IS MATTER AROUND US PURE? in 1 Shot | FULL Chapter Coverage (Concepts + PYQs) | Class-9th Chemistry
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🧪 Dive into the fascinating world of Chemistry with our one-shot coverage of "Is Matter Around Us Pure?" for Class 9. This video provides a comprehensive overview, encompassing key concepts and Practice Year Questions (PYQs), ensuring a thorough understanding of this essential chapter.
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📌 𝐏𝐇𝐘𝐒𝐈𝐂𝐒 𝐖𝐀𝐋𝐋𝐀𝐇 𝐅𝐎𝐔𝐍𝐃𝐀𝐓𝐈𝐎𝐍 𝐒𝐎𝐂𝐈𝐀𝐋 𝐌𝐄𝐃𝐈𝐀 -
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📌 𝐏𝐇𝐘𝐒𝐈𝐂𝐒 𝐖𝐀𝐋𝐋𝐀𝐇 𝐒𝐎𝐂𝐈𝐀𝐋 𝐌𝐄𝐃𝐈𝐀 -
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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!
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#IsMatterAroundUsPure #Class9th #PhysicsWallahFoundation #PhysicsWallah #CBSE #ClassthCBSE #Class9thScience #Science #Concepts #PYQ #Chemistry
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Namkin ka photo hta dijie
1 year ago wali one shot ke hi slides hai.
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Anyone is watching in june ?
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I
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12:49
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Delhi public school
jo jo es lecture ko summer vocation ki chutti me bekh raha vo like kar de😂😂🎉🎉
per mai bekh nahi rahi
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Who are watching in summer vications ❤
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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?
Ma'am please explain me in comment
Aare bhai itna Sara yaha per likhne se aacha aapni teacher se puch leta
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.
Mam aap ritik sir se saadii kar lo ❤❤❤❤❤ math or science ki Jodi ban jayegii😅
Nice
Pahle ja apni mummy ki setting karke aa
Meri mummy ki setting mere papa se hai teri mummy ki setting toh mere se hai 🤣🤣🤣🤣🤣🤣🤣🤣
Kya pata mam bhi shadi shuda na nikle
Mtlb muh h to bas bako
How can someone dislike chemistry when she's the teacher....😩🤍🫀
Me😅
She is very goooooooooooood teacher but I probably hate chemistry 😔
hehe
not kidding but this equation were the most troublesome
Me
@@annapurnajadahao8974savage😂
Ma'am ne majority wins bola aur mujhe mere class 8th ke civics ki yaad a gyi😂😂
To ham kya kare be😡
Tea/coffee is homogeneous
Cornflakes is heterogeneous
44.50
Legends are watching the video before 1 hour of their exam 😂😂😂😂😅
Bhai video hi 2hrs ki h
Aisa kyu direct exam hall me jakar dekho exam me full marks ayega
bhai tu exam me phone leke jata h
Legend's are watching this one day before exam at 1.75x speed😂😅
Bro Mai 2x me parh rahi ho jab bhi exam bhi nhi ahi aise logo ke liye ekya hai
2x bro😂😂
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Presentation lagao jisne July se start Kiya hai 😂😂
June ka mahena chal rha ha bhai 😂😂
Mam you teach very nicely
Thank you ma'am
44:58 tea/coffee- homogeneous
milk+cornflakes- heterogeneous
So what
🔮🔮Thankyouuu mam for this amazing and helpful lecture
Question practice 1:34:27 1. Ans: C ( Q = Non Metals, R=Metal,S=Metalloids)
Mam you are teaching so nicely. I love to learn in physics wallah and specially with you 😊👏👍🏻💯 I understood whole concepts.
or exhub se bhi jayda
Mam beautiful and crisp explanation of concepts. Thank you!!!🔷
thank ma'am for extremely amazing explanation the whole ch will be crystal cleared to me and thanks
Kon kon iss lecture ko 4- 5days mein khatam krta hai , anyone is here just like me😅
bhai hum tere jase nahi h 7 din ma khatam karte ha 😅
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.
