GCSE Chemistry Revision "Required Practical 4: Temperature Changes"

[@benjackson7541]

There is a special place in heaven for this man

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yes

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Maybe God is saving FreeScienceGuy a seat beside him

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@@jamie_sg freesciencelessons*

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he is a beauty

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@@t___939 🤓

[@tomdw5547]

Test tomorrow, good luck.

[@spitfire1425]

Good luck to you too.

[@friedegg6368]

g'luck !! we'll do amazing cos of these videos lol

[@isobellaux9177]

You too

[@JackJack-fy1cn]

good luck

[@MantaRayNoir]

Fail time!

[@quantumgroovytime]

I swear this comment section is so wholesome. And to anyone taking exams, good luck!! Hope you do well

[@xfreja]

tbh i just hope next year’s exams are either easier or just cancelled altogether

[@Beast-lf3mw]

@@xfreja year 10? I am. I’ve got all my mocks lol this week so I’m bashing out his vids

[@plateoffrogs4709]

nice pfp

[@amy_rei4277]

*Remember guys*: ENdothermic - ENter (energy is transferred from surroundings to reacting substances) EXothermic - EXit (energy is released by reacting substances into the surroundings) *Also another one is*: Bendo (B for bonds being broken, endo for endothermic) Mexo (M for bonds being made, exo for exothermic)

[@tikifi1234]

NAHH BENDO AND MEXO THAT’S GENIUS IVE BEEN STRUGGLING TO REMEMBER THAT THE WHOLE TIME!!!

[@amy_rei4277]

@@tikifi1234 glad to help! 😁

[@mph3923]

THATS SO SMART YOU GENIUS I LOVE THIS IVE BEEN STRUGGLING ASWELL TYSM

[@Tauheed_R]

Genius

[@AP_6]

My guy

[@meganjaneplatford8998]

THIS CAME UP AS A SIX MARKER- THANK YOU ANGEL!!!!!!!

[@Hannah-rs5oi]

For those taking AQA Chemistry in 2022 this is one of the core practicals that questions will be asked about along with the crystallisation of insoluble salts and titrations. Good luck everybody!

[@yorambo2857]

for higher?

[@multipliersupreme213]

Only titrations if you are doing triple of course.

[@georgeeastburn8920]

Good luck today test in about 2 hours

[@rohitadyanthaya7600]

it's todayyy

[@ahmadiahmadi00]

@@rohitadyanthaya7600 what did u get?

[@abed4193]

i have a full paper 1 chem exam tomorrow, end of year mocks before we enter y11. i watched all his chem videos, and compared to my CGP revision guides, he is precise and concise. i'm really nervous for my exam, and hoping this man has helped. *fingers crossed*

[@Freesciencelessons]

Good luck. I hope that you get the grade that you want.

[@aceves_]

Did you end up getting a good grade?

[@generalpatton1232]

We really need answers

[@5staryzzz]

How did your exam go?

[@sandyvioletchowdhury]

yo, update ;D?

[@OrviC]

Haven't had a chemistry teacher for the whole half-term, my test's tomorrow and I'm trying to learn everything now

[@zachfaulkner79]

Love the new suit fam 🔥🔥🔥

[@fizztazz]

This is one of the listed practicals for my gcse this year, thank you for making these accessible to everyone :)

[@Deararkk]

Cheers 👍🏼

[@hayam1956]

just finished binge-watching the entire 2022 playlist triple paper 1 ready for tomorrow 😭#gcse2022

[@revizionz8730]

cmon me too g

[@interimterminal]

literally me rn

[@emmybowyer8728]

Literally same

[@jonny6421]

same bro

[@michaelavangeffen7506]

same. best of luck today!!!

[@katywilliams8701]

you saved my life today in biology I can't thank you enough your a true hero and living legend!!!

[@asal9654]

Honestly

[@goob8945]

this is chemistry, wrong turn

[@eagleflies9515]

Which paper did you do?

[@annabeable-stroud509]

Watch at 1.5x speed to get through everything for tomorrow’s exam :)

[@paul2514]

2x speed is a whole new experience

[@plateoffrogs4709]

it is quite literally only 5 minutes long

[@xfreja]

Kovaakdjokovic yuppp i watch literally every single yt video on 2x speed lmao

[@IsmaeelRashid-q2y]

@@xfreja even videos u enjoy watching?

