Master Metals and Non-metals in One Shot | Chemistry - Class 8th | Umang | Physics Wallah
HTML-код
- Опубликовано: 19 окт 2024
- 📝 For complete notes of Lectures, visit Umang Batch in the Batch Section of PhysicsWallah App/Website.
📲PW App Link - bit.ly/YTAI_fo...
🌐PW Website - www.pw.live
▶️Complete CLASS 8TH - SCIENCE ONE SHOT Lectures - • Science - Class 8th NCERT
In this lecture of Umang batch, Sunil sir is going to teach you the chapter Metals and Non-Metals.
Topics covered in this lecture are-
•Properties of metals and non-metals
•Facts to remember about metals
•Uses of some metals and non-metals
•Reaction of metals with oxygen and water
•Activity series of metals
•Corrrosion
and some questions for practice.
There are many other important chapters that we are going to cover in upcoming videos for class 8. Stay tuned with PhysicsWallah Foundation.
----------------------------------------------------------------------------------------------------------------------
NOTE: This batch is completely FREE, you just have to click on the "BUY NOW" button for your enrolment.
🔴 Details about the batch -
• Recorded Lectures for Class 8th Students.
• PDF Notes of each Lecture will be available on the PW App.
• Weekly Lecture Planner will be uploaded on PW Foundation Community Page.
• Classes will start from 10th January and we will cover the whole syllabus by 10th March.
🎦 Eight Lectures per week will be uploaded.
----------------------------------------------------------------------------------------------------------------------
📌 PHYSICS WALLAH OTHER CHANNELS :
🌐 PhysicsWallah - Alakh Pandey : bit.ly/Physics...
🌐 Competition Wallah : bit.ly/Competi...
🌐 JEE Wallah : bit.ly/JEEWallah
🌐 PhysicsWallah Foundation : bit.ly/Physics...
🌐 NCERT Wallah : bit.ly/NCERTWa...
🌐 Defence Wallah-NDA : bit.ly/Defence...
🌐 PhysicsWallah English : bit.ly/Physics...
🌐 BSEB Wallah : bit.ly/BSEBWallah
📌 PHYSICS WALLAH SOCIAL MEDIA PROFILES :
🌐 Telegram : bit.ly/PwTelegram
🌐 Facebook : bit.ly/PWFaceb...
🌐 Instagram : bit.ly/PWInsta
🌐 Twitter : bit.ly/PWTwitt...
For any queries or complaints Visit :
For PW APP : physicswala.pa...
For PW Website : www.physicswal...
#Science #Class8 #Umang
![Who Wrote a Short Story That Seriously Disturbed a Teacher? | Dirty Laundry x Smosh [Full Episode]](http://i.ytimg.com/vi/bvHAy_rKoEI/mqdefault.jpg)
I saw first time such a teacher who teach with questions 👍👍👍👍
how
PW ALL TEACHER ARE BEST
No
Sir 9 ka batch kab sa suru hoa ga
I am in class 10th and still watching Sunil Sir's Chemistry lectures because, literally i realised that there is no teacher like Sunil sir,
Sir If u would teach class 10th, students can learn chemistry like a magic .
BTW thank u so much Sunil sir.❤️❤️
Good bro
Also me
Bhai video tow Puri Dekh lai sir na kaha tha ki vo 10th mai bhi padhta hai 😂
17:25 ANS silver is better conductor of electricity but being expensive, is not used in making cable
But also due to its Ductility.
Why dont use in made cabale
@@DineshChauhan-dj3foit not use a cable uh cuz it a very expensive ah
it's not used in making cable wires as it is very expensive
Because aluminium is expensive than copper (7:35)
Thk ❤❤❤❤brother
Hello juniors 🙂
Class 8 ko Acche se padhna best se kyu kii 50-75% Topic class 10 mai cover hoga
Specially :light chapters.... 🙂
NOTE: Maine toh Bhut mazje kiye the 8 mai 10 mai 2X mehnt krna per raha hai
😊
Thanks Broo 🤗🤗
Tnx
Thanks bro may God fulfill your dreams
Thx bro❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤😂😂🎉😢😢😢😢😢😢🎉🎉🎉🎉
heating effect of electric current is seen more in copper than aluminum so copper is used in case of low voltages also because it has low melting point.
