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  1. Abu mota

    Physics, Chemistry and Biology: Post your doubts here!

    biology or chemistry?
  2. Abu mota

    Physics, Chemistry and Biology: Post your doubts here!

    yes ,pretty sure :D
  3. Abu mota

    Physics, Chemistry and Biology: Post your doubts here!

    NaAlO2, i dont think we have to know that though
  4. Abu mota

    Chemistry Paper 1

    http://www.freeexampapers.com/past_papers.php?l=Past_Papers%2FIGCSE%2FChemistry%2FCIE/
  5. Abu mota

    Physics, Chemistry and Biology: Post your doubts here!

    if u halved the volume, all of the heat will be concentrated in a small area and so the temperature increases but if u increased the area the heat will spread everywhere reducing the temperature :)
  6. Abu mota

    Physics, Chemistry and Biology: Post your doubts here!

    idk if anyone answered u yet, but for Q.4 it says which can be correct and so if u start with already a noble gas and moved 8 protons u will also end up with a noble gas and so it will be unreactive and will be in the same group and also atomic number is 2 then 10 then 18, i guess ur periodic...
  7. Abu mota

    Prediction of Grade Thresholds for May-June 2012!

    http://www.9gag.com/gag/4422479
  8. Abu mota

    Prediction of Grade Thresholds for May-June 2012!

    i hit it 2 to 3 years ago and btw i'm 16 and i just checked ur profile and u r 15 :rolleyes: btw everyone here has to have hit puberty, this comment actually made u alot stupider and btw im done with this conversation, go do something with ur life.
  9. Abu mota

    Prediction of Grade Thresholds for May-June 2012!

    lol ur talking as if UAE is a mafia and theres like gangs and drugs, UAE is actually one of the safest countries on earth and so how am i a pussy for not going there??? dont understand that at all.
  10. Abu mota

    Chemistry Ya Rab .

    nope it isnt, i think u got confused, an acid doesnt show its acidic properties unless dissolved in water and so before dissolving in water it is techinically not an acid (thats why litmus paper have to be damp), the original pH of the water is 7 but when this acidic substance is added it...
  11. Abu mota

    Prediction of Grade Thresholds for May-June 2012!

    ok im tired of this game, go study :p
  12. Abu mota

    Prediction of Grade Thresholds for May-June 2012!

    lol, this is a comment :p
  13. Abu mota

    Chemistry Ya Rab .

    a water is like a medium that tells us if this substance is acidic or alkaline and as you know from the pH chart acidic is from 1 to 6 and alkaline is from 8 to 14 and so when an acid dissolves in water the ph will decrease this is because the original pH of the water is actually 7, however when...
  14. Abu mota

    Prediction of Grade Thresholds for May-June 2012!

    i think now i got it, after some analysis, do u mean that both gts can be low???
  15. Abu mota

    Prediction of Grade Thresholds for May-June 2012!

    dont want u to get mad bro :p i rlly didnt understand what u said but now that i understood it, i have no idea what does this have to do with what i just said a few minutes ago
  16. Abu mota

    Prediction of Grade Thresholds for May-June 2012!

    what u just said makes absolutely no sense to me??? cud u use better english plz
  17. Abu mota

    Chemistry Ya Rab .

    i didnt study for paper 1 at all, i just did papers, this i studied for paper 3 :rolleyes:
  18. Abu mota

    Prediction of Grade Thresholds for May-June 2012!

    check variant 2 may/june 2011 and variant 1 may/june 2011 u will find variant 1 is alot harder but does that mean that everyone who did variant 2 is stupid and will never be able to do variant 1? no it doesnt, it just simply means u got an easier exam, does hard or easy, make a differnece? no...
  19. Abu mota

    Chemistry Ya Rab .

    science isnt just for examinations, it is for life ;)
  20. Abu mota

    Chemistry Ya Rab .

    i will try to explain it, the substance only shows its acidity or alkalinity only when it is dissolved in water, this is because pH is the measure of the concentration of H+(which only form when the acid or the alkaline dissociate in water) the higher the concentration of H+ the lower the pH, u...
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