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Edexcel A Level Chemistry 2019

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also guys what major calculations do we need to know for paper 1?

There'll probably be some acid base calculation like ph of a buffer solution or something. Then there's all the entropy and enthalpy calculations as well as some titration calculations

Reply 41

z20010318

Original post by hira671

also guys what major calculations do we need to know for paper 1?

All the Enthalpy and Entropy ones are the main bulk

Reply 42

lolasmithy

Please can someone explain why transition metals can form variable oxidation states?? I am so confused

Reply 43

DragonsOfAsshai

Original post by lolasmithy

Please can someone explain why transition metals can form variable oxidation states?? I am so confused

Ionisation energies are low and gaps between ionisation energies are low

Reply 44

hira671

ahhh ok so no combustion analysis until paper 2 and 3 right?

Original post by DragonsOfAsshai

There'll probably be some acid base calculation like ph of a buffer solution or something. Then there's all the entropy and enthalpy calculations as well as some titration calculations

Original post by z20010318

All the Enthalpy and Entropy ones are the main bulk

Reply 45

z20010318

Original post by hira671

ahhh ok so no combustion analysis until paper 2 and 3 right?

Yeah Cus that’s in Organic Chemistry II- still need to learn some of the organic synthesis reactions:///

Reply 46

hira671

lol sameee.. gonna have to cram those the night before

Original post by z20010318

Yeah Cus that’s in Organic Chemistry II- still need to learn some of the organic synthesis reactions:///

Reply 47

z20010318

Original post by hira671

lol sameee.. gonna have to cram those the night before

Honestly I keep looking at them like I’m gonna do it but i just keep putting it off idk how to learn something that big parrot fashion

Reply 48

hira671

whats this parrot thing? i literally use this massive flow diagram thing for tm

Original post by z20010318

Honestly I keep looking at them like I’m gonna do it but i just keep putting it off idk how to learn something that big parrot fashion

Reply 49

z20010318

Original post by hira671

whats this parrot thing? i literally use this massive flow diagram thing for tm

Parrot fashion is like learning it off by heart with no real understanding you’re kinda just regurgitating information. Idk how the flow diagram helps I need to write it out loads of times

Reply 50

dx31

Does anyone have the set papers please!!!

Reply 51

z20010318

Original post by dx31

Does anyone have the set papers please!!!

What are they

Reply 52

Leah.J

Hey guys, do we have to know why the real colour of Fe3+ ( purple ish ) doesn't show in solution and why we see a yellow brown ish colour instead ?

Reply 53

Leah.J

And what is the hardest chem paper you've done so far ?

Reply 54

z20010318

Original post by Leah.J

Hey guys, do we have to know why the real colour of Fe3+ ( purple ish ) doesn't show in solution and why we see a yellow brown ish colour instead ?

Real Fe3+ ions are “straw” coloured- it turns purple sometime because of impurities in the lab I’m pretty sure

Reply 55

aspiringmedic000

Hey guys!

How ready is everyone feeling for tomorrow?

Also do you think there will be Hess' law cycle questions? I'm fine with Born-Haber cycles but mess up on Hess' :frown:

Any other predictions?

Reply 56

z20010318

Original post by aspiringmedic000

Hey guys!

How ready is everyone feeling for tomorrow?

Also do you think there will be Hess' law cycle questions? I'm fine with Born-Haber cycles but mess up on Hess' :frown:

Any other predictions?

I think they’ll be Born Haber cycles more- Hess’ Law is more in the AS Papers but you never know.

Acid Base and Enthalpy and Entropy are defo ones to look out for along with Rates and TMs etc

Reply 57

aspiringmedic000

Original post by z20010318

I think they’ll be Born Haber cycles more- Hess’ Law is more in the AS Papers but you never know.

Acid Base and Enthalpy and Entropy are defo ones to look out for along with Rates and TMs etc

Ahh cool. Yeah definitely.
What do you mean by rates? Do you mean orders of reactions, rate equations etc? Those are topic 16, which won't be in the paper I believe?

Reply 58

z20010318

Original post by aspiringmedic000

Ahh cool. Yeah definitely.
What do you mean by rates? Do you mean orders of reactions, rate equations etc? Those are topic 16, which won't be in the paper I believe?