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just consider geometry and electronegativities! go through george's stuff.. he's good!

u dun need much info Lavoisier- all acids contained oxygen Davy - acids had replaceable hydrogen Arrhenius - acids when dissolved in h20 make hydrogen ions bases ... make hydroxide ions these ideas are unsuitable because: *does not take into account non-metal...

Thanks George ur a legend especially considering u have a coaching business and ur still giving us all these sheets!!

i cannot wait til skools out...

have u learnet partial fractions yet... cos that is like the first q's u do...

yay i got em all right (as i expected lol)

i dont like your statement "have an equal chance". they always had an equal chance at doing welll boys just like to make the excuse that since the course is more theory based girls have more chance at success. come on

KANT declared “I maintain that in each natural science there is only as much true science as there is mathematics" Why then are the BOS so intent on removing the maths from phys and replacing it with a memory test on the stupid dotpoints which by now are so banal and lame. Am i alone...

Chem Coach ... George do u have the answers.... 6 wasn't 100% sure but figured the other answers had to be redox..

8 u do by looking at a periodic table and u see thaht Nickel has an atomic number 1 greater than Co-60 and atomic mass remains the same therefore the missing particle is : 0 e -1 which is a berta particle - high energy electron not just an electron and for 3 u divide the molar...

with 7 u have to reverse the sign for the Sn2= as it is being oxidised an the table is for reduction so u get +0.14V for the tin part and then the cl2 is reduced so it stays as 1.36V and adding those gives 1.5V

Hopeful :rolleyes: how are these looking D B C A B D D A A B A A