Bahut bhadiya babua kon sa class ma padtha ho babua 😂
A+b ka hole sq kya hoga babua
Km@@38shivanshzalavadia6f6
U😅6y😅yy@@wiweisi
after watching the entire video i just now realised that is it for 8th grade.. but I am in 10th grade 🤦🤦🤦🤦🤦
Really you watched the entire video thinking that the video is for 10th
Ohh so sad I am in 7th grade and I am taking 8th grade syllabus.
Wtf
@@bhavanisingh8991 me in class 6 and now i had completed 8th syllabus
☺☺
@@FALLEN_SLAUGHTER nice i am also in class 8th complete 9th syllabus just revising
Sir ne kitni acchi tarike se padhaya hai mein to fan hi ho gaya sir ka
Sunil sir literally stood and thought us continuously for 1 hour and 24 minutes, respect to sir
he did take rest because pf cuts and edits in between but still it is a very good achievement also not being nosy but it is taught
No 1 hour 24 minutes and 1 second
@@aneeksshorts2092 say say [ chut*ye]
@@aneeksshorts2092 🤣
Alhak sir use to stand for 1 hour without fan and explain on white board
Metals are generally good conductors of electricity. The conductivity of a metal is the ability to allow electricity to pass through it. Since aluminium is a metal with low resistance and good conductivity it is used in electrical wires.
Then the copper is allso the good conductivity why it is not use
beacuse there are not many electrons moving in it
@@ramachandrabollur2915
@@ramachandrabollur2915 because copper is harder than aluminum (aluminum is a soft metal ) and it expands a lot when over heated and it will be heated as it is a great conductor of heat and electricity .I think this may be the reason
Noo
The answer is aluminium conducts electricity with very high power.and if it will be used in home,the electrical appliances may blast or catch fire due to high power.
And according to me this is the reason.😅😅
Sir u are the one of the best educator of PW
Then what about ritik sir?
Ritik sir is best ❤❤❤
1:04:47 sir barium is missing!!
🔴Aluminum is cheaper than copper and also it is light weight so they can use in outdoor.
*We use copper in the house wiring because copper conduct electricity better than aluminium. Due to which power is saved so that money is also saved.*
*copper has less resistance than aluminium*
🔴 *Silver is too costly so it cannot be used as wire.*
❤❤❤
Teue
Right
I think aluminium jaldi tot jata hai agar usko wire me bnaya jaye
Silver is good conducter of electricity it is expensive and electricity go faster so it can burn wires
Sir concept crystal clear😊
yes bro
You way of teaching is awesome.
Thank You Sunil Sir.
0:15 great intro
Copper is a preferred wiring for the our home over aluminium because it is of use and ability to effectively conduct electricity it is more stable durable performs better than aluminium wires . Cooper wire has low level of resensitivity and also good conductor of electricity.
Aluminium has 61% of copper conductivity . The cross section area of an element in conductor should be 56% largest then copper to carry the same cutting the need of to increase the thickness of aluminium wire restrics it used in many appliance such as small motors and automobiles. It is also cheaper than copper.
Very impressive lecture by sunil sir experiment and chemistry I am from neev 2.0 but study 8th class basic chapters
High Respect
Sir what a entry 😇😇
Aapka introduction style is awesome 👌🏻👌🏻
Sir entry op 🙃🙃
Starting me hi maja aa gaya 😎😎
Tensile strength of copper is twice that of aluminum, which makes it ideal for electrical conductivity at home. On the other side, it is not a good choice for high voltage lines. This is because high voltage line transmissions involve lots of bending of the cable when doing installation.
❤
We don't use silver wires at home beacuse it is very expensive metal but a really good conductors and the second reason is due to its reactivity
And the not for theif😂😂
Hi
@Harshul who are you
@@piyushpunjal3438 stranger duh 😂
Hi diksha your answer is correct I think
Aluminum is a common material used in the construction of electrical wires. Unfortunately, aluminum wiring is not as strong as copper wiring, and it has a higher thermal expansion coefficient.
