haha my school made me do chemistry and physics last year (im doing my biology triple this year). So happy the stress is gone however i wont lie the 2015 paper was much harder than the 2016 ones
haha my school made me do chemistry and physics last year (im doing my biology triple this year). So happy the stress is gone however i wont lie the 2015 paper was much harder than the 2016 ones
I struggle with the maths of chemistry ! I can't find anywhere that just gives me loads of chemistry questions for the maths side of thing as I feel with maths only way to learn is practise... Anyone got any resources that has loads of the maths questions including all the equations and so on?
I personally think the C123 paper this year was amazing and very easy. So I think they're gonna be mean with this one :/ be prepared
Yeah I agree, I'm very hopeful for core science now cos of that core chemistry paper👌🎉 however im still trying to learn c5&6 so I'm worried. In all of my mocks I only managed to get a B in additional chemistry.
Yeah I agree, I'm very hopeful for core science now cos of that core chemistry paper👌🎉 however im still trying to learn c5&6 so I'm worried. In all of my mocks I only managed to get a B in additional chemistry.
Aha same, after that exam for a moment I actually believed I was good at chemistry.... then I looked through the C456 notes. My opinion changed!! That's still a good grade, just do tonnes of past papers to boost it up. I do triple so this C456 exam will impact my C123 exam
Will it?? I do the double award so core and additional so I get a separate grade in core chem to additional chem. So how does yours work then? Do you get a grade for chemistry c1-6 then one for biology then physics separately? Do you do c7 as well?
Will it?? I do the double award so core and additional so I get a separate grade in core chem to additional chem. So how does yours work then? Do you get a grade for chemistry c1-6 then one for biology then physics separately? Do you do c7 as well?
I do triple science Even though, i'm not even going to do science in the future... English is way better
Anyway, i get one grade for chemistry, one grade for biology and one grade for physics.
Does anyone have the 2015 paper? I've literally done every other one and I need one to do!! For me C4 is the easiest chemistry unit ever, but C6 is a nightmare so definitely gonna need to focus on that!
hey, I was wondering if anyone could explain electrolysis for me...??
Here's my take on it....
Basically electrolysis is used to separate ionic compounds that cannot be separated by carbon as they are more reactive than carbon, for example aluminium (Al3O2). Electrolysis used electricity to chemically decompose the ionic compound to get the pure form eg to separate the aluminium from the oxygen as we want to use aluminium. The aluminium (called the electrolyte) needs to be molten so that the ions are a free to move and can complete the circuit. The aluminium ions are positively charged and move to the negative electrode called the cathode. Here the aluminium ions gain electrons to become neutral aluminium atoms. Whereas at the positive electrode (the anode) negatively charged oxygen ions move here and lose electrons to become neutral and oxygen atoms. The aluminium is pure and is now separated from the oxygen.Aluminium is in group 3 so it has a 3+ charge, therefore it needs 3 electrons to become neutral.Oxygen has a -2 charge so needs to lose 2 electrons to become neutral. Don't forget that oxygen is a diatomic molecule so at the end you'll need to write O + O = O2.