SSC GK Chemistry: Is Matter Around Us Pure PDF

SSC GK SSC GK BATCH 2.0 Chemistry Is Matter Around Us Pure Lecture :- 1 For Notes Join Telegram : Click on the icon. For Lectures Subscribe Our Parmar SSC Youtube Channel Click on the icon.  C SS IS MATTER AROUND US R A RM PA ...

SSC GK SSC GK BATCH 2.0 Chemistry Is Matter Around Us Pure Lecture :- 1 For Notes Join Telegram : Click on the icon. For Lectures Subscribe Our Parmar SSC Youtube Channel Click on the icon.  C SS IS MATTER AROUND US R A RM PA  What is matter? - - Anything that has a fixed volume/mass occupies some space Eg: phone, laptop, water, air - Panch Tatva by Indian Philosophers - 1. Air 2. Earth C 3. Fire 4. Sky 5. Water SS Properties of Matter - 1. Particles of matter have space b/w them 2. Particles of matter are continuously moving 3. Particles of matter attract each other States of matter R - due to movement A - Space Kinetic Energy Movement - Force of attraction - -- - Low Low Low High Solid RM I Medium - Medium an Medium Medium ↑ Liquid High Low aHigh High Low I Gas PA Shape change -It may break Solid - - Has definite shape, distinct boundaries, negligible compressibility Effect of Change of Temperature Temperature↑- Force of attraction↓-Movement of particles↑ - Space↑ Heat Heat Solid -> Liquid - Gas Eg: Ice -> Water -> Vapour  Effect of Chsnge - Ba of Pressure Solid CO2 - Solid - Pressure Gas Gas -> I Pressure Solid Liquification of gas: Temperature ↓ X C - Pressure ↑ SS Change in Matter - R A Temp↑ Gas -> Plasma (gas ionisation) RM A ↓ 4th state of matter Predicted ↓ I S. N Bose and Einstein, 1924 -> Visualised Cooling at I Gas -> Bose-Einstein Condensate (5th state of matter) OK ↓ PA v (Bosons particle) Absolute zero W # Eric Cornell -> By using Rubidium 87 atoms ->Crude Boson Boson ↓ ↓ (Scientist) (1995) ↓ -In lab 1st time in 2001 + Bosons particles ↓ Awarded Nobel Prize in Physics created Favourable Condition for Evaporation - Liquid -> Gas 1. Increase in Temperature 2. Increase in Surface Area 3. Increase in Wind Speed T --> Rate of evaporation↑ 4. Increase in Humidity -> Rate of Evaporation↓ C Classification of Matter SS - R A RM What is Pure Substance? - Substances that is made up of only one type of particle I It has uniform composition and properties -> eg: Sugar crystal, iron piece, salt, distilled water PA lemonade... -> impure... - - ↑ ---..... ~. ↓ - - Impure I - ↓ ↓ H2O Fat Protein H2O salt sugar  Element-Iron rod, H2 - Basic form of matter can’t be broken into simple substances Compound - H O (water) - 2 Can be broken into simple substances Mixture C - ↑ Two or more different type of substance particles - Don’t have fixed composition SS Types - - Homogenous Alloy -can be seen with naked I Heterogenous -> Eg: Sand eyes Homogenous Mixture - ↑ I I Has a uniform mixture throughout Also known as “Solutions” R Cannot be separated by physical process Solid-Liquid - A ↳ Liquid-Liquid : Solid-Solid - Eg: Alloy Gas-Gas Pure Air RM · -> · Small particle size - A nm diameter Heterogenous Mixture -- Has a non-uniform composition PA Constituents can be separated through physical properties - Also called “suspension” - Particle size >10 nm diameter  C SS - - -- Sand, sand solution - Lemonade, alloy Tyndall Effect - Scattering of light particle size A> Will not scatter light -> - - Heterogenous - Will scatter - - not scatter dete u R light light ↳ particle size >10 nm (large) homogenous heterogenous M ↑ A RM. Concentration of Solution - Solute Two components I Scattering of light Solvent PA Eg: Tincture of Iodine (Antiseptic) -> Solution of Iodine in Alcohol ↓ Tyndall effect I I Solute Solvent ↑ Saturated solution -> Not much solute can be dissolved I Concentrated Solution -> Solute > Solvent I Dilute Solution -Solvent > Solute ~ Concentration of Solution = Amount of Solute - Amount of Solution  - Mass by % = Mass of Solute x 100 - Mass of Solution 40 g -> Salt - Solvent - Ques. Solution I 160 g - Water->Solvent -- Mass by %? C Sol - - n 40 X 100 40 + 160 SS - 40 x 100 - 200 = 20% Colloidal Solution - 1. Disperse Phase R A 2. Disperse Medium · Particle size ->1 nm ->10 nm - It appears to be homogenous but actually is heterogenous RM Eg: milk, starch solution ->Colloidal - Shows Tyndall Effect Separation of Components of a Mixture - · Dye from ink - Evaporation W Different colours from dye -> Chromatography ->Drug from blood PA Colour ↓ -> Pigment from natural colour - Cream from milk -> Centrifugation - sublime I Mixture of salt and ammonium chloride/naphthalene/anthracene -> Sublimation (solid to gas) I Two immiscible liquid -> Separating funnel ↓ oil in water ↑ Two miscible liquid ->Distillation ↓ (Acetone and water) ↳Boiling point is significant different  & If Boiling Point different less than 25 K -> Fractional Distillation Eg: Air Physical and Chemical Changes - Physical Changes: matter changes form but not chemical identity - · It is reversible C Eg: melting, shredding, boiling, chopping Chemical Changes: A chemical reaction forms new product SS Iron oxide layer deposition - / It is irreversible - Eg: combustion, rotting, rusting, digestion Burning of candle Both physical and chemical changes - - W Cutting of fruits Physical Milk turning into curd R Chemical A -> Thread: chemical change bi Wax: physical change RM / Behaviour uniformity: Gas 10% of glucose in water means: 10 g of glucose dissolved in I 100 g of 90 g of water water PA / Water can be separated by Chemical methods ~ Brass is a homogenous mixture / In sugar solution: sugar is solute, water is solvent I Brass is solution of molten copper in solid zinc I Blood and Sea are heterogenous mixture - Cooking of food and digestion of food: both are chemical changes C SS R A RM PA