GCSE Chemistry Revision "Three Reactions of Acids

GCSE workbooks www.amazon.co.uk/Dr-Shaun-Donnelly/e/B084FH9JPF?ref_=dbs_p_pbk_r00_abau_000000&_encoding=UTF8&tag=freesciencele-21&linkCode=ur2&linkId=1fbc0f5c3e7450e895637b56ee343168&camp=1634&creative=6738
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In this video, we look in detail at the reactions of acids with bases, alkalis and metal carbonates. This is one of those topics where it's easy to think you know it but then make a silly mistake on the exam. Remember that details matter so watch the video and get the grade you want.
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.

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[@Freesciencelessons]

I haven't stopped making videos. I've just had a break while I write the revision workbooks. I'll be starting A level videos (and updating some GSCE videos) starting in December 2019.

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the morning before :,D

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Yall Good Luck in all of your science exam's 🥲

[@kashta808]

At the start of the video when you said "you'd be able to predict the products of a neutralization reaction" I though that there was no way I was going to be able to understand or be able to predict the products, but thankfully here I am a couple hours before my chemistry final feeling confident about the test. THANK YOU!!!!

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My Teacher goes around this topic for like a 3 weeks and i dont understand, but you spend 4 minutes and its the first time ive understood this, i think watching your videos will make my grade at least 3 up

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thank you so much for being so charitable with your time and experience, your videos are so helpful! Have a nice day :)

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At least it helped me to revise for my chem exam.Thank you.

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[@sf_0160]

Are displacement reactions redox reactions as well?

[@Freesciencelessons]

Yes the more reactive metal is oxidised and the less reactive metal is reduced.

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[@saadyahmed9718]

Your videos are perfect and easy to learn. Could you also please upload "The test for carbonates using acids", "The test for metal ions in salt using alkalis"

[@Freesciencelessons]

Thanks for the comment. You'll find both those videos in this playlist. You need "Metal Hydroxide Precipitates" and "Testing for non-metal ions" 9-1 GCSE Chemistry Paper 2 Chemical Analysis

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[@Freesciencelessons]

No problem and thanks for the comment. I'm glad that you are finding the videos useful.

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please do live revision for this year papers

[@mustythebeast4920]

Thank you, sir!

[@nimrahkhn3438]

How can acid rain destroy the protective oxide coatings on the surface of metals like almunium and zinc?

[@aymankhan5020]

Do we need to memorize the different metal carbonates, acids and bases

[@Casper-ut2cv]

Super helpful! Thank you!!!

[@Freesciencelessons]

No problem and thanks for the message. I'm glad that you found the video helpful.

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Do you have any idea what the grade boundaries will be for higher combined science (Edexcel)?!

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no

[@Hi-xe8zi]

Hi my test in a few weeks time, can anyone tell me what r the observations when alkali is put into acid

[@ishaahmer4964]

What does it mean when he says iron (III) hydroxide? What does the ‘(III)’ part mean

[@Freesciencelessons]

It means that the iron ion has a charge of 3+.

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Freesciencelessons oh ok thank you

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Thanks for the comment. I'm glad that it helped.

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[@Mishtidoilover]

can you also show equations

[@anonymousog9608]

Also, what would the state symbol of a base be? (s)?

[@Freesciencelessons]

That's correct.

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[@cengiz2645]

Thank you!

[@delacey4864]

One day before GCSE chemistry paper 1 cramming at 1am

[@meganlo9442]

and also another question sorry. so basically do alkalis + acids make salt and water?

[@Freesciencelessons]

That's correct.

[@J27J]

For the last equation at 4:20 wouldn’t there be no reaction as copper is not reactions enough to displace hydrogen from its compound???

[@aneeshsunil4960]

Joshua J this is copper carbonate reacting and not just copper

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bruh that's what i thought

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[@hannahheath2529]

These are such a lifesaver!! One thing...I don't understand how the equations with hydrogen produced instead of water works, could you make a video or explain that? And Also, how do we identify what is an alkali, what is a salt, what is a metal, ect? By the periodic table? Or do we need to know em by heart? Thanks :))

[@fireemperorzuko8756]

That's a lotta questions, but here I go. The reasons with hydrogen produced instead of water is because it's an acid + metal, and there's no oxygen bonded to the metal to make water (H2O). An alkali is a soluble base which neutralises an acid, that's how we know it, a salt is a metal and acid, a metal is in the left side, middle and part of the right side of the periodic table and yes we do use the periodic table to determine most of these but we can also deduce them.

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Brilliant video . Very helpful ,thnxx

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Who else is cramming the morning of the chemistry exam?

[@nekoj5417]

Thank you

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Sorry I'm confused, how are these videos different to your previous unit 3 chemistry videos?

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New specifications?

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what did you get

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Thank you so much

[@Hannahlolz]

How do you know whether something is a metal carbonate or not??

[@aamirxahur5028]

check properties

[@worldfoods6432]

It has to have CO3

[@coasterconcept8832]

at 4:11 how does copper displace hydrogen in hydrichloric acid, is it because its copper carbonate. If so how does this make a difference?

[@Freesciencelessons]

The copper is not displacing the hydrogen. The copper is already the Cu2+ ion so this is simply a chemical reaction rather than a displacement.

[@literally-just-a-leaf]

Good luck to everyone else sitting paper 1 tomorrow!

