IS MATTER AROUND US PURE? in 1 Shot | FULL Chapter Coverage (Concepts + PYQs) | Class-9th Chemistry

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1 year ago wali one shot ke hi slides hai.

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00:00​ - Introduction 02:05​ - Matter 06:10​ - Pure substance 13:49​ - Elements 21:47​ - Metals,Non-metals and Metalloids 28:24​ - Compounds 36:54​ - Homogeneous and Heterogenous Mixture 45:48​ - Mixture and Compounds 49:49​ - What is a Solution? 52:27​ - Alloys 56:09​ - Solution,Suspension and colloids 1:09:38​ - Concentration of a solution 1:13:47​ - Saturated and Unsaturated solution 1:22:35​ - Solubility 1:24:26​ - Physical and Chemical changes 1:33:24​ - Questions practice ... ❤...

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00:00 - Introduction 02:05 - Matter 06:10 - Pure substance 13:49 - Elements 21:47 - Metals,Non-metals and Metalloids 28:24 - Compounds 36:54 - Homogeneous and Heterogenous Mixture 45:48 - Mixture and Compounds 49:49 - What is a Solution? 52:27 - Alloys 56:09 - Solution,Suspension and colloids 1:09:38 - Concentration of a solution 1:13:47 - Saturated and Unsaturated solution 1:22:35 - Solubility 1:24:26 - Physical and Chemical changes 1:33:24 - Questions practice

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Me Because my exams are starting from 19th September 😢

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My exam is on 14 September and today I am revising chemistry and tomorrow I will revise physics in morning and biology in night because tomorrow is my preparatory leave

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00:00 - Introduction 02:05 - Matter 06:10 - Pure substance 13:49 - Elements 21:47 - Metals,Non-metals and Metalloids 28:24 - Compounds 36:54 - Homogeneous and Heterogenous Mixture 45:48 - Mixture and Compounds 49:49 - What is a Solution? 52:27 - Alloys 56:09 - Solution,Suspension and colloids 1:09:38 - Concentration of a solution 1:13:47 - Saturated and Unsaturated solution 1:22:35 - Solubility 1:24:26 - Physical and Chemical changes 1:33:24 - Questions practice 1:49:10 - Thank You Bacchon!

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[@Technofleet-fv3fy]

𝐓𝐞𝐫𝐦𝐬:- i. Pure substance :- Pure substances are the substances which are made up of only one kind of particles. ex: Oxygen, water. Characteristics of pure substances:- i. Pure substances are homogeneous in nature. ii. Pure substances have fixed set of properties. iii. Pure substances cannot be separated into other kinds of matter by physical process. Elements :- Elements are the pure substances which cannot be broken down into simpler substances by any physical or chemical process as they are made up of only one kind of particle. e.x - oxygen, nitrogen etc. Metals, Non metals, mtellaloids: Boron, arsenic, antimony, silicon, germanium... Have Properties intermediate between metal and non metals. Compound - Compound are the pure substances which are made up of 2 Or more elements chemically combined together in a fixed proportion by mass. e.x - CO2 , H2O etc. Characteristics of compound:- i. Elements in compound are chemically combined together in a fixed proportion. ii. The properties of compound are very different from it's constituent elements. iii. Compound has fixed melting and boiling point. iv. Constituent elements which made up the compound can be separated by chemical processes. ex water by electrolysis. v. Compounds are homogeneous in nature. Mixture:- Mixture is an impure substances which consist of 2 or more elements or compounds not chemically combined together.e.x Tea, Air, milk etc There are two types of mixture :- i. Homogeneous mixture ii. Heterogeneous mixture 1•) Homogeneous mixtures: Those mixtures in which substances are completely mixed together and are indistinguishable form one another are called homogeneous mixtures. It has uniform composition. It has no boundary of separation between the various constituent.

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[@ShreeOmProperties]

44:17 TEA [Homogeneous Mixture] The resulting mixture looks uniform because the dispersed particles or molecules are too small to be seen individually. There are no visible layers or separate phases.When you taste the tea, the uniform distribution of the components means that each sip contains the same proportions of water, milk, tea compounds, and sugar. This is why it tastes the same throughout.