Thank You So Much Mam! Really Helped A Lot! 💎✨❤
Kaun kaun class 11th suru karne se phele dekh Raha hai like karp
Mai😂😂😂
Thanks mam for the wonderful explanation ❤❤❤❤❤❤❤❤
1:37:49 Ans: B( A is suspension B and D are colloids Cis a solution)
1:19:12 mam I have a doubt.
When we will increase the temperature the water particles will evaporate and the water particles will be converted into gaseous form so therefore water level will decrease ,so more salt will settle down and the water will become more unsaturated.
Please reply on my doubt mam.
See, We dont need to boil the water in order to create space for the salt that is settled down.
when we increase the temperature -> water particles create space between. them -> and therefore, the salt which was settled down will now move in the space created by the increase in temperature! cool, right? hope this helped!
All concepts are crystal 🔮 clear ma'am
Thank u so much ma'am for the amazing explanation 💎❤
Yes very nice explanation 💎
If you stop the video at 29: 32 , you can see the ma'am ' s funniest face 😂😂😂😂😂
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Who is watching the more than two times present here😂🖐️✍️
Mujhse toh ek baar para nahi ja rha he😂😂😂
🔮🔮🔮crystal clear concept. Thanks a lot for all your efforts mam. I am very grateful to you.❣
Truee
True ❌ Truee ☑️
Yes ma'am mere sare doubt clear ho gye ✌️and also you are the best chemistry teacher ever ❤
Kaise ho aaplog jisko samaz me aaya o like kar
57:39 mam the size of particles of suspension is greater than 1000nm and size of colloids is between 1-1000nm
The video script covers the concept of solutions, suspensions, and colloids, as well as the properties of matter and chemical changes. It explains the difference between homogeneous and heterogeneous mixtures, solubility, the Tyndall effect, and the classification of pure substances into elements and compounds. It also discusses the properties of metals and non-metals, and the importance of understanding chemical properties.
Understanding Pure Substances and Chemical Properties
Pure substances are made up of only one kind of particle.
Chemical properties are based on the composition of pure substances.
Understanding the concept of pure substances and their classification based on chemical properties.
Understanding Pure Substances and Elements
Pure substances are made up of only one kind of particles
Pure substances can be classified into elements and compounds
Water is a pure substance and can be broken down into simpler substances through chemical processes
Understanding Elements, Compounds, and Metals in Chemistry
Water is not an element, it's a compound.
Water is made of hydrogen and oxygen particles.
Metals are good conductors of heat and electricity, and have a shiny appearance.
Understanding Compounds and Chemical Combinations
Jewelry made of metals and non-metals needs to have a shiny appearance from a distance.
Metals and non-metals have different properties, such as luster and sonorousness.
Compounds are substances made up of two or more elements chemically combined in a fixed proportion by mass.
Understanding Compounds and Mixtures in Chemistry
Water is a compound made of hydrogen and oxygen in a 1:8 ratio.
Compounds can be separated into their constituents by chemical processes.
Homogeneous mixtures have uniform composition, while heterogeneous mixtures do not.
Understanding Homogeneous and Heterogeneous Mixtures
Homogeneous mixtures have uniform composition and cannot be distinguished visually.
Heterogeneous mixtures have visible boundaries and can be visually distinguished.
Understanding the concept of homogeneous and heterogeneous mixtures is crucial for chemistry.
Understanding Solutions, Suspensions, and Colloids in Chemistry
Salt solution is made by dissolving solid salt in water.
Children often misunderstand the concept of solutions, suspensions, and colloids.
Solutions are made by dissolving a solid or liquid in a liquid.
Understanding Colloids, Suspensions, and Tindal Effect
Colloids and suspensions have different particle sizes, affecting their ability to scatter light.
The Tindal effect occurs when light is scattered by suspended particles, making the light's path visible.
The size of particles in a solution determines whether the Tindal effect will be visible.
Understanding Concentration of Solutions and Saturated vs. Unsaturated Solutions
Scattering light can make the path of light visible, known as the Tyndall effect.
Tyndall effect is observed when sunlight passes through a dense forest with mist containing tiny water droplets.
Concentration of solutions can be determined using the mass by mass percentage formula.
