Qualification > Sciences
CHEM AND BIO HELP AND TIPS HERE
The Golden Girl =D:
can u plz tell me what compounds/things that r insoluble +++ and what r the things that are flammable?
thx in advance
Ghost Of Highbury:
Insoluble compounds.
Chlorides, bromides, iodides of silver and lead.
Sulfates of Calcium, barium and lead.
All hydroxides except those of group 1
All carbonates except those of group 1
Metal oxides except group 1 and 2s.
--
Flammable : Most alkanes, kersoene, petrol and naturally occurring oils.
haris94:
Thanks a lot adi
Ghost Of Highbury:
NO PROBLEM.
LLawliet81:
Hello all, i'm newbie here...
I take A-Level for Biology on this May-June session and still need some helps.
May i ask my doubt about how to answer the question, whether the answers are short and simple like in the mark scheme or we must explain more on every point in mark scheme ? And what is the meaning of word "reference" in mark scheme?
Bonus Question: How to answer the last part (looong essay part) of P4 ?
Need your help, because my school teacher never give us explanation about it.
Thx before and sorry if my questions are out of the thread :)
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