[@rakeshyadav5071]

TimeStamps - 00:00 - Introduction 02:05 - Matter 06:10 - Pure substance 13:49 - Elements 21:47 - Metals,Non-metals and Metalloids 28:24 - Compounds 36:54 - Homogeneous and Heterogenous Mixture 45:48 - Mixture and Compounds 49:49 - What is a Solution? 52:27 - Alloys 56:09 - Solution,Suspension and colloids 1:09:38 - Concentration of a solution 1:13:47 - Saturated and Unsaturated solution 1:22:35 - Solubility 1:24:26 - Physical and Chemical changes 1:33:24 - Questions practice 1:49:10 - Thank You Bacchon! -------------------------------------------------------

[@ShreeOmProperties]

44:17 DOUBT QUESTION In our previous discussion about matter, we learned that matter is composed of particles. When a substance, like sugar, is dissolved in another substance, such as water, the sugar particles separate and spread among the water molecules. In this chapter, we are studying the chemical properties of matter. You have explained that mixtures are substances made up of two or more elements and compounds that are not physically combined. You have also explained that homogeneous mixtures are those mixtures in which substances are mixed and are indistinguishable from one another. An example of a homogeneous mixture is tea, which is made up of various constituents (like tea leaves, sugar, milk, ginger, and some other ingredients). So, can we say that the tea constituents have separated into intermolecular spaces between the water molecules? When preparing tea, heat is absorbed or released, but a mixture doesn't require any heat for its formation. Since a homogeneous mixture is also a type of mixture, why are we considering a homogeneous mixture as a mixture?

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Ma'am please explain me in comment

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[@kisternoob8041]

Bro this question is kinda dumb but since it's a doubt lemme clear it for you bro we know a mixture consists of more then 1 type of element and let us take the example of tea we have various solvent and if you have ever had 1 you should know that ginger never dissolve and we need extra heat to make tea ik it's dumb but according to me the particles of the constituent of the tea never dissolve in intermolecular spaces and bro it's just an example why are you taking it so seriously but still if possible I would ask from my teacher and let you know if you want

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12:49

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0:0 introduction 02:05 matter 06:10 pure substance 13:49 elements 21:47 metal non metals metalloid 28:24 compound 36: 45 homogeneous and heterogeneous 45:48 mixture and compound 49:49 solutions 52 :27 alloys 56:09 solutions suspension and colloids 1:09:38 concentration of a solution 1:13:47 saturated and unsaturated solution 1:22:35 solubility 1:24:26 physical and chemical changes 1:33:24 question practice 1:49:11 thank you bachoon!

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⏳ TimeStamps - 00:00 - Introduction 02:05 - Matter 06:10 - Pure substance 13:49 - Elements 21:47 - Metals,Non-metals and Metalloids 28:24 - Compounds 36:54 - Homogeneous and Heterogenous Mixture 45:48 - Mixture and Compounds 49:49 - What is a Solution? 52:27 - Alloys 56:09 - Solution,Suspension and colloids 1:09:38 - Concentration of a solution 1:13:47 - Saturated and Unsaturated solution 1:22:35 - Solubility 1:24:26 - Physical and Chemical changes 1:33:24 - Questions practice 1:49:10 - Thank You Bacchon! plz like kar do yaar

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44:58 tea/coffee- homogeneous milk+cornflakes- heterogeneous

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So what

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Question practice 1:34:27 1. Ans: C ( Q = Non Metals, R=Metal,S=Metalloids)

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1:37:49 Ans: B( A is suspension B and D are colloids Cis a solution)

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Both physical and chemical change 1:31:40

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Tea/coffee is homogeneous Cornflakes is heterogeneous 44.50

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mam , bhelpuri is a mixture so , how can we separate lemon juice from bhelpuri

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we can see that most of the matter around us exist as mixtures of two or more pure components, for example, sea water, minerals, soil etc.

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Thankyou for your replies🥺😊

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Queen 👑 of chemistry

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Legends are watching one day before exam

[@studyonly5841]

44:15 Mam how is milk a heterogeneous mixture?? We cant distinguish it from one another! How??