Sir , aluminium has a significantly higher specific electrical resistivity than copper.This difference is highly relevant for power cables.Aluminium conductor requires 56% larger cross-sectional area than copper for same current carrying capability.
Hi, where are you from😊
17:25 because silver oxygen se react karta hai
Really very satisfied with your way of teaching, detailed concepts out of NCERT....very very helpfull for those who wants to learn extra ordinarilly
15:25
You are right
really
Copper is preferred wiring for our home over almunium because of its ease of use and ability effectively conduct electricity and copper is also previous than aluminium
Copper is a good conductor of heat but we use aluminium at transmission lines
The main reason is cost
16:30 Sir Indium भी alkali metals में आता है क्या?
Copper is the preferred wiring for your home over aluminum because of its ease of use and ability to effectively conduct electricity. It is more stable, durable, and performs better than aluminum wires. Copper is known to have better Conductivity than Aluminium.
Aluminum is preferred in overhead power cables because it is a good conductor, so it can transport current with minimal losses while also being lightweight enough to not need the large support structure
Oooo
Thank you so much sir ur way of teaching is great 😊👍
1:01:54 Sir apne kya bola tha girl... 😂😂😂
Sunil 'OP' Sir 🔥🔥
1:01:55 sir girlfriend bol rhe the🤣🤣
😅
Yas
😮
@@Suryagaming24
He gives very amazing example 😊😊
I have one more trick of reactivity series
potassium - please
sodium - stop
calcium - calling
magnesium - me
aluminum - a
carbon - cute
zinc - zombie
iron - instead
tin - try
lead - learning
hydrogen - how
copper - copper
silver saves
gold - gold
platinum - platinum
helium - helium
like me if you are agreee
👇
🤣nice
17:15 We don't use silver as the wires because it is highly expensive then other metals like copper and almunium
Nice explanation sir thankyou so much 😀
No silver's wire are cheap
@@Renu132 how can silver be cheaper than copper? It cant be the jwellery are also expensive when it comes to silver
Though silver is a very good conductor of electricity but still that is not used in electric wiring primarily due to its cost. It's very expensive compared to the widely used wiring material copper. Another reason for not using silver is that , it oxidizes easily and tarnishes when it comes in contact with air.
maybe it is soo much rare
Mazza aaya
Thanks sir for teaching us for free!!
Who is watching in June and July 2024
Me
💯💯 qualified teacher.....and we luck that we are study from chemistry king🥀🥀💯💯🤟🤟
Why every good teacher can only be found online, why can't our school teachers teach like this.😐
Q.1 07:13 Ans. Copper is the preferred wiring for our home over aluminum because of its ease of use and ability to effectively conduct electricity. Remember that aluminium conducts less well when we compare it with copper but copper is comparatively heavier The density of aluminium is only one third of the density of copper so the light weight of aluminium is the main reason for using aluminium instead of copper in overhead connections.
Bahi itna google me se dekh ke mat likha kar.
@@anjusingh3338
True
😂😂
Potassium - karina
Sodium - ne
Calcium - car
Magnesium - mangvaye
Aluminium - alto
Zinc - zenolt
Iron - ferari
(Tin)
Lead -phir
(Hydrogen )
Copper - kyu
Mercury - ho gayi
Silver - angry
Gold - aunty
This is my technique for learning reactive series of metals
It was just an amazing experience to learn in this way with you.
But please don't use red colour pen as we cant see whats written clearly.
JUST EPIC EXPANSION
Sir ...why is tin not present in the reactivity series of metals ?...and also some websites mention carbon in the reactivity series ......and sir how to remember this chemical reactions...for exams ?
