I have been looking for a CHEM2 thread without any luck, just wondering how people are preparing for the CHEM2 exam which is on the 02 June 2015. Is everyone feeling prepared. I am an A2 student resitting CHEM2 hence why I feel CHEM2 is easier having done A2 but a big jump from GCSE, feel free to ask questions.
I am about 4 inches tall compared to the dy/dx of the speculative comparison. You know the severity of your actions compete with the nature of ur bringing up to display the volume of the spherical consequence. I don't know how to go about differentiating the nuclear envelope but hopefully the atomic radius will comply with the are under the mobilised transponder. Specifically cholesterol would affect the nature of the wave but the diffraction isn't a vector quantity unless u take into consideration the function of the supine protoplasmic invertebrate jellies in which the perpendicularity of the semi colon will determine the angle made. But i dunno really the amino acids got me messed up, What about u? Oxidising alcohols and legitimacy of the carboxylic acids will almost definitely connote to the anagrams of surplus.
I am about 4 inches tall compared to the dy/dx of the speculative comparison. You know the severity of your actions compete with the nature of ur bringing up to display the volume of the spherical consequence. I don't know how to go about differentiating the nuclear envelope but hopefully the atomic radius will comply with the are under the mobilised transponder. Specifically cholesterol would affect the nature of the wave but the diffraction isn't a vector quantity unless u take into consideration the function of the supine protoplasmic invertebrate jellies in which the perpendicularity of the semi colon will determine the angle made. But i dunno really the amino acids got me messed up, What about u? Oxidising alcohols and legitimacy of the carboxylic acids will almost definitely connote to the anagrams of surplus.
Haha, Im guessing you do maths biology and chemistry, quite a unique revision teqnique you got there
[QUOTE=baffledchick;56168803]How long do you reckon memorising content will take? I'm trying to do it by the end of today.
Not long without distractions of course. I started yesterday it went awful I was planning to finish all of energetics, kinetics and equilibria. And had to make a thread because I was stuck on mean bond enthalpy erggg I'm so stressed out
Not long without distractions of course. I started yesterday it went awful I was planning to finish all of energetics, kinetics and equilibria. And had to make a thread because I was stuck on mean bond enthalpy erggg I'm so stressed out
Gives me hope, I wasted yesterday and the day before too ( really need to smash this exam but just can't get round to memorising it, if you need any help let me know I can try and help you out, how did you find unit 1?
[QUOTE=baffledchick;56168847]Gives me hope, I wasted yesterday and the day before too ( really need to smash this exam but just can't get round to memorising it, if you need any help let me know I can try and help you out, how did you find unit 1?
Thank you and same here just pm me if you need help!😊 and unit 1 was a complete flop for me despite having completed every single past paper I could possibly find and finding my own questions online. I think because we're the last year with this spec they're giving us the full wrath of it all which other years did not have but then again most found the exam ok.
Guys do you have any tips on how to memorise all the mechanisms?!
A tip my teacher taught me was to look at the reactants and products.
Nucleophilic sub: Nucleophiles like to attack HALOALKANES. The lone pair of the Nucleophile attacks the carbon on the C-X bond. An election from the C-X bond attacks the X (shown by arrows) and you simply replace X with the Nucleophile and you're all set.
Elimination: HALOALKANE --> ALKENE + HALOGEN OH acts as a base. To favour elimination, we use ethanol as a solvent. Remember the waterfall shape: |_. _| | or | OH always attacks the hydrogen which is attached to the carbon adjacent to the carbon attached to the halogen. Major and minor products are formed. Primary haloalkanes prefer sub Tertiary haloalkanes prefer elim
Free-radical sub (HALOALKANE SYNTHESIS) Initiation: X2 --> 2•X Propagation: starting molecule + •X --> HX + •staring molecule minus a H •starting molecule minus a H + X2 ---> startX + •X Termination: •start + •X---> HALOALKANE
Electrophilic addition: starts off with ALKENES. Br2 HBr H2SO4 Arrow from = to slightly positive Arrow from bond holding Electrophilie to slightly negative
Slightly negative becomes negative. Attacks C+ on the carbocation Tertiary: most stable carbocation