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Protect this man at all costs

[@LeonTheProf3ssional]

Good luck in your chemistry exam 🙏🙏🙏👍👍👍👍

[@M0A21Z-OFFICIAL]

thanks bro

[@goob8945]

thanks my g

[@anarghirosdumitrache7362]

papa bless all our souls 🙏🙏🙏 🙏🙏🙏 🙏🙏🙏 🙏🙏🙏

[@BBBONES-zh2wg]

you too

[@essigrace]

🙌🙌

[@RockiesRiot]

Rah, this man is actually gonna make me pass science

[@LewBurn]

I’m so glad this exists

[@user-on5vn6hd5k]

gcses in a week crazy

[@Zxrlorn]

I want to thank you, you're the reason why I've been getting really high grades for science since the start of year 11 and now I'm doing my 1st chem test tomorrow.

[@aquaticstarr4607]

The end… good luck everyone on the chemistry paper tomorrow!! And massive thank you to you freesciencelessons for helping us all for all these years :’)

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i want this man to teach every subject

[@full-timetbzpopper2764]

A LIFE SAVER THANK YOU SO MUCH

[@sanjivinsmoker3698]

Got a test tomorrow this has been truly helpful hope you continue in the future thank you!!

[@henrys8178]

Can you do a playlist with all the required practicals in? Thank you!

[@pandafish392]

He has

[@hecticentertainment]

I am now in Yr 11. It is October, and I have started revising. I am predicted 999 in the triple sciences. Thank you FREE SCIENCE LESSONS!

[@ellinexxros655]

This man is a saint and saved me in my GCSEs

[@cansu5108]

U have no idea how much u help me with your videos your say it clearly and make it easy to understand keep up the good work

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This guy is definitely going to heaven!! i dont even know why i wasted my time on our science teachers

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Michael Nyamaka this guy taught me more i 1 hour than my science teacher did in 5 years

[@ambercallaghan4192]

Every single video that this guy does has the nicest comment section I've ever seen. His ego must be so high lmao. Also good luck to people doing exams in 2024!!!

[@alexstone9099]

You are doing Gods work keep it up

[@hk_03]

there is 10 hours till the exams and I'm cramming like I always am good luck guys

[@astereyee]

You're actually amazing

[@codmob9818]

FINISHED THE PLAYLIST AND I JUS DID A PAST PAPER AND I FEEL RLLY GOOD, ALL BC OF U :) I DONT THINK YOU UNDERSTAND HOW MUCH OF A GIFT YOU ARE TO ME

[@AwesomeCreeves]

Good luck all for the exam tomorrow. You'll all do great!

[@awaqaaqawa9802]

I found the exam quite easy as electrolysis, temp changes and titration came up on the triple higher paper.

[@CarHorn3]

Chemistry Paper 1 is today, and I've never been good at Chemistry (or science, for that matter), so wish me luck! I wish all GCSE students of 2022 the best of luck, this one's tough! 💖

[@MF-wg5xy]

It came upp on the exam(combined higher)thanks for giving me free 5-6 marks❤️

[@undisclosedscientist2142]

Revising this just before my exam, wish me luck lads, I’ll tell you guys what I got

[@anssa6163]

what did u get?

[@mhmm5379]

what did u get

[@chriscaygill6331]

what did u get?

[@pheobemakintosh4986]

Ahhhh watching these video are SO HELPFUL YES

[@otherthings02]

imagine actually getting sleep the night before an exam lmao

[@jessbrownley1855]

Your videos saved me at gcse!! Are you going to do alevel videos? Thank youuu

[@siamsama2983]

Jess Brownley he probably will, after he is done with GCSEs. Maybe the IB too...

[@maddien9]

I have a question- in the advanced information for this years GCSE's, it says I have to know how to investigate temperature change in metal + acid reactions, carbonate + acids reactions, and displacement of metal reactions. Would I use this same method for all of these reeactions to measure temperature change? :)

[@phiebondie]

yes, it is the same for each

[@YousefHashim1]

Chem exam in just under 2 hours. This man is saving my life.

[@soyaltomy1019]

can you use sodium carbonate instead if the solution.

[@axcelhehe1105]

The paper’s on Monday. Aiming for a 8 😄 Got a 5 in the mock Pray for me

[@ellenweston3932]

If it releases energy, how come the temperature increases? Sorry if it's a stupid question aha

[@JamesHoyle.]

The temperature of the surroundings increases. It is the surrounding temperature we ars measuring, not the internal reaction’s, but no i wouldnt say thats a stupid question.