we dont use silver as the wires because it is very expensive compared to other metals like aluminum and copper...^^ very nice explanation thank u so much^^
Silver are cheap too use in metal compare to gold for reflection
Also that they are soft and have to be alloyed with copper for a longer time durability
epic line : Yeh apko Pata hone chahiye😂
vai the style of saying 😂
But literally very good explanation ❤
Happy teacher's day sir ❤
He give us very amazing example 😄
Sir Jo alluminium hai uska weight Jo hai wo Kam hota hai jaise 1kg of copper jitna amount ka hoga utna ammount ka Alluminium hoga 0.33 kg agr hm Alluminium ke amount ko double bhi karde to bhi Alluminium ka amount hoga 0.66 joki 1\2 ammount of 1kg of copper ka hai ''sir it is the actual reason why Alluminium are not used in our home😇''
THANKS 👍
16:42
According to my knowledge so far amd NCERT CLASS 10 Science- Chapter-Metals and Non-Metals , Gold is the most ductile Metal
Yes you are right ...gold is a most ductile metal because with 1g of gold we can make 2km long wire ....but don't know what's wrong with that
U are the best teacher whom I've found to improve my chemistry😊
Beta answer do thik hai 7:20
Aluminium wire will be much thicker but it will be lighter compared to copper since the density of aluminium is only one third of that of copper. The conductivity to weight ratio of aluminium is better than that of copper that is why we prefer aluminium in overhead power connections.
I understand whole chapter thank you so much sunil sir☺️☺️
Though silver is a good conductor of heat but it is not used in making electric wire as it is very expensive . silver is a noble metal and it is used in making jewelry it is also used in electroplating and in making high Value coins that is why silver is not used in making electric wires. 17:14
That "Sundar Kanya" Example was sooo good sir pura samajh aagya 😂💗🙏
Tere baaton se lag rha hai tu nalla hai
Madarjaat ghosi sika
😂😂😂😂😂 bro real pura Nalla lol
Girl..😂
@@DaCritic. 😂😂🤣🤣
PW is not a company It is a Emotion 🔥🔥
Bro a nahi an hoga
@@studyrestudy engrez ke aulad sorry don't take seriously.
You are fantastic,brilliant,genuine, gentle,and no words to express you sunil sir very nice teaching
7:32 it is because copper have low melting point
Aye ❣️Now me in 9th 😌
But attending this whole lecture for revision by Sunil sir 💞
I am in 7th and studying for 11th
@Akshat Singh aap kyun padh rahai ho 10th k liye ...i mean aap toh abhi 8th mein ho na...10th ko abhi bhout time hai....
same hame kaha last year ese one shot mile thein ???
Currently in 9th about to go in 10 watching it for buliding concepts😃......such a g8 channel was not available in our times.......✌️
@@alizahkhan1011 he's lying
We don't use silver wires in place of aluminium or copper wires because silver is a very good condector of electricity and if the electricity flow very faster then there will be held a spark.
also , silver is not cheap
@@sayinglearning54 also , stealing bhi jyada hogi
19:08
@@sandeepmathur14988:02
@@sayinglearning54the answer simply that silver is expensive
Silver wires are expensive in comparision to that of copper and aluminium. copper and aluminium also does a good job in transferring elctricity that's why we prefer copper and aluminium over silver.
I have a MATHS RUclips channel named as "Maths Ki Ghanti". Your way of explanation is the best one. Thanks to share knowledgeable content 😊.
i can say physics wala is better thab byju's and toppr ....🤩
Yes
aluminium wires is not used in house wiring because Aluminium has higher resistance than copper and needs lots cross sectional area in comparison to the copper and due to the resistivity they get heated and leads to electrical fires, And also due to it's light weight, which is a very important thing for transferring high voltage power.
23:37 is very funny😅
Your Teaching Sliks are much better than our school Teacher
Thank you For giving Quality Seasion
RIP English
@@arjundedha6879 Thanks jara hame bhi apke English classes padha do ham bhi English Sikh jayege
17:23 We can't use silver wire because it expensive while the copper wire is cheapee than silver wire
Also copper wire is used in house as it is affordable n conduct better electricity than aluminum..
22:31 Answer is D) i and iv
Thank you so much sir u make the chemistry very interesting and easy for us..👍🙏
i like your teaching capacity .i am really happy for your teaching .
17:35 because silver is more expensive and more sensitive to oxidation
17:22 Silver Wires are not used for making wires as silver is a very rare, hence costly metal. Also, silver is on the heavier side of metals.
Awesome teaching 😇
love you Sir ❣️
I think we use copper and aluminium wire instead of silver wire(which is best conductor of electricity) because silver wire is more expensive .
