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November 01, 2025, 01:08:59 pm
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Author Topic: memorise?  (Read 2800 times)  Share 

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Michael0007

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memorise?
« on: June 07, 2010, 06:44:29 pm »
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Doing practice exams we can see patterns and some important things to memorise.

Some examples are:

molar masses of CH3 (15), CH3CH2 (29), glucose (180)

Cr3O7 2- => Cr 2+, Fe 3+ => Fe 2+

Alcohols = Cn H2n+2 O, Esters = CnH2nO2

What do you guys think is important to memorise?

Which formulas? which equations? which molar masses? which states? etc.
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Souljette_93

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Re: memorise?
« Reply #1 on: June 07, 2010, 06:50:28 pm »
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I've memorised tryptophan's ( protein) Molecular formula since i get confused when i start to count the hydrogens...




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chansthename

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Re: memorise?
« Reply #2 on: June 07, 2010, 06:55:59 pm »
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Quote from: Michael0007 on June 07, 2010, 06:44:29 pm

What do you guys think is important to memorise?

Which formulas? which equations? which molar masses? which states? etc.

all of the reaction pathways with hydrocarbons

and don't forget asprin and salicylic acid etc. Mr (molar masses)

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crayolé

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Re: memorise?
« Reply #3 on: June 07, 2010, 06:59:47 pm »
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Umm
to kind of triple check your answers and have a gut feeling that its right
Aspirin content in tablets is always in the 300-350mg mark, nitrogen content in fertilisers is usually around 4-8%

Whats Trytophans formula? ;o
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samiira

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Re: memorise?
« Reply #4 on: June 07, 2010, 07:12:03 pm »
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do we need to memorize the salicylic acid and aspirin structure..??
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happyhappyland

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Re: memorise?
« Reply #5 on: June 07, 2010, 07:12:53 pm »
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penicillin is going to be on this years exam
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mankay

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Re: memorise?
« Reply #6 on: June 07, 2010, 07:55:58 pm »
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Quote from: happyhappyland on June 07, 2010, 07:12:53 pm
penicillin is going to be on this years exam

What makes you think that?
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VCE123456789

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Re: memorise?
« Reply #7 on: June 07, 2010, 07:56:24 pm »
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yer
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akira88

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Re: memorise?
« Reply #8 on: June 07, 2010, 07:57:30 pm »
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Quote from: samiira on June 07, 2010, 07:12:03 pm
do we need to memorize the salicylic acid and aspirin structure..??
It would be preferable to remember them :P
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TrueTears

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Re: memorise?
« Reply #9 on: June 07, 2010, 08:00:24 pm »
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Quote from: happyhappyland on June 07, 2010, 07:12:53 pm
penicillin is going to be on this years exam
is penicillin even on the course? i vaguely rmb asking my teacher this last yr and she said we didnt need to know bout it...
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iffets12345

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Re: memorise?
« Reply #10 on: June 07, 2010, 08:05:52 pm »
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If it IS on penicillin, itll probably be on structures/functional groups. I don't think its as relevant to the course as aspirin. Like, for aspirin, we know about cycloxygenase, prostaglandins. Penicillin, all I can remember is that it is from a mould and a form of antibiotics.
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Toothpaste

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Re: memorise?
« Reply #11 on: June 07, 2010, 08:13:46 pm »
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WHAT. DOESN'T THE STUDY DESIGN EXIST ANYMORE?
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m@tty

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Re: memorise?
« Reply #12 on: June 07, 2010, 08:20:37 pm »
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Quote from: iffets12345 on June 07, 2010, 08:05:52 pm
If it IS on penicillin, itll probably be on structures/functional groups. I don't think its as relevant to the course as aspirin. Like, for aspirin, we know about cycloxygenase, prostaglandins. Penicillin, all I can remember is that it is from a mould and a form of antibiotics.

What are these ? :-\
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Toothpaste

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Re: memorise?
« Reply #13 on: June 07, 2010, 08:27:07 pm »
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Quote from: m@tty on June 07, 2010, 08:20:37 pm
Quote from: iffets12345 on June 07, 2010, 08:05:52 pm
If it IS on penicillin, itll probably be on structures/functional groups. I don't think its as relevant to the course as aspirin. Like, for aspirin, we know about cycloxygenase, prostaglandins. Penicillin, all I can remember is that it is from a mould and a form of antibiotics.

What are these ? :-\
As if you have to know them. Dw.

But as a side note, COX determines what happens to arachidonic acids and usually arachidonic acids get turned into prostaglandins. PGs enhance responses to histamine and other inflammatory mediators. Aspirin just interferes with COX's and therefore prostaglandin synthesis, so it has anti-inflammatory effects.
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8039

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Re: memorise?
« Reply #14 on: June 07, 2010, 08:38:12 pm »
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For alcahols (alkanols) I like to remember CnH2+1OH

Hydrogen bonds = H-NOF

Diatomic elements = BrINClHOF

Glucose has two OH at the bottom while Galactose has OH and H
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