there are so many websites that would charge soo much money for these videos! and you're providing this all for us, for free! Thank you so much for all your effort, these videos are so brilliant!
I don't even do A2, but am just learning some of it, especially organic, from your vids. You're probably the single most useful revision resource. Tyesm
my textbook says that lattice enthalpy is negative because "bonds are broken and energy is released". Surely its because bonds are formed is why its exothermic?
Hello Sir, thanks for another brilliant video! I'm a bit confused about two terms - nuclear attraction and electrostatic forces of attraction. I thought nuclear attraction was the attraction between a positive nucleus and an electron, so why is electrostatic forces of attraction used to describe ionic bonding? I thought in ionic bonding an electron from one atom is donated to another atom to form two ions, so is this not nuclear attraction? (I saw 'do not accept nuclear attraction' on Q1d of the June 2012 F325 mark scheme)
You're right with your definition of nuclear attraction. Electrostatic attraction is the attraction between oppositely charged species e.g. a positive and negative ion, a positive nucleus and negative electron etc. Nuclear attraction occurs within a single species. Lattice enthalpy is due to the attraction between two separate ions so that's why you can't say that
Ahh right okay thanks! So enthalpy changes like ionisation energy would be nuclear attraction because it involves one species but lattice enthalpy is electrostatic attraction because it involves two? Which one would electron affinity be? Sorry about all the questions!!
there are so many websites that would charge soo much money for these videos! and you're providing this all for us, for free! Thank you so much for all your effort, these videos are so brilliant!
Amtul Noor Ahmad Just happy to help. Many thanks for your kind words. Good luck!!
Fantastic set of videos, takes the pressure off textbook revising. Thanks a lot for these!
vDuoHD you're welcome - thanks for taking the time to comment
I don't even do A2, but am just learning some of it, especially organic, from your vids. You're probably the single most useful revision resource. Tyesm
dank memes11111111 Wow! Thanks for that!!!
Really helpful explantion - thank you for making this video!
Thank you for uploading these videos, they are great help. Can you please do a video on entropy and free energy? Thanks.
thanks so much this is really good!
Great video, when should we talk about charge density or electron density?
my textbook says that lattice enthalpy is negative because "bonds are broken and energy is released". Surely its because bonds are formed is why its exothermic?
Chris John Bond breaking is an endothermic process. Text book is wrong
This is the textbook right here but as a RUclips channel look no further Chris
Thank you so much! much appreciated .
Hello Sir, thanks for another brilliant video!
I'm a bit confused about two terms - nuclear attraction and electrostatic forces of attraction. I thought nuclear attraction was the attraction between a positive nucleus and an electron, so why is electrostatic forces of attraction used to describe ionic bonding? I thought in ionic bonding an electron from one atom is donated to another atom to form two ions, so is this not nuclear attraction? (I saw 'do not accept nuclear attraction' on Q1d of the June 2012 F325 mark scheme)
You're right with your definition of nuclear attraction. Electrostatic attraction is the attraction between oppositely charged species e.g. a positive and negative ion, a positive nucleus and negative electron etc. Nuclear attraction occurs within a single species. Lattice enthalpy is due to the attraction between two separate ions so that's why you can't say that
Ahh right okay thanks! So enthalpy changes like ionisation energy would be nuclear attraction because it involves one species but lattice enthalpy is electrostatic attraction because it involves two? Which one would electron affinity be? Sorry about all the questions!!
+Rach J I'd just go for electrostatic attraction every time as it's always right.
Okay thanks!
sir why is it difficult to use LE for Na2CO3??
Great videos btw
Quiet a few atoms that are unlikely to react/ collide. Also, it's hard to get gaseous ions.
its hard to split up the co32- ion into two separate ions bcos that the one thats used
im at uni now, thank u anyways xx
@@zannatul23 What are you up to 7 years later?
@@theredstonebuilder1120 finished uni, worked for 2 years, about to take a break and perhaps get married
Tysm x
Welcome :)