Understanding the Effect of Temperature on Solubility
Adding salt to water at different temperatures affects solubility.
Increasing temperature increases solubility, while decreasing temperature decreases solubility.
Solubility is the maximum amount of solute that can be dissolved in a solvent at a specific temperature.
Understanding Physical and Chemical Changes
At a specific temperature, the solubility of a substance in a solvent determines the maximum solute that can dissolve.
Physical changes involve alterations in the size, shape, or state of a substance, while chemical changes result in the formation of new substances.
Burning of a candle involves both physical (melting of wax) and chemical (formation of carbon dioxide, water, and vapor) changes.
Understanding Chemical Changes and Solutions
Chemical changes involve the burning of substances and the physical change from solid to liquid.
Applying concepts of solutions and identifying properties of substances based on their behavior.
Calculating the mass of solutions required to make a specific concentration of a substance.
Understanding Solutions and Solvents in Chemistry
Glucose is a plus mass of solvent, which is water.
The solution is 150 grams, and the solvent is water.
The mass of solution plus mass of solvent equals the total mass of the solution.
Understanding the Chapter Concepts
Chapter was about Matter Rounds Pure
Story was basically about Matter
Matter is now moving towards Chapter Three and Four
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Bhai itna exam mein bhi likh dena 😅
Mene kya kisi ne bhi shayad hi padha hoga 😊😂
Ik other people are cracking up at this
But i just want to let you know
Ty for typing so much for us
Is bande ne jitna likha hai utna hi shayad kafi, teacher ka explanation bhi nahi dekh na padega😂😂
You have an exam tomorrow, read the comment and pass the time😀😊
ok
.
She is tooo cheerful and bohut acche seh she teaches
Ty PW for providing quality of education to the students !!
PW is truly an emotion 🤌🤧✨
Mam, please aap hi physics aur biology padao
💎Ma'am you made all the concepts so clear! Thank you for your efforts! ^^
Ma'am u and Pranay sir teach so easily and funnily I just love ur explanations
kv sunil bhaiya se padhkar dekhna but wo shyd 9th ko nhi pdhaye hai yt pr
😊
Energy level✅
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Example✅
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Kon kon ajj dekh rha hai 😅😂????
Me to kal dekhunga
Ma to 18 Jun ko
Bhai mai toh kal dekh raha tha, ab toh bas mai pw ka watchtime bada raha hu.
Aaj matlab kya konse date
Ma
loved the session !
Loved ❌ Lovee😍 ☑️
🔦Tyndall effect and all other concepts are crystal clear 💎.Thank you so much Sanya Ma'am
Who are watching this lecture in 13 June 2024❤❤
Anyone is watching today
Mam very much thank you for working so hard for us❤❤and u teach very well❤❤❤❤
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@AbushadShaikh-bt8wb Session was good 💯😊
@Jack_Bhaiya
Great session 🎉❤😊
Legends are watching one day before exam
Mam you understand every sentence very well. Thanks mam for teaching us so much❤😊 if you have understood the entire chapter tought by mam ,then like it👍🏻.
HshC rich ghoshal to nachenge to bahut badhiya Bhai ki shadi hai math wale hai padhne ko kya kaam tha na ki shaadi ki tu hai na tu hai math and arithmetic mean I will get you in advance of cricket ki tu to hi nahi ho raha hoon aur ek hai usse hai padhne ke vaste to nachenge you in a Gaya tha bahut padho aur kya padha hai math and their paintings and arithmetic progression of painters and decorators contents of cricket retired in advance for taking the poet feels good morning sir I love you too meri hai
Thankyou ma'am for providing us this sprint series ❤
1:33:47
Q = is a non metal
R = is a metal
S = is a metalloid
thank you ma'am ❤❤this class is very helpfull for me ☺☺☺
😅
Anyone watching at end of June 🤣
44:14 how milk is heterogeneous mixture 🤔can anybody explain me pls😌
beacuse it has many mixture like protien, carbohydrate etc...
😢yes milk is heterogeneous mixture because in milk protein ,fat , carbohydrates are present which float in upper part but can't seem
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.