Copper wire are not used insted Overhead alumiNium wire becasu its melting point is low so it can melt or if we use aluminium wire then our applinces does not get sufficient electricity as it has high resistance
We use aluminium as the overhead power cable instead of copper because
Aluminium is
-Light weight
-cheaper
And the silver is not used as a electrical wire as it's very expensive !! And copper in compare is cheaper !!
Thank you sir for teaching us !!
Yàààà bro
25:27(ans-question-2) {phosphorus - solid room temperature , lustrous }
cou'z silver is a very expensive metal and it's very conductive though thats why we cant use silver wires for overhead cables etc.....
and i would like to conclude my comment with *i have completed my journey to find the best teacher in the world!!!
thank you so much for explaining......
Watching this at 3am really helped me!! Now let's hope for the best in the exam ❤
All the best bro😅
@@ProVoltsy Thankyou Bro!! My paper went really well ❤️🩹
So much respect to you sir 😍
Thank you soo much sunil sir😇
You'r the king of chemistry.
My favorite techer of chemistry ❤️
Teacher ki spelling wrong hai
@@xx_bhupendra_pal_xx4203 tum log wahi topper ho na Jo bas comments padhte padhte spelling check karte rehte ho......yaar feeling samjho.....😒take a chill pill
@@manjuchoudhary3250sahi bola bolti band kr di sare toppers ki 😅😅😅😅😂😂 😊😊
@@Radha8467-c4 😎😉backbench pe baith ke savage reply hi toh sikhe hai😄
Excellent teaching sir Ji 🎉❤❤
18:5 sir made perfect circle
17:32 the answer is that silver is very expensive though it was not used to make the wires of it
The Only teacher who want his students to really be successful ❤️❤️❤️
Puri physics wallah Sab ke Sab
SAB TEACHER CHAHATE HAI KI UNKE STUDENT SUCCESFUL HO
@@ssgamers6967 Jo mujhe school me padhate hai vo Nahi chahte
Jada nhi ho gya , badi badi bate mat karo
@@yateenff4182 Abe tujhe kya
Aluminium has a significantly higher specific electrical resistivity than copper. This difference is highly relevant for power cables. Aluminium conductor requires 56% larger cross-sectional area than copper for same current carrying capability
Silver can't be used as wires or cables because they are very costly as compared to copper and aluminium wires..
Cr7 siuuuuuuuuuuu any Ronaldo fan
Bro i have an exam tomorrow and I’m watching this now😭
But i will still manage to get good marks because of physics wallah 🙂🙂
From which school 🏫
Hiii
I love you
bro exam kaisa gaya?
same here bhai
Stability: Aluminum wire is very easy to fabricate, thus making the resistance large, reducing the weight of the wire, and posing a safety risk. But copper is the stability of the core
😢😢
Jai physics wallah ❣️❣️❣️
Jai Hind Jai Bharat 🇮🇳🇮🇳🇮🇳
17:24 Because silver is costly than copper and aluminium
copper wire contracts less when heated than aluminium wire. Due to this, it expands less than aluminium wiring does when heated. Wires in an electrical circuit get hotter due to the flow of electricity. Aluminium wiring expands more than copper wiring when heated.
Ductility is also an important characterstice property of matels
GOLD most ductile matel
Sir silver is not used in Electric wire because it is expensive . But instead of these we use copper as electric wires because it is cheaper and it is a good conductor of electricity.
No your ans is totally wrong
@@guriyarani2373 Ok can you tell me the correct answer if my answer is wrong.
I have no words to pay you respect sir............!
Sir because of the aluminum , its wires tend to overheat because of its disposition . When there's continuous contraction and expansion , the wire connections would loosen and cause the wire to creep out under the screws causing circuits to arc .
thanks this helped a lot
Explain difference between white phosphorus and red phosphorus? Please sir
White phophorus catch fire at room temperature but red phophorus doesn't
@@porenesianparrapio5246who asked
Sir your my best teacher...
from the next month i have exams and now i don't have any doubts in chemistry 🧪 i am very 😊 happy 😊
I have a test in a hour
I have test next day
Are u in dav school
@@aluakaba4924 I have a test in( an) hour hoga bro 🤓
@@stumblegamer4462 🤓🤓🤓🤓🤓🤓🤓🤓🤓🤓
Best explanation in the word I am giving all answers correct 😊😊😊 💯