[@emilliepatching9061]

Also because its an exothermic reaction

[@mylessmithrobinson6169]

The energy released is thermal energy

[@JG-qo1os]

I had the same problem but this is your answer: the reaction occurs between the particles and energy is released from that. As exothermic reactions release energy then the particles release energy to the liquid/solution they are in. Meaning the solution we measure the temperature of will increase

[@JG-qo1os]

Well I guess its too late.

[@timmy8558]

gcse basically today i just wanna say thank you

[@bestbuilder7833]

Best Revision Helper. Ever.

[@Shxynev]

wait so is there an actual reason for the lid as well or is it the same as the reason for the polystyrene cup? Thanks!

[@Freesciencelessons]

It simply reduces thermal energy transfers (just like the polystyrene cup).

[@Shxynev]

@@Freesciencelessons thanks!

[@dma7704]

it reduces heat loss to surroundings; basically you want to make sure that as little heat escapes from the system as possible

[@eruusky]

Should I revise actual Chemistry or farming?

[@zaarakhan6507]

hey, i was predicted a 7 and got a 9 in chemistry & biology all because of you. thankyou so so much for all your hard work. keep doing what you do:)

[@rachel_murphy06]

got chemistry Paper 1 tomorrow and these videos are so helpful THANK YOU!!!!

[@myb278]

Probably the last freesciencelesson vid i will see for chem paper 1

[@zaynicorn]

Dear Shaun I was hoping for each practical you could include a risk assessment because in my school in Dubai we get frequently asked for a risk assessment on most of these practicals. I know as a science teacher you may believe that you just need common sense to write a risk assessment but common sense is not that common. Thank you.

[@fireemperorzuko8756]

The target audience is AQA GCSE students, yes all students will learn from this but Dr Donnelly can't change what he's teaching for every student from every different part of the world.

[@IsmaeelRashid-q2y]

due no running in lab no drinking acids wear goggles bruh -

[@imbyp0]

I love your videos freesciencelessons

[@mattbrown2728]

This guy is my new religion

[@viralfooty4844]

This guy is too sick he saved my life i just went on his video 30 minutes before the exam did the inverse law and it came up in the exam

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Love how there's Mr Beast honey ad before his vid. 2 men of class, Mr Beast and FreeScienceLessons

[@kez992]

good luck lads lets get these grade 9s in the bag

[@yoku-tv]

Who's here for 2023 exams

[@samuelshan6]

so glorious, may God bless you brother

[@sia1036]

thank you so much i have a chemistry test tomorrow 🧡

[@mrqwerty4792]

WE GONA ACE THE EXAM TOMORROW AREN'T WE GUYS?! be confident and you'll pass with flying colours, trust me... lemme know how you did :)

[@adognamedsight]

I passed

[@h44nnah]

finished the playlist ready for tomoz xx

[@morayooyedipe8004]

Test tomorrow. Good luck to anyone who sees this

[@soobhn]

binge watching his whole playlist for tomorrow

[@katewilkinson3640]

I don't understand how the solution's temperature increases when it is exothermic, surely it should decrease because energy is being lost? Could someone please explain?

[@Freesciencelessons]

In exothermic reactions, energy is being transferred (you can't lose energy) from the reacting chemicals to the surroundings. In this case, the surroundings is the water molecules that the reacting chemicals are dissolved in (ie the solution). So, the temperature of the solution increases.

[@techyesblade2506]

Ye I was confused also, but as always freesciencelessons comes in clutch

[@katewilkinson3640]

@@Freesciencelessons thank you!!

[@GamerGirll36]

How do we know the thermometer is just measuring the temperature of the water molecules (the surroundings) though? Doesn’t it measure the temperature of the solution which is a mixture of the system ( the acid and base) and the surroundings ( the water)?

[@Freesciencelessons]

In a beaker, the vast majority of the molecules present will be water molecules. The reactants and products only represent a small fraction of the total. So the thermometer reading will reflect the energy of the surroundings (ie the water molecules).

[@sp00derman7]

Finished the playlist 15 min before the exam cyamon

[@isabelmuchwa8638]

Class of 2020 we you at⭐️

[@jamiejenningsgames3784]

that's not a thing mate

[@lordbyronthe2nd282]

sick video, my mate C hippie told me about it

[@Raj-187-c]

just got through the whole playlist a day before my exam😭😭

[@adamecho0236]

Great video helps a lot

[@jneal21]

What are the dependent independent and controlled variables

[@andreiarg]

We like watch this in class.

[@nickhooigray]

God bless this man

[@EducatorSharmin]

Is it your practical class? If you showing something practical then more understand. Anyway...its always great for me.

