Qualification > Sciences
IGCSE CHEMISTRY DOUBTS HERE !!!!
Most UniQue™:
--- Quote from: ~ Miss Invisible ~ AKA GG on May 24, 2011, 07:12:28 am ---can ya give me a link of the paper.
--- End quote ---
http://www.freeexampapers.com/past_papers.php?l=Past_Papers%2FIGCSE%2FChemistry%2FCIE%2F2005+Jun/
The Golden Girl =D:
--- Quote from: Most UniQue on May 24, 2011, 07:11:07 am ---M/j 2005 p62 Q8
Plz help got exam tomorrow Thanks in advance:D
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I'll give you the General Idea behind it.
You put a known amount of hydrogen peroxide in a test tube that is connected to a gas syringe and burn the test tube/allow the powder inside it to decompose ... for certain time intervals ex every 1 minute record the time and the volume of gas collected
the one the gave out the most gas in the same period of time is the best catalyst.
I hope I helped :)
Most UniQue™:
--- Quote from: ~ Miss Invisible ~ AKA GG on May 24, 2011, 07:33:38 am ---I'll give you the General Idea behind it.
You put a known amount of hydrogen peroxide in a test tube that is connected to a gas syringe and burn the test tube/allow the powder inside it to decompose ... for certain time intervals ex every 1 minute record the time and the volume of gas collected
the one the gave out the most gas in the same period of time is the best catalyst.
I hope I helped :)
--- End quote ---
Oh okaaa tnxxx!!!! ;D ;D
Most UniQue™:
and By the way for the same paper,q6c, should i draw a chromatograph or explain?
The Golden Girl =D:
--- Quote from: Most UniQue on May 24, 2011, 07:49:43 am ---and By the way for the same paper,q6c, should i draw a chromatograph or explain?
--- End quote ---
Explain but Whenever I had chromatography exps , My teacher used to say that we have to draw and explain.
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