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September 10, 2025, 09:41:01 am
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Author Topic: Practice exams for the current syllabus  (Read 9989 times)  Share 

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StringFever

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Re: Practice exams for the current syllabus
« Reply #15 on: June 01, 2009, 07:40:36 pm »
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Oh great
Thanks Kat :)
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mk.billabong

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Re: Practice exams for the current syllabus
« Reply #16 on: June 02, 2009, 07:13:39 pm »
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does anyone have the insight 2009 chem exam?

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Dark Horse

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Re: Practice exams for the current syllabus
« Reply #17 on: June 02, 2009, 07:28:26 pm »
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Hey, Does anyone know where i can get the Neap Diagnostic Tests from? thanks :)

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StringFever

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Re: Practice exams for the current syllabus
« Reply #18 on: June 02, 2009, 11:04:36 pm »
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The NEAP books are always a good place to start. Most schools usually have them in the VCE section of their libraries.
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TrueTears

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Re: Practice exams for the current syllabus
« Reply #19 on: June 04, 2009, 11:38:02 pm »
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TSFX 09 exam, all thanks goes to kat148!!!

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arthurk

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Re: Practice exams for the current syllabus
« Reply #20 on: June 05, 2009, 09:01:25 pm »
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TSFX multi choice question 3
can someone explain why in NH3 the oxidation number of N is -1/3 i swear it was just -3 or maybe im just retarded
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TrueTears

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Re: Practice exams for the current syllabus
« Reply #21 on: June 05, 2009, 09:08:42 pm »
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The oxidation number of N is -3 :)
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arthurk

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Re: Practice exams for the current syllabus
« Reply #22 on: June 05, 2009, 09:10:47 pm »
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sighs at tsfx<.<
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arthurk

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Re: Practice exams for the current syllabus
« Reply #23 on: June 05, 2009, 09:12:57 pm »
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same exam multi choice 11
AAS does UV light?
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TrueTears

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Re: Practice exams for the current syllabus
« Reply #24 on: June 05, 2009, 09:19:12 pm »
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Quote from: arthurk on June 05, 2009, 09:12:57 pm
same exam multi choice 11
AAS does UV light?
Yes AAS is based on the idea that metal ions will emit the same wavelength of light as they absorb. Some metal ions will emit UV radiation as well (considering enough energy was added so the electron jump is really 'big', ie to a really high energy level, hence it releases more energy when it falls back down to its ground state), as a result you can shoot use UV radiation for that certain sample of metal ion for AAS.
« Last Edit: June 05, 2009, 09:22:56 pm by TrueTears »
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arthurk

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Re: Practice exams for the current syllabus
« Reply #25 on: June 05, 2009, 09:23:41 pm »
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so due to the fact that ions emit uv light we can say that AAS is based the absorption of visible and UV light
hmmm interesting
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TrueTears

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Re: Practice exams for the current syllabus
« Reply #26 on: June 05, 2009, 09:26:47 pm »
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Quote from: arthurk on June 05, 2009, 09:23:41 pm
so due to the fact that ions emit uv light we can say that AAS is based the absorption of visible and UV light
hmmm interesting
Yes because AAS is based on the fact that metal ions will absorb the same amount of energy needed to promote an electron to a higher energy level. Therefore if some metal ions can release UV light, it means they will also absorb it. But obviously you must shoot the exact wavelength of light required.
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arthurk

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Re: Practice exams for the current syllabus
« Reply #27 on: June 05, 2009, 09:30:03 pm »
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lol i wish i was that pro
that explains or 48 in SLA haha
Is it possible to shoot UV light through AAS set up? UV Cathode lamp ftw?
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aronno

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Re: Practice exams for the current syllabus
« Reply #28 on: June 06, 2009, 01:54:40 pm »
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hey mao do you have CSE 2009 exam?
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hyperblade01

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Re: Practice exams for the current syllabus
« Reply #29 on: June 06, 2009, 02:17:21 pm »
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Quote from: aronno on June 06, 2009, 01:54:40 pm
hey mao do you have CSE 2009 exam?

Here ya go. If you print it out, it's suppose to ressemble a booklet so yea :p
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