[@Charles-fi7ww]

Sorry, ik this is late to ask but i've replayed the video but i still dont understand why the temperature actually decreases, the energy released is spread out and greater, meaning there should be a higher temperature surely??

[@Freesciencelessons]

Once you reach a certain point, the energy released by the reaction is the same. However, after this point, this energy is now spread out in a greater volume of solution, so the average energy of the particles is less. This makes the temperature less (temperature is the average energy of the particles).

[@Charles-fi7ww]

Ohh, I forgot the volume was increasing too. I really appreciate your quick response on a Sunday, thanks a lot your videos have really improved my confidence for science in general.

[@pongmehraissangwingsang]

How can we then calculate the bond energy term given the standard enthalpy of atomization ??😢

[@srch-10]

day before mocksss

[@thekidofgaming]

I got sent this at the end of my remote lesson

[@someone...000]

Hi sir, ty for the video, really appreciate this. One question, so if this was an endothermic reaction, and we were to draw that temperature graph, would it be the graph for the exothermic reaction but upside down. If so that i understand why the temperature would decrease at first, but could u explain why temperature would increase again as the reactant is added in excess?

[@NeillyWheelie]

I'm a little lost: in class we did this practical but we did a displacement reaction instead of a neutralisation - does anyone know why/did the same?? Thanks :-)

[@Freesciencelessons]

You're allowed to do any reaction where there is an energy change so a displacement reaction is also fine.

[@LWYRUP05]

Can’t remember already

[@Kimsoohyun88]

Good luck to anyone watching this on your day of exam and good luck to everyone one

[@LaibaLatif-u8h]

my exams tomorrow😭

[@harrison88352]

chemistry paper 1 test tomorrow!! hoping that I do good! thank you sir!

[@boogiepop8063]

All I can say now is good luck to all for tomorrow

[@anonymousyouth7479]

Sir, I see you began adding in each variable but the older videos you haven't included them in. Could you maybe add them in the description box?

[@JamesHoyle.]

For other required practicals, e.g. electrolysis and making soluble salts, there aren’t really any variables as we only do the experiment once, not comparing results.

[@Ikiguyy]

Could you say that the reason for the decrease in temperature is due to the excess is absorbing the thermal energy released when the bonds are broke, so this decrease the energy of the surroundings?

[@sy_mbiotic]

I don't understand. If an exothermic reaction gives off energy to the surroundings, surely the solution itself would lose energy and therefore you would measure a temperature decrease, not an increase?

[@Freesciencelessons]

The molecules lose energy and this is transferred to the solution, which increases in temperature.

[@sy_mbiotic]

Freesciencelessons thank you so much!!

[@cryptomagicien6907]

What do you mean by rinse out at 2:17

[@theclutchhawk1034]

GWK FOOT use water to flush out the solution

[@najmallayl]

How would you tweak this experiment in order to test the effect of acid concentration or acid volume on sodium hydroxide?

[@Eugene141]

after 4 hours the day before. completed every chemistry 2022 paper 1 vid

[@shade694]

Sir, will the steps be in the chemistry paper?

[@hannahgrapes]

good luck to anyone taking their chemistry exam today!

[@alissa-d9m]

GUYSSSSS GOOD LUCK FOR THE CHEMISTRY EXAM TMRV WE WILL ALL DO GREAT!!!

[@A7TGzed]

Hi i had a question i found a lot of past papers talk about decomposition of hydrogen and thermal decomposition what are these i haven’t find a video about it

[@jonny6421]

don't think you need to know that mate it is not on the advance notice so don't worry.

[@Celeste_51]

Do I need to know about the Haber process for the gcse chemistry paper 1 exam? And the linking percentage shield and shift in equilibrium. (Sorry for asking more questions)

[@imychallinor9200]

What does it mean by 10 cm cubed SO CONFUSED

[@dann7598]

It’s the unit for measuring a solution I think

[@imychallinor9200]

1 omg thank you so much lol

[@fireemperorzuko8756]

It's the unit or volume, we use it when measuring how much something contains, so it's used for solids, liquids and gases but in this video just for liquids

[@rushvi1611]

sir, why would you put the bulb of the thermometer inside, how is it possible to read the temperature and isnt the tip of the thermometer the part able to detect change?

[@theclutchhawk1034]

Rushvi Shah the bulb of the thermometer detects change, you can read the temperature along the sides of the thermometer as the red bar rises up

[@kashifhussain4898]

Question: does this have anything to do with thermal decomposition?!

[@sys8656]

im a bit late mate but thermal decomposition is an example of an endothermic reaction