*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)
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!
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*
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 :’)
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.
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!!!
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! 💖
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.
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.
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? :)
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.
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
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?
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.
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)?
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).
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?
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 :-)
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?
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.
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?
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)
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
![Blox Fruits Dragon Rework Update [Full Stream]](http://i.ytimg.com/vi/EqDAp8udhm0/mqdefault.jpg)
There is a special place in heaven for this man
yes
Maybe God is saving FreeScienceGuy a seat beside him
@@jamie_sg freesciencelessons*
he is a beauty
@@t___939 🤓
Test tomorrow, good luck.
Good luck to you too.
g'luck !! we'll do amazing cos of these videos lol
You too
good luck
Fail time!
I swear this comment section is so wholesome. And to anyone taking exams, good luck!! Hope you do well
tbh i just hope next year’s exams are either easier or just cancelled altogether
@@xfreja year 10? I am. I’ve got all my mocks lol this week so I’m bashing out his vids
nice pfp
THIS CAME UP AS A SIX MARKER- THANK YOU ANGEL!!!!!!!
*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)
NAHH BENDO AND MEXO THAT’S GENIUS IVE BEEN STRUGGLING TO REMEMBER THAT THE WHOLE TIME!!!
@@tikifi1234 glad to help! 😁
THATS SO SMART YOU GENIUS I LOVE THIS IVE BEEN STRUGGLING ASWELL TYSM
Genius
My guy
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!
for higher?
Only titrations if you are doing triple of course.
Good luck today test in about 2 hours
it's todayyy
@@rohitadyanthaya7600 what did u get?
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*
Good luck. I hope that you get the grade that you want.
Did you end up getting a good grade?
We really need answers
How did your exam go?
yo, update ;D?
Haven't had a chemistry teacher for the whole half-term, my test's tomorrow and I'm trying to learn everything now
This is one of the listed practicals for my gcse this year, thank you for making these accessible to everyone :)
Cheers 👍🏼
Love the new suit fam 🔥🔥🔥
you saved my life today in biology I can't thank you enough your a true hero and living legend!!!
Honestly
this is chemistry, wrong turn
Which paper did you do?
just finished binge-watching the entire 2022 playlist triple paper 1 ready for tomorrow 😭#gcse2022
cmon me too g
literally me rn
Literally same
same bro
same. best of luck today!!!
Good luck in your chemistry exam 🙏🙏🙏👍👍👍👍
thanks bro
thanks my g
papa bless all our souls 🙏🙏🙏 🙏🙏🙏 🙏🙏🙏 🙏🙏🙏
you too
🙌🙌
Watch at 1.5x speed to get through everything for tomorrow’s exam :)
2x speed is a whole new experience
it is quite literally only 5 minutes long
Kovaakdjokovic yuppp i watch literally every single yt video on 2x speed lmao
@@xfreja even videos u enjoy watching?
Rah, this man is actually gonna make me pass science
Protect this man at all costs
I’m so glad this exists
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 :’)
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.
gcses in a week crazy
Got a test tomorrow this has been truly helpful hope you continue in the future thank you!!
i want this man to teach every subject
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
A LIFE SAVER
THANK YOU SO MUCH
This man is a saint and saved me in my GCSEs
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!
Good luck 🫡
fr bro its february and ive started locking in
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!!!
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
there is 10 hours till the exams and I'm cramming like I always am
good luck guys
You are doing Gods work keep it up
This guy is definitely going to heaven!! i dont even know why i wasted my time on our science teachers
Michael Nyamaka this guy taught me more i 1 hour than my science teacher did in 5 years
The paper’s on Monday.
Aiming for a 8 😄
Got a 5 in the mock
Pray for me
Can you do a playlist with all the required practicals in?
Thank you!
He has
You're actually amazing
Revising this just before my exam, wish me luck lads, I’ll tell you guys what I got
what did u get?
what did u get
what did u get?
Good luck all for the exam tomorrow. You'll all do great!
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! 💖
It came upp on the exam(combined higher)thanks for giving me free 5-6 marks❤️
I found the exam quite easy as electrolysis, temp changes and titration came up on the triple higher paper.
Ahhhh watching these video are SO HELPFUL YES
Chem exam in just under 2 hours. This man is saving my life.
can you use sodium carbonate instead if the solution.
gcse basically today i just wanna say thank you
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:)
I love your videos freesciencelessons
Best Revision Helper. Ever.
got chemistry Paper 1 tomorrow and these videos are so helpful THANK YOU!!!!
Probably the last freesciencelesson vid i will see for chem paper 1
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.
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.
due no running in lab no drinking acids wear goggles bruh -
Your videos saved me at gcse!! Are you going to do alevel videos? Thank youuu
Jess Brownley he probably will, after he is done with GCSEs. Maybe the IB too...
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? :)
yes, it is the same for each
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
so glorious, may God bless you brother
finished the playlist ready for tomoz xx
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!
It simply reduces thermal energy transfers (just like the polystyrene cup).
@@Freesciencelessons thanks!
it reduces heat loss to surroundings; basically you want to make sure that as little heat escapes from the system as possible
thank you so much i have a chemistry test tomorrow 🧡
Great video helps a lot
God bless this man
good luck lads lets get these grade 9s in the bag
Should I revise actual Chemistry or farming?
If it releases energy, how come the temperature increases? Sorry if it's a stupid question aha
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.
Also because its an exothermic reaction
The energy released is thermal energy
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
Well I guess its too late.
This guy is my new religion
day before mocksss
chemistry paper 1 test tomorrow!! hoping that I do good! thank you sir!
Love how there's Mr Beast honey ad before his vid. 2 men of class, Mr Beast and FreeScienceLessons
Finished the playlist 15 min before the exam cyamon
Who's here for 2023 exams
sick video, my mate C
hippie told me about it
Class of 2020 we you at⭐️
that's not a thing mate
binge watching his whole playlist for tomorrow
Test tomorrow. Good luck to anyone who sees this
Is it your practical class? If you showing something practical then more understand. Anyway...its always great for me.
just got through the whole playlist a day before my exam😭😭
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?
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.
Ye I was confused also, but as always freesciencelessons comes in clutch
@@Freesciencelessons thank you!!
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)?
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).
What are the dependent independent and controlled variables
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?
I got sent this at the end of my remote lesson
love that tie
We like watch this in class.
imagine actually getting sleep the night before an exam lmao
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 :-)
You're allowed to do any reaction where there is an energy change so a displacement reaction is also fine.
my exams tomorrow😭
How can we then calculate the bond energy term given the standard enthalpy of atomization ??😢
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?
The molecules lose energy and this is transferred to the solution, which increases in temperature.
Freesciencelessons thank you so much!!
How would you tweak this experiment in order to test the effect of acid concentration or acid volume on sodium hydroxide?
All I can say now is good luck to all for tomorrow
Good luck to anyone watching this on your day of exam and good luck to everyone one
right so exams tomorrow and this is the only revision ive done so far
Sir, will the steps be in the chemistry paper?
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?
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.
exam tomorrow and u have saved me
would the graph not be a curve??
Question: does this have anything to do with thermal decomposition?!
im a bit late mate but thermal decomposition is an example of an endothermic reaction
Does this have anything to do with reactivity?
My school moved this topic to paper 2 so I nearly missed this required practical 😅
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 :)
I passed
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?
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)
why do u have to measure the temperature of the hcl before adding the naoh
So you can calculate the temperature change
after 4 hours the day before. completed every chemistry 2022 paper 1 vid
What does it mean by 10 cm cubed SO CONFUSED
It’s the unit for measuring a solution I think
1 omg thank you so much lol
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