GCSE Chemistry Revision "Corrosion" (Triple)

GCSE workbooks www.amazon.co....
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In this video, we look at corrosion. We explore what is meant by and by rusting and then the conditions needed for rusting. We then explore how we can prevent corrosion.
This video is based on the AQA spec. If you are following a different exam board then you should check your specification. The Amazon link above is an affiliate link. This provides a small commission which helps to support freesciencelessons. The cost remains the same to you. If you prefer not to use this, you can search Amazon for the Freesciencelessons workbooks.
Deliberate Thought by Kevin MacLeod is licensed under a Creative Commons Attribution licence (creativecommon...)
Source: incompetech.com...
Artist: incompetech.com/
Image credits:
Rust on iron gate By The original uploader was Gmihail at Serbian Wikipedia - Transferred from sr.wikipedia to Commons by Micki using CommonsHelper., CC BY-SA 3.0 rs, commons.wikime...
Verdigris on statue "commons.wikime...
By Villy Fink Isaksen (Own work) [CC BY-SA 4.0 (creativecommon...)], via Wikimedia Commons"
Acid rain damaged gargoyle By User:Nino Barbieri - Own work, CC BY 2.5, commons.wikime...
Grease on train buffers By Chris McKenna (Thryduulf), CC BY-SA 4.0, commons.wikime...
Painted railings "commons.wikime...
Graham [CC BY-SA 2.0 (creativecommon...)], via Wikimedia Commons"
Chrome safety razor By Evan-Amos - Own work, Public Domain, commons.wikime...
Aluminium tread "commons.wikime...
By Handi-Treads (Photographing an item sold by only our company) [CC BY 3.0 (creativecommons...)], via Wikimedia Commons"
Galvinised nails By Raysonho @ Open Grid Scheduler / Grid Engine - Own work, CC0, commons.wikime...

[@dannyliles2315]

When your school is closed, so these videos are literally set to us as assignments to teach us the content.

[@cherrieSTN]

Tell me about it 🙄😹

[@benny2071]

I'm passing my mocks and GCSE with this guy.

[@_Guessy]

its been 3years how are ur exams lol

[@rafaelacimatti]

BRITISH GUY I LOVE YOU, YOUR LIL SMILE AT THE END BRIGHTENS UP MY DAY. IM PASSING MY IGCSES BC OF YOU THANK YOU ILY

[@blabz6898]

Only the real ones know this absolute mad man

[@randomclown5288]

Anyone else learning this while the schools are closed lol

[@crystalboy3335]

Me

[@relify2428]

im here 1 hour before my exam

[@merope1136]

me here

[@Conner9692]

When he hits you with the smile😏

[@riyadhul-hoque6851]

Howd u do?

[@MaryWatsons685]

here cuz i didn't listen a word in zoom class for chem ._.

[@izzyplays7976]

Hi Sir, first of all Merry Christmas and a Happy New Year. I hope you had a wonderful time. I was wondering when you will finish the physics paper 2 and biology paper 2 videos. I have been using your videos for AQA Trilogy science revision and I find them very useful. I have made notes on everything except the ones above. I have my mocks in mid Feb and I was really hoping if you could finish them before it as I really want to do well in them. Thanks and I will be waiting for your reply.

[@publicsoup11]

These help so much

[@seshachary5580]

GREAT EDUCATION THANK YOU REGARDS

[@gabriellaaaxo]

LETS GO BOYS

[@fireemperorzuko8756]

Aren't u a girl?😂

[@evieiscool555]

thanks u will get me a grade 8

[@naadiyahsamsudeen4942]

ugh this topic came up in today's paper and i didnt get to finish this vid so im screwed

[@thomasweston4447]

at least it was not a rusty screw

[@danielglass2429]

Sorry to bother you again, but your videos are so great I watch loads of them-what's the difference between galvanising and sacrificial protection; does galvanizing only apply to zinc, and is it a form of sacrificial protection?

[@Freesciencelessons]

Hi. That's covered in the Chemistry 2 playlist "Resources" and the video is "Corrosion".

[@JesseDNME]

Sacrificial protection is a method to prevent the corrosion of iron, also known as rusting. Sacrificial protection is basically attaching a piece of metal that is more reactive that iron to the object made of iron. This more reactive metal, commonly magnesium or zinc, will corrode in the place of iron. That is, the more reactive metal will feed the iron with electrons each time the iron is oxidised to form iron ions, thus reverting it to iron once again instead of letting it become iron hydroxide (rust). Thus, the more reactive metal is sacrificed for the iron. In conclusion Galvanising is sacrificial protection

[@vish_n9684]

@@JesseDNME ty

[@salehahmad606]

those nots are sooooooooooooooo useful for my IG exams thanks alot man

[@merope1136]

Learning while schools is conducting online classes 'cause schools in the Philippines is asynchronous because of the heat index. It's 45° here bruh

[@jollypp4203]

Does galvanising only work for iron?

[@tahamuhammad5454]

so when you mention things that will be mentioned in the GCSE so we don't have to memorize them are you talking about Edexcel or only AQA

[@fireemperorzuko8756]

You definitely have to know it for AQA and most likely for Edexcel too

[@gogopendo1688]

Gather them and washers and nuts and bolts and screws and what ever littlle bit of metal which is galvanised, it has to be galvanised What are we building? you said it yourself a robot

[@NeverBleak]

is tarnish not AQA? Im doing Edexcel

[@umargull3020]

When is the revision booklet coming out

[@samuelstevenson3720]

Let's go for a pint

[@EducatorSharmin]

Steel rusts faster in contact with salty water. The legs of a pier are always under sea water. How do engineers stop the legs from rusting? I watched your video many times but I could not find my answer. Please help me.Thanks!

[@xQryptic]

Use a coating of zinc, aluminium oxide or cover it in grease/paint. I'm pretty sure at least.

[@slideroast5531]

Educator Sharmin in order of something to corrode water and oxygen has to be present. He said it at the start. It won't erode if oxygen is not present. Also if the metal was to rust under water it would be galvanised. You weren't paying attention.

[@aaryanramani1699]

Is galvanising only done with zinc, or can other metals be used?

[@forevermauru1376]

Its only done using zinc, but there are different methods (such as hot-dip galvanizing) to apply zinc to iron or steel

[@adama.1275]

exams in a couple of hours

[@Nomi_MirXa]

Damn

[@s-9159]

1:03 you say that rusting applies to alloys of irons like steel, but a second later you say we must never use the word when talking about alloys of iron. please explain?

[@Freesciencelessons]

No I say never use the word rusting unless talking about iron or alloys of iron.

[@s-9159]

@@Freesciencelessons oh, i misunderstood what you said. i'm sorry, and thanks for replying.

[@tmaki6]

dgs gang wya

[@catx4632]

Any1 here from swhs

[@yusuftopia4391]

lesotho high school

[@alive8268]

anyone else here from school and thinking that the teacher shoutouts random ppl lmao

[@DicksDiyane-di5ot]

How do I get hard copies of your chemistry books?