[@rosee67]

Praying I pass🙏

[@meganlo9442]

you know sulphuric acid. When do we know to use "sulphate" or "sulphide" at the end of the salt

[@Freesciencelessons]

Sulfuric acid always makes "sulfate" never sulfide.

[@yousername01]

At 4:20, why does copper displace hydrogen from HCl? Hydrogen is more reactive than copper on the reactivity series.

[@Freesciencelessons]

It's not a displacement reaction, it's a neutralisation reaction. The copper is an ion in the copper oxide and an ion in the copper sulfate.

[@yousername01]

@@Freesciencelessons Thank you for clarifying

[@akkoei8822]

Chem paper one tomorrow, hoping for a 7 at least wish me luck

[@ellie.8837]

why is there 2HCl in the first example with copper but only 1 HCl in the second example with the sodium hydroxide??

[@rubiksworld2170]

I know this is really late, but in the first example he just balanced the equation. This is so that there is an equal amount of each molecule on both sides. For example, on the left there are two H (hydrogens) - because of the 2 he added in front of HCl, and on the right there are two as well.

[@raziasultana1823]

At 1:36 copper isn’t more reactive than hydrogen so how was copper chloride formed

[@Freesciencelessons]

Because in this reaction, it's copper oxide reacting not copper the metal.

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[@mgcpr0z372]

dead college

[@anonymousog9608]

At 0.48 what does the (III) next to iron mean?

[@Freesciencelessons]

It means that the iron is the 2+ ion.

[@anonymousog9608]

Freesciencelessons Thank you!

[@acr7780]

doesn't the positive ion in a salt come from the acid? They form H+, whilst alkalis form OH-. Btw I love your videos

[@Freesciencelessons]

No the positive ion in salts comes from the base, alkali or metal carbonate. The negative ion comes from the acid.

[@moriumhossain7826]

No, as for example, the salt in hydrochloric acid and copper oxide = copper chloride, doesn't come from the hydrogen and oxygen, which are + and - ions but from the chlorine and copper which are - and + ions. Therefore, the negative ion comes from the acid and the positive ion comes from the alkali.

[@XYZ-uh6ox]

doesn't the positive ion in a salt come from the acid?

[@jasminekarisson879]

In acid-base chemistry, a salt is defined as the ionic compound that results from a neutralization reaction between an acid and a base. As such, salts are composed of cations (positively charged ions) and anions (negative ions), and in their unsolved, solid forms, they are electrically neutral.

[@Name7.62]

@@jasminekarisson879 I'm sorry could you simplify that?

[@user-ve3qx2di4d]

@@Name7.62 salt is neutral cause it has both positive and negative ions g

[@leleelvis7979]

Exactly what I'm thinking! If acids have H+ ions why does the salt contain negative ions from the acids!?!

[@patron7520]

​@@leleelvis7979 its because the H+ ions dont make the salt.

[@blinkburrito7101]

ok.. but whats the difference between a base and an alkali

[@fireemperorzuko8756]

An alkali is a soluble base

[@yousafkhan525]

wow soo good

[@mayaa5678]

do bases dissolve in water

[@alonaspeciulis8666]

no as bases dont dissolve in water however an alkali does dissolve in water

[@anonymousog9608]

Ray about this, but I'm also confused as to why salts contain a positive ion that comes from the base, and a negative ion for the acid. Can you please explain?

[@anonymousog9608]

Sorry*

[@z.s8828]

The positive ion which comes from the base/alkali is the METAL in the base (as metals have a positive charge) and the negative ion from the acid is the NON-METAL in the acid (as non-metals have a negative charge). Therefore, the positive and the negative ions (metal and non-metal) bond together through ionic bonding to form the salt (which is an ionic compound).

[@cruxvii7416]

@@z.s8828 good concepts!

[@tomshawuk]

@@z.s8828 Thank you so much, this really helped.

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amazing

[@kasturisawant3701]

1:28 How is Cu displacing H from its solution, because Cu is below Hydrogen in the reactivity series

[@user-il5qj8cu1p]

can copper displace hydrogen?

[@Freesciencelessons]

No, copper cannot displace hydrogen. However, acids will react with compounds such as copper oxide but that is not a displacement reaction.

[@ebunoluwataiwo9975]

How come Iron 3 hydroxide a base? I thought all hydroxides are alkalines?

[@zubiasoofi7237]

Awesomness13 all SOLUBLE hydroxides are alkalis

[@aamirxahur5028]

it is not soluble in water thats why you thought wrong✌

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Not me watching this the morning of a test It’s not even a proper test why am I stressing about it

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I feel like everyone here is the day before the exam

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I will tell my kids this was Charles Darwin.

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sir plz can you make videos on (GENETICS) topic I really need help in that plz cie's are near plz sir!!

[@Freesciencelessons]

Hi. You need this playlist: AQA Biology Unit 2 Topic 5 Genetics I should point out that my videos are not written for CIE so you'll need to double check the topics. I may not cover everything you need.

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I've already replied to this. There's a whole topic on genetics.

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[@bobsmith-fq3qr]

are we told wether a soloution is an acid or alkali in the exam? if not, how do we determine that

[@Freesciencelessons]

Acids are named with the word acid in the name eg nitric acid. If you are not told the name of the acid, remember that acids have a pH less than 7.

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Chemistry in 18 minutes

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