[@rimjhimgupta7449]

When we boil milk .. after some time we see a thick layer of milk fat ( malayi) on the top surface. It means we can distinguish it's constituent

[@Dileepdubey001]

Milk is a mixture because it is a solution and solutions is a form of mixture so it is a mixture I hope you understand thanks

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The maximum amount of solute which can be dissolved in 100g of solvent at a specificd temperature is called the solubility of that solute in that solvent at that temperature

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The April Theses were a series of ten directives issued by Lenin upon his return to Russia in April 1917 from his exile in Switzerland. These theses outlined Lenin's vision for the future of Russia and the Bolshevik Party. Key points from the April Theses included: * End of the war: Lenin called for an immediate end to Russia's involvement in World War I. * Transfer of land: He proposed that land be transferred to the peasants. * Nationalization of banks: Lenin advocated for the nationalization of banks. * Soviet power: He argued that power should be transferred to the Soviets, councils of workers and soldiers. * Communist Party: Lenin suggested that the Bolshevik Party should rename itself the Communist Party to reflect its radical aims. The April Theses were a significant turning point in Russian history, as they provided a clear and concise plan for the Bolsheviks to seize power and transform Russia into a socialist state.

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6:20 😅 pw prmote amul and tata🎉🎉🎉😂 Edit: thanks for zero loke

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Mam you are teaching so nicely. I love to learn in physics wallah and specially with you 😊👏👍🏻💯 I understood whole concepts.

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💎💎💎💎Thank you ma'am for such clear and great explanation😊

[@KP_shorts1608]

Mam , Is strength of solution not in class 9 ? But as per 2024 book there is also question on how to find strength of solution.so can u please tell that also

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It's not strength it's separation... And I think it won't come in our exams as the topic is not there in the book... But it depends on teachers mood if they want they can give...

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thank ma'am for extremely amazing explanation the whole ch will be crystal cleared to me and thanks

[@Keepgoing5963]

44:48 tea / coffee is a homogeneous and conflakes and milk is heterogeneous

[@LYRICSWALA1810]

milk is colliod

[@Keepgoing5963]

@@LYRICSWALA1810 colloid appear homogeneous but it is heterogeneous so milk can be colloid or heterogeneous

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Yesterday was my chemistry paper and i didn't prepared but by seeing only this lecture i got 19 marks out of 20 in my test paper ❤❤❤ thanks mam

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Yes ma'am mere sare doubt clear ho gye ✌️and also you are the best chemistry teacher ever ❤

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So ,we say A bus is unsaturated bus 😂because the conductor say (aane do aane do jgh h )😂😂😂😂

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Doubt:- agar hum sand or water ko gholenge tho kichad banegi 30:27...😎

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Mujhse toh ek baar para nahi ja rha he😂😂😂

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🔮🔮🔮crystal clear concept. Thanks a lot for all your efforts mam. I am very grateful to you.❣

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Truee

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True ❌ Truee ☑️

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💎 all clear mam I personally love your explanation and thank u mam for such a mind-blowing explanation in not only this chapter but for all the chapters you have covered .

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1:31:46 burning of candle is both physical and chemical change

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Legends watch one day before exam😎

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Mam neev batch mein aapne kaha tha ki solids apni shape change nhin karte but gold ko hum thin sheet bana sakte hain

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Mam ne bola tha solid but unke example me jo keel metal ka tha wah bhi toota usake bajaay bend ho gya

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2024? And October?

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Bhai video hi 2hrs ki h

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Bhai tu exam time me dekhna full marks aege 😅😊❤🎉❤

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At night😅

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All concepts are crystal clear 🔮 ma'am. Thank you for the outstanding session 💎

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[@TantrickBaba-bj8hf]

Buring of candle is chemical change where melting of candle is physical change

[@BhagywatiMaurya8808]

Thanks mam tomorrow is my science exam....❤❤ your explanation is very helpful for us....

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1:10:18 5 spoon one is concentrated and 2 spoon one is diluted

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If you stop the video at 29: 32 , you can see the ma'am ' s funniest face 😂😂😂😂😂 Just for injoy 😅 Jo Dekha , vo like Karo

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Mam's face be like :- 🥴🥴🥴🥴🥴🥴🥴🥴🥴🥴

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Legend 😅😅😂😅😅😂😅😂😅😂😅😂😅😅😂 52:39

[@piyushbhushan8925]

Tea & coffee is homogeneous mixture and milk + cornflakes are heterogeneous mixture

[@sadulislam1234]

44:14 how milk is heterogeneous mixture 🤔can anybody explain me pls😌

[@snashorts4578]

beacuse it has many mixture like protien, carbohydrate etc...

