Chemical Effects of Electric Current Class 8 Science (Physics) in One Shot | BYJU'S - Class 8

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Hey Students! In this episode of the BYJU’S Champions series, we will be discussing all the important concepts in your Class 8 Science Chapter 14, Chemical Effects of Electric Current.
Summary of the chapter:
Metals such as copper and aluminum are good conductors of electricity, whereas rubber and plastics are poor conductors. In the case of liquids, some are good conductors of electricity while others are poor conductors. Water from sources such as pumps, wells, ponds, and taps is not pure and contains dissolved salts. This type of water is an excellent conductor of electricity. While distilled water is free of salt and is a poor electrical conductor.
Topics covered in this session-
- Chemical effects of electric current
- Current Test - Conductors
- Insulators (Bad Conductors)
- Electric circuit
- Current - Conducting Liquids
- Conduction of Electricity in the Water
- Acids, Bases, and Salts
- Electrodes and Electrolyte
- Electroplating
- Applications of Electroplating
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00:00 Chemical Effects of Electric Current
7:06 Keep Electrical Devices away from Sources of Water
9:32 What are Conductors?
10:29 Insulator is?
15:41 Question based on set up of give electricity
18:09 Tester - Other Types of testing elements
29:03 Keep Electrical Devices away from Sources of Water
32:35 Electrolysis Definition
35:13 Q.Do all liquids conduct electricity?
42:14 Ions in Solution
44:38 Q.Do all Liquids conduct electricity to the same extent?
46:39 Q.Riya has to pick few solutions for glowing the LED, which of the following Solutions cannot be chosen?
51:12 Chemical Effects of Electric Current
53:15 Q.Why are bubbles forming in water?
57:49 Electroplating
59:11 Application of Electroplating
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Supreme legends watching it a year later😂😂😂😂😂

[@Ragini4810]

Thank you so much sir 😊 All my doubts are clear now ✨

[@toxin__]

Nah, legends are people who watch the video 8hrs right before exam

[@maryamkhan5101]

Right😂

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I am a legend

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Uffff 9hrs before exam

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and ultra legend are those who watch the vid 2 months before exam😶‍🌫😉

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No super ultra legends go through it on the day of exams...just 40 mins before

[@nireekshakamath1635]

Everyone in the comments- Legends watching this 1 day before exam ME who is watching before school even started

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Ultra legends watching this video just the night before the science exam

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Double ultra legends watching before 5days

[@cryblox_]

Amazing session ❤ i learn new and interesting things and thx sir you are great❤

[@malothshruthi_17]

Your explaining in a very easy method thank you sirr

[@siyasiya9378]

Sir when we add HCL in water it dissociates into h+ and CL - why only CL gain electron not H gain electron

[@sadhanajha5697]

Because cl have a tendency to attract electrons in a molecule ( electronegative) That' why cl gain electron..

[@TEJASXGAMING976]

Sir I have a query that Current can flow in salt water so if we put the wire (which come in our home ) So if we put the wire In the sea so the current will flow or not like I went to goa and I put the wire in the sea so in the whole sea the current will flow? sir plz solve my query.

[@dharmaprasad9871]

Normal sea food water is not purified it contains few amount of Nacl that's why current easily passes through it

[@LoveYourself-ec9fh]

The current will flow. It is because sea water have salt in it. And thus, it is possible for the current to be flowed in it.

[@jagratimehta8725]

It's a immersion rod for heating liquids

[@mamatajena8178]

15:33 sir a matter is conist of atoms a atom has a nucleus the neucleus contain electron,,proton and neutron Electron -(-) Proton-(+) Neutron 0 or neutral

[@Cosmic._.sachin024]

So , what's wrong in this

[@drishtisharma2345]

This Video helped me a lot for my last minute studies hats off to Saurabh Sir

[@Bremewasfound]

In 1hr u covered last min studies. Ok👍🏻

[@komicmania]

😂​@@Bremewasfound

[@ishikaenterprises2234]

Thank you so much for the session sir

[@star.rubi2468]

Thanks sir for a amazing session

[@supriyasha6154]

Sir you make this chapter was easy and wonderful 😊

[@Aarushiii63829]

Thank you sir for explaining the chapter in easy and simple way 😊

[@prakritisolanki4210]

Thank you so much Sir But I was having a doubt regarding electroplating- As tin is electroplated on iron to make cans for containg food because iron could react with the moisture and food. But why cant we use tin for making cans directly???

[@nithyadharmala9493]

we do have tin cans.....

