Master Metals and Non-metals in One Shot | Chemistry - Class 8th | Umang | Physics Wallah
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- Опубліковано 11 січ 2025
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▶️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.
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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.
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#Science #Class8 #Umang
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❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤😂😂🎉😢😢😢😢😢😢🎉🎉🎉🎉
🔴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
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
Who is watching in June and July 2024
Me
Sir concept crystal clear😊
yes bro
Hmmmmm
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
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
17:14
Silver is indeed the best conductor of electricity, but there are several practical reasons why copper is more commonly used for electrical wiring:
1. **Cost**: Silver is significantly more expensive than copper. The cost difference makes copper a much more economical choice for most applications, especially when large quantities of wire are needed.
2. **Availability**: Copper is more abundant than silver, making it more readily available and easier to source in the quantities required for electrical wiring.
3. **Mechanical Properties**: Copper has excellent mechanical properties for wire manufacturing. It is ductile and can be easily drawn into thin wires without breaking. While silver also has good mechanical properties, the cost and availability factors make copper more practical.
4. **Corrosion Resistance**: While silver does tarnish when exposed to air (forming a layer of silver sulfide), copper also forms a protective oxide layer when exposed to air. This oxide layer prevents further corrosion, making copper wires durable in most environments.
5. **Applications**: Silver is often used in specialized applications where its superior conductivity is critical, such as in certain electronic components, high-end audio cables, and connectors. However, for general electrical wiring in buildings, appliances, and other common applications, copper provides a good balance of conductivity, cost, and practicality.
Overall, while silver's superior conductivity is advantageous, the practical considerations of cost, availability, and suitable properties make copper the preferred choice for most electrical wiring needs. 17:15
Brother sir was asking about aluminium not silver and I know that u hv used chatgpt to generate the answer
Brother sir was asking about aluminium not silver and I know that you have used chatgpt to generate the answer
@@farhatzia1592 ooh! my mistake
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
😂😂
Copy paste 😂😂
You way of teaching is awesome.
Thank You Sunil Sir.
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
tu kya itne din se rha tha
Because aluminium is expensive than copper (7:35)
Thk ❤❤❤❤brother
Aluminium is less costly than copper that is why aluminium wires are used as overhead power cables.....I think so
True @@Shakeel_ahmed1
It is less costly compared to copper and it is more ductile than copper also.
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 ❤❤❤
PW is not a company It is a Emotion 🔥🔥
Bro a nahi an hoga
@@studyrestudy engrez ke aulad sorry don't take seriously.
1:04:47 sir barium is missing!!
Huuu
7:32 it is because copper have low melting point
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
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😊
You are right ❤❤❤😊😊😊😊😊😊😊😊😊🎉🎉🎉🎉🎉🎉🎉🎉🎉
Some students like that❤❤❤❤😊😊😊😊😊🎉🎉🎉🎉🎉🎉🎉😂😂😂😂😂😂😂❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤
Apka photo mai mistake hai
17:35 because silver is more expensive and more sensitive to oxidation
1:01:54 Sir apne kya bola tha girl... 😂😂😂
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
☺☺
@@DECODE_WITH_BHARAT nice i am also in class 8th complete 9th syllabus just revising
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
Silver is not used for making electrical wires over copper because it is a very expensive metal.
7:10
Who is watching in july.
Thanks for 5
likes.
25:27(ans-question-2) {phosphorus - solid room temperature , lustrous }
Jai physics wallah ❣️❣️❣️
Jai Hind Jai Bharat 🇮🇳🇮🇳🇮🇳
7:27 Sir Aluminium is lightweight and cheaper than copper. we can also use aluminum in the house but in outer cables, we can use copper but copper will be heavier and expensive than aluminum
Yes
Melting of copper is low as it gets melt in low temperature thats why we do not use copper . Its a scientific explanation , aluminium is cheaper than copper its just a average level answer , by the way i am a neet aspirant and in 12th class so you can trust on me
There are two main reasons why overhead power cables are made of aluminium while copper is used in our homes:
1. Weight:
Aluminium is significantly lighter than copper. This is crucial for overhead power lines because the weight of the cables puts a strain on the towers and support structures. Using lighter aluminium cables reduces this stress and allows for longer spans between towers, making construction and maintenance more cost-effective.
