation Effect of Change of Pressure Gases Can be Liquefied by Applying Pressure and Lowering Temperature Evaporation Factors Affecting Evaporation Temperature, Surface Area of the Liquid, Humidity of Air and Wind Speed Cooling Caused by Evaporation To Show the Presence of Water Vapour in Air Two More States of Matter Plasma and BoseEinstein Condensate BEC
2. IS MATTER AROUND US PURE
41 108
Pure Substances and Impure Substances Elements Types of Elements Metals, NonMetals and Metalloids Properties of Metals and Non-Metals Mixtures Types of Mixtures Homogeneous Mixtures and Heterogeneous Mixtures Compounds Differences Between Mixtures and Compounds The Case of Solutions and Alloys Solutions Properties of a Solution and Types of Solution Suspensions and Their Properties Colloids and Their Properties To Distinguish a Colloid From a Solution The Scattering of Light by Colloids Tyndall Effect Classification of Colloids Sol, Solid Sol, Aerosol, Emulsion, Foam, Solid Foam and Gel Concentration of a Solution The Case of a Liquid Solute Dissolved in a Liquid Solvent Saturated and Unsaturated Solutions Solubility Effect of Temperature and Pressure on Solubility Physical Changes and Chemical Changes Separation of Mixtures Separation of Mixture of Two Solids Separation by a Suitable Solvent, Separation by Sublimation and Separation by a Magnet Separation of a Mixture of a Solid and a Liquid Separation by Filtration Supply of Drinking Water in a City Separation by Centrifugation Separation of Cream From Milk Separation by Evaporation Purification by Crystallisation Separation by Chromatography To Separate the Dyes Present in Black Ink Separation by Distillation

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