[@atypicalheyaa]

Tin is actually used directly for making cans! When we talk about tin cans, they're often actually made primarily of steel (which is an alloy of iron and carbon) and are coated with a thin layer of tin through a process called electroplating. The reason for this is that tin alone isn't as strong or durable as steel. By electroplating steel with a layer of tin, you get the best of both worlds: the strength of steel and the corrosion-resistant properties of tin. If you were to use pure tin for making cans without a steel base, the cans might not be as sturdy or capable of holding the contents securely. They could be easily dented or deformed, potentially risking contamination of the food inside. So, the combination of steel's strength with a protective layer of tin helps ensure the cans are durable, protective against corrosion, and suitable for storing food for extended periods without any risk of interaction between the container and its contents.

[@gouridevi5636]

Tin is also used to make cans but here the point is about iron cans which can't be use directly to store food because iron is highly reactive so it is electroplated by tin😊😊😊😊

[@keralablastesfc4076]

THANKS SIR Best session I have watched ever..!! 😍🤩

[@user-bq4ft2yu3v]

Legendary people watching this video before one day of exam 😊

[@craftwithdiya383]

What is the difference between electrons and ions?

[@KITTYPCOFFICIAL]

Electrones are negetiveky charged where ions are charged atoms

[@ffpro7904]

Only ronaldo

[@mominwrites013]

Lovly sir but i have one doubt that you told in this video, neutron has no charge. But i have studied that neutron has some charge. And neutral means that there is equal charge of neg. And postve

[@entity303gamerz6]

Neutrons have neutral charge they only carry weight inside the atom whereas electrons protons have charges and doesn,doesn't, carry much weight

[@shubhangibhande2367]

Bro the same I had studied

[@sharvijaiswal675]

sir how would we get to know whether a substance added to the solution will make water conductive or not? means how would we know that in which ions it will dissociate and whether the ions are suitable or not? and also how is organic compound related to conductivity

[@satishchandra3128]

U can test for ions I guess

[@atypicalheyaa]

Determining whether a substance will make water conductive involves understanding its ability to dissociate into ions when dissolved in water. Here are some considerations: Ionic Compounds: Substances that readily dissociate into ions when dissolved in water tend to increase its conductivity. For instance, salts like sodium chloride (NaCl) dissociate into sodium (Na+) and chloride (Cl-) ions, which can conduct electricity in water. You can predict this behavior based on the compound's chemical formula and its known properties as an ionic substance. Ionization: Some molecular compounds can ionize in water, producing ions and enhancing conductivity. Strong acids (like hydrochloric acid, HCl) and strong bases (like sodium hydroxide, NaOH) dissociate almost completely into ions in water, significantly increasing conductivity. Ion Strength: The strength of the ions produced is also crucial. Highly charged ions or ions with greater mobility tend to enhance conductivity more effectively. Organic Compounds: Most organic compounds, such as sugars, alcohols, and oils, are non-ionic and typically do not increase water conductivity significantly. These substances do not dissociate into ions when dissolved in water. However, there are exceptions. Some organic compounds, especially certain acids, bases, or salts derived from organic molecules, can enhance water conductivity if they ionize significantly when dissolved. For instance, certain organic acids (like acetic acid, found in vinegar) or organic salts (like sodium acetate) can partially dissociate into ions, contributing to increased conductivity.

[@user-nm4ew5yc1t]

Sir ,water is bad conducter of electricity then how wet cloth can pass electric current

[@nitinnarang4609]

Water is good conductor

[@mansisuyal5066]

25:40 25:40 25:41 EPNS = Electroplated Nitrate Silver

[@aanyagupta8797]

Sir how to find out which is organic compounds

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Very nice teacher please also teach icse because I'm studying in a icse school but I love your teaching team so I'm learning this all......

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Best session I have watched ever..!! Love it..❤️❤️

[@santoshkumar-ys4yb]

Sir what is electrolytes

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Ghanta bhai kuch samaja ne iya ghanja ka

[@LAKSHAYGAMER682]

😂

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Very nice session Really helpful 😊😊

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Tap water is impure 💦 water 🌊

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Super legends watching On exam day Morning 5:36am😎😎😏😏

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Byjus is a really helpful app or channel. Thank you to Byjus team for teaching us everything.. It is really helpful

[@JSshanthy]

Fabulous session

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Sir your class is amazing

[@artloverdevansh]

Sir Na and cl is posinus but nacl is not why sir?