2. Cost:
Aluminium is much cheaper than copper. While copper offers better conductivity for the same size wire, the cost advantage of aluminium outweighs this benefit in long-distance power transmission. Additionally, the larger diameter needed for aluminium to achieve the same conductivity as copper still results in a lighter overall weight.
7:19 7:27
22:31 Answer is D) i and iv
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
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
I have a MATHS UA-cam channel named as "Maths Ki Ghanti". Your way of explanation is the best one. Thanks to share knowledgeable content 😊.
Excellent teaching sir Ji 🎉❤❤
Thank you so much sir ur way of teaching is great 😊👍
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. 😂😂🤣🤣
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
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
Why every good teacher can only be found online, why can't our school teachers teach like this.😐
😮😢
Mazza aaya
Thanks sir for teaching us for free!!
17:24 Because silver is costly than copper and aluminium
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.
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
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.
Any Rohit Sharma fan attended
45❤❤❤
45❤❤❤❤❤❤
❤❤
@@gaurikamishra1764 hi
Yes 👍
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
Very impressive lecture by sunil sir experiment and chemistry I am from neev 2.0 but study 8th class basic chapters
High Respect
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.
16:30 Sir Indium भी alkali metals में आता है क्या?
Yes😂😂😂😂😂
Copper is a good conductor of heat but we use aluminium at transmission lines
The main reason is cost
17:32 the answer is that silver is very expensive though it was not used to make the wires of it
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.
7:28 copper (Cu) has low melting point
i can say physics wala is better thab byju's and toppr ....🤩
Yes
Sir what a entry 😇😇
Aapka introduction style is awesome 👌🏻👌🏻
Sir entry op 🙃🙃
Starting me hi maja aa gaya 😎😎
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
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 ❤️🩹
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.
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
It's not better it's best babe
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 👍
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
He give us very amazing example 😄
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 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
7:19 alluminium wires are not used at home because they catch fire easily
1:01:55 sir girlfriend bol rhe the🤣🤣
😅
Yas
😮
@@Jaskulive1
I understand whole chapter thank you so much sunil sir☺️☺️
Sunil 'OP' Sir 🔥🔥
Sir aap na Q8 1:14:46 ma part D btaya lakin yaha pr C part ha ❤❤
He gives very amazing example 😊😊
1:01:24 pro explanation 😎
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
Right answer of question no.3 is
(B)
36:11
I think we use copper and aluminium wire instead of silver wire(which is best conductor of electricity) because silver wire is more expensive .
Hello juniors I hope you done ✅
The complete chapter in the way of concepts and it will help you in class 10..
🤣🤣
Ok senior
Exactly
I am from class 10th
And i am very worried about this 😢😢😢
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😄
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
Nice
So much respect to you sir 😍
U are the best teacher whom I've found to improve my chemistry😊
Beta answer do thik hai 7:20
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
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..
if you're watching one day before exams then you're legend ultra pro max 😂😂😂😂😂😂
But today is my science exam and I was confused in this chapter, but now my doubts are being clear and I am well prepared for my today's exam.
CORECTION TODAY IS MY BROAD EXAM. GOOD LUCK FOR ME I GUESS
Watching... Before some hours of my exam... Such a unique legends😂
13:41
I don't watching it one day before i see it two hours before exam
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
Best teacher of chemistry
Thanku so much PW for these classes😀😀
Hmmm right
At 1:09:19 sir Iron bhi to hai hydrogen se km reactive
Happy teacher's day sir ❤
Awesome teaching 😇
love you Sir ❣️
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
1:14:58 the correct answer was option c
2:54 class starts
Welcome
Very helpful comment thank u ☺️
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
💯💯 qualified teacher.....and we luck that we are study from chemistry king🥀🥀💯💯🤟🤟
❤
At 17:19
The answer is bcoz the resistivity of copper is less than the copper
Q Why alluminium wires used instead of copper wires overhead?
Ans- Because it reacts with atmosphere and tarnishing happens and forms the layer known as patina. Secondly alluminium is economically cheaper than copper
Correct🥇🥇🥇
These classes are the secret of toppers ...,😏
Yah like me I am also topper in my school
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.
25:24 number (B) Phosphorus solid at room temperature
Option it is
17:21 due to it's expense, silver is not used as wrining.... compared to copper.
Same ma v whe socha tha
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.
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
Who was watching in June
mai bhai
Me too 😂
Me too 😂
Me too😂
mai bhi hacking sikthe sikthe time nikal gya apr mai 6th mai hu no tetion