[@StudyHome-dn9yg]

😢yes milk is heterogeneous mixture because in milk protein ,fat , carbohydrates are present which float in upper part but can't seem

[@SilentSign4077]

milk is a mixture of fat carbohydrate and protien

[@sadulislam1234]

Thanks to everyone ❤

[@ddclub5652]

i didn't understand the properties of solution,suspention and colloids mam can u help me can u make a video on this topic .... i find these topic as very difficult to learn and understand.... please can u explain them again

[@codewmee]

See, types: solution has uniform chemical composition toh wo honge homogenous and suspension and colloids are heterogenous and size of particle: solution me ati ati chhota that means less than 1 nm(nanometer) and suspension me greater than 1000 nm aur colloids me between 1-1000 nm, now tyndall effect is? the scattering of beam light...solution se beam of light pass hoti hai bina scattering and suspension me light beam scatter hoti hai and same with the colloids......stability matlab when we leave solution, suspension and colloids undisturbed aisa nahi hai ki solution me jo solute hai wo niche baith jayega (the solute won't settle down on the floor of the beaker or anything) that means solution is stable and colloids are also stable (but remember they can be settled by forced sedimentation) and suspensions are unstable(mtlb they settle down)...........now filtration: solution cannot be filtered by filter paper(why? because the solute passes through it) suspension can absolutely be filtered by filter paper(why? because the stuff doesn't pass through the filter paper making the two substances separate and hence filtered) and colloids cannot be filtered (as they pass through the filter paper)..... some other points: solution is mostly transparent but may be coloured or colorless and suspension is either opaque or translucent anddd colloids are translucent!

[@Ipshitaaa]

W for the efforts ❤​@@codewmee

[@lagansharma7097]

​@@codewmee he or she doesn't even say a thank you to you 😓👍🏻🌻

[@codewmee]

@@lagansharma7097 no worries though! keep studying!

[@mkstudiesandplayzone1978]

Raat ke das baj rhe hai is chapter ke baad physics aur ka bhi saara one shot dekhna hai aur kal paper hai😢😢

[@RachitGupta-z7u]

Same bhai or ab toh 12 bj rhe hai

[@LFLearningFacts]

Mam your handwriting is just wow Your way of teaching is just wow Your voice is just wow You just look like just wow ❤❤❤❤❤❤

[@Bhavishay.g_9216]

shakal dek

[@kusumlata6678]

Nice class,😊 vote please

[@JASVINDERAKAUR]

Who were watching this on july , August 2024 😂😅

[@kumarmukesh5246]

Your are most beautiful and understanding teacher that I ever seen 😊😊

[@microspacetravels8733]

loved the session !

[@Sunwukong2516]

Loved ❌ Lovee😍 ☑️

[@Theftgamerz123]

Anyone 2024 - 2025 batch Like 👇

[@anugupta3469]

Beauty with brain ❤❤

[@Vaibhavi_2010]

Que 1 Ans:- tea and coffee is homogenous mixture Que 2 Ans :- milk nad choco is heterogeneous mixture. Thank you🙏

[@sudeshjangra9146]

Is anyone watching in September 😂

[@cute-bit]

Kon kon iss lecture ko 4- 5days mein khatam krta hai , anyone is here just like me😅

[@Bhavishay.g_9216]

bhai hum tere jase nahi h 7 din ma khatam karte ha 😅

[@infinityspins7072]

Mee

[@Piytech6980]

Pw foundation is better then [MAGNET BRAINS]. 👍🏻

[@annapurnajadahao8974]

Don't compare .😊

[@arunimatyagi2603]

Please study don't compare

[@AESTHETIC_YT_CREATOR]

Both are best 👌 👍

[@TheCreators2.0.]

Anyone watching in September? 👍

[@user-uz2tv4yq7q]

I completed this lecture please upload Atom and Molecules. It's a humble request. 🙏🙏🙏

[@Kajal-vt3vo]

It is already uploaded

[@Gautam__up57]

​@@Kajal-vt3vowhere?

[@ebrahim6949]

Mam very much thank you for working so hard for us❤❤and u teach very well❤❤❤❤

[@AbushadShaikh-bt8wb]

😮

[@Sunwukong2516]

​@AbushadShaikh-bt8wb Session was good 💯😊 @Jack_Bhaiya

[@Ashu-ff-No-1-YT]

Mam ne itna accha❤ padhaya phir bhi itne Kam like kyu😢

[@DevTyagi-je8hk]

When mam said voh rhi nitrogen ye rhi carbon dioxide😅

[@rituch9763]

Mam beautiful and crisp explanation of concepts. Thank you!!!🔷