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Legends like me watching this at 2 o clock in night and tomorrow is exam not study before

[@tejallahoti854]

Amazing session

[@entertainmen668]

Thanku sir ❤❤❤

[@akshika6980]

Sir .... all bases conduct electricity ? And all acids doesn't.....?.......is it true...??

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Legends watching 1 day before Final Science Exam 🤡

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Watching it 1 day before exam really healpfull

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Lecture was outstanding

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Legend's are watching 1 day before

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Legends=Ultra pro Max will watch this 16 hours before 😎😎

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No legends watch the video before one day of half yearly exams

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Class starts from 9:32

[@amolpreetsidhu2290]

Thnksss forrr tellingg 💗

[@Sezhian496]

What is current

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Amazing sir 👏😍

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I absolutely loved this session it helped me a lot ❤❤

[@acidanims8006]

is distilled water a bad conductor or a insulator like does electricity still pass through?can it be used as a electrolyte?

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Poor conductor

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Me watching after 155k

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Me watching after 250k

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Awesome session❤❤🥰🤩😎 19:48

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Sir when will you have a live class for class 8 science

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Charge

[@user-cb1xm3sv3m]

Is our body conduct electrical current

[@rakeshkumari6201]

Sir carbon is bad conductor so why we use carbon rod during plating

[@bhardwajshriyal5111]

All the best for tomorrow physics exam

[@user-vj6kb5bg4t]

Sir good evening Sir once my science teacher said that there is no insulator The thing those are known as insulator can conduct electricity in rare cases. It's true or false

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Amazing sir 👏

[@byjus-class-678]

Thanks a lot Anu🤩 keep watching!!

[@Lakshya_6969]

Sir if air is insulator of conductor. If it is a insulator so how the lightening passes through air

[@user-gk5fx6ec4s]

when the differences in charges becomes too great, this insulating capacity of the air breaks down and there is a rapid discharge of electricity

[@SandeepKumar-os1bq]

Nice session sir We all have cleared our doubts Thank you sir

[@user-yn1se7dv6b]

doubt, if the key is electro plated the size of key will increase and and it will not fit in the lock

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thanks Mr. Temba Bavuma sir .

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😂😂

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Supreme legends watching it 4 day before exam 😂😂😂😂

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Amazing sir

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This session is interesting

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Legends are watc 3hrs before exam😂😅😅

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Depended on which water is there.

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YES SIR

[@manojKumar-jl5ug]

Amazing sir🥰🥰

[@byjus-class-678]

Thank you! Cheers!

[@harika4389]

Is our saliva is good conducter of Electricity

[@meerarhaan7576]

Pro legends watching this lecture before 1 day of exam

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mirceury is good condouter of electricity

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yes sir we can make circuit diagram...

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what is tester

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Humans watch it before the teacher even started it 😊😊

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Me be like 😂

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Fabulous session! 😍👌

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Hey Nupur, Glad you enjoyed it!🤩 keep watching!!

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Noo

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We add salt in oil , will it become conductive?

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best teacher and most importent part is 1:1:10

[@SMITEX-XD]

Thank u so much :)

[@lakshmideva5130]

Good condutor sir

[@rudranshgoel9978]

I had a doubt why do we call the immersed nails in the part of electrolysis as electrodes ? 34:32

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guguhuyhnyn

[@unnatigangwar9009]

Because electrodes are immersed in the electrolytic solution in a cell. it is not so hard

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@@unnatigangwar9009 I got it cleared by the way thnx

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Thank u so much sir you explain me this ch so clearly thank u sir ❤

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Sir what is the meaning of poor conductor

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Good night sir hello🎉🔥🔥😭😭😭😎😀😀😀😎😭❤️❤️🔥🎉🎉🎉🎉🎉😭😎❤️❤️❤️❤️

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Nice xplaination

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Watching this because I have science exam on Monday!!

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Which school?

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Thengs sir 🎉🎉😊

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Sir what is ions ???

[@somyashefalika]

IN science class 8 chapter 0:03 / 1:09:39 • Chemical Effects of Electric Current Subscribe Share Download Reply

[@lakshmideva5130]

Sir please explain 14.3 activity

[@dharmaprasad9871]

Aqueous solution of water is good conductor and distilled water is a bad conductor of electricity

[@ShampatlalChauhan]

Very nice ❤❤❤❤

[@sidhumoose788]

Very nice sir

[@akshika6980]

And sir why are we using electricity in electroplating........

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Sir what is meant by anode and cathode?

[@toxicalpha9470]

annode is the positive electrode and cathode is negitive

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Some legendary watch video 1 day before the exam 😎