💎 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 .
I have a doubt that we can say that we can separate salt and water by boiling salt will remain and the water will be in the vapour form so then how can we say that in solution we cannot separate its constituents?
1:31:47 IN BURNING OF CANDLE BOTH PHYSICAL CHANGE AND CHEMICAL CHANGE ARE THERE🎉
Maam but in rainy water it has many bacteria so it can be heterogeneous or homogenous if
heterogeneous why?
Homogeneous why?
Please explain
Does bacteria get dissolved ib water?
No, so it is colloid
All concepts are crystal clear 🔮 ma'am.
Thank you for the outstanding session 💎
Mam your handwriting is just wow
Your way of teaching is just wow
Your voice is just wow
You just look like just wow
❤❤❤❤❤❤
shakal dek
Mam iodine have lustrous surface and iodine is a non metal
Queen 👑 of chemistry
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
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...
Kon kon summer vacation me dekh rha hai 😂 or apna syllabus complete Kar raha hai 😂😂😂😂😂
Mai
Me
Such a nice explanation 🎉 thanks for this explanation and i support you from my whole heart ❤ salute pw😊
44:55 tea- homogeneous mixture milk+cornflakes- heterogeneous mixture
1:31:45 both physical and chemical✨🕯️
Navodyan is here ,so please wakeup to reality 😂
Mam graphite which is a nonmetal . it is the good conductor of electricity
38:56
A is homogenous mixture
B is heterogeneous mixture
Correct 👍
Pw foundation is better then [MAGNET BRAINS]. 👍🏻
Don't compare
.😊
Please study don't compare
Both are best 👌 👍
Thank you mam !💎✨ it did help a lot
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44:48 tea / coffee is a homogeneous and conflakes and milk is heterogeneous
milk is colliod
@@LYRICSWALA1810 colloid appear homogeneous but it is heterogeneous so milk can be colloid or heterogeneous
sum doubts
1)chai mai dudh hota hai toh woh heterogeneus hua
2)dudh mai distinguish kaise karoge
3)sea water homogeneus hai ya fir heterogeneus
1)Chai mein water or milk mein koi speration boundary visible nahi hoti
2)(samajh nahi aya)
3) heterogeneous bhi hain or homo bhi in (case of heterogeneous) salt jada amount mein hone ke vajah se vo water se uski ek alag visible boundary hoti hai, or (in case of homogeneous) sea water mein bhot sari alag alag gases bhi mix hoti hain, jo sirf chemical method se seperate ho sakti hai,or uski koi visible boundary bhi nahi hoti.
Thanks so much ma'am for clear my concept
One day before exam 😅
44:53 Tea/Coffee - Homogeneous
Milk+Cornflakes - Heterogeneous
Thank you ma'am for such a great explanation
So ,we say A bus is unsaturated bus 😂because the conductor say (aane do aane do jgh h )😂😂😂😂
Mam you explained very well! I love to watch your lectures and really enjoy while studying 💗💎💎
🔦
1:31:46 both physical and chemical changes
Question practice
1.(c)
2.(b)
💎
The lecture is so elegant so beautiful just looking like a wow 😂❤❤
😂
air is solution or suspension or colloid ? because air is solution but it also shows tyndall effect in a room ,which is a property of suspension or colloid
Air is a colloid
the explaination was wonderful...hope we could see more videos like this in future
1:49:12 mam thank you Hume app ko bol na chahiye...❤
44:15 Mam how is milk a heterogeneous mixture??
We cant distinguish it from one another!
How??
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
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
1:00:22 maam colloids me hetero me stable kese hoga???
Legends are watching this video on 2x. Legends like kro
I completed this lecture please upload Atom and Molecules. It's a humble request. 🙏🙏🙏
It is already uploaded
@@Kajal-vt3vowhere?
Mam neev batch mein aapne kaha tha ki solids apni shape change nhin karte but gold ko hum thin sheet bana sakte hain
Mam ne bola tha solid but unke example me jo keel metal ka tha wah bhi toota usake bajaay bend ho gya
I am studying in 2023.
Time travel.....
A is homogenous and b is heterogeneous