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VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Chemistry => Topic started by: soccerboi on June 05, 2012, 10:49:16 am

Title: Complementary colours and the wavelengths they absorb
Post by: soccerboi on June 05, 2012, 10:49:16 am
Since it's not on the data booklet, do we need to commit to memory the complementary colours and the wavelengths at which  they absorb? i.e table 7.4 on pg 85 of heinemann textbook.
Title: Re: Complementary colours and the wavelengths they absorb
Post by: charmanderp on June 05, 2012, 04:46:30 pm
No, just have a general understanding. You might be required to interpret the information if they give it to you.
Title: Re: Complementary colours and the wavelengths they absorb
Post by: Mao on June 05, 2012, 04:51:13 pm
Surely the colour wheel is enough?
Title: Re: Complementary colours and the wavelengths they absorb
Post by: charmanderp on June 05, 2012, 05:06:09 pm
It's kind of hard to memorise though haha.
Title: Re: Complementary colours and the wavelengths they absorb
Post by: Mao on June 05, 2012, 06:14:52 pm
It's the rainbow in a circle? You surely know the colours of a rainbow right?
Title: Re: Complementary colours and the wavelengths they absorb
Post by: AllAboutTheLGs on June 05, 2012, 06:22:37 pm
I thought there were 7 colours in the rainbow? Whats the 8th?
Title: Re: Complementary colours and the wavelengths they absorb
Post by: charmanderp on June 05, 2012, 06:28:00 pm
Quote from: Mao on June 05, 2012, 06:14:52 pm
It's the rainbow in a circle? You surely know the colours of a rainbow right?

Aaah I hadn't made that connection before.
Title: Re: Complementary colours and the wavelengths they absorb
Post by: charmanderp on June 05, 2012, 06:28:32 pm
Quote from: choong on June 05, 2012, 06:22:37 pm
I thought there were 7 colours in the rainbow? Whats the 8th?

There are seven, but the colour wheel splits the seven colours up.
Title: Re: Complementary colours and the wavelengths they absorb
Post by: AllAboutTheLGs on June 05, 2012, 06:29:54 pm
oh i see i thought that logically, it would be split into 8 equal sections
Title: Re: Complementary colours and the wavelengths they absorb
Post by: charmanderp on June 05, 2012, 06:33:47 pm
Nah because red, orange and yellow are pretty much the same thing with just a few shades in between, which applies to indigo and violet  also, which are like one each. And then three from blue and two from green.

I'm assuming it has something to do with the whole primary-secondary-tertiary colours system.
Title: Re: Complementary colours and the wavelengths they absorb
Post by: Tonychet2 on June 05, 2012, 07:39:56 pm
                O             
R                           Y



I+V                         G
               B

its roygbiv but indigo and violet are together
Title: Re: Complementary colours and the wavelengths they absorb
Post by: Mao on June 06, 2012, 01:31:44 am
Quote from: charmanderp on June 05, 2012, 06:28:00 pm
Quote from: Mao on June 05, 2012, 06:14:52 pm
It's the rainbow in a circle? You surely know the colours of a rainbow right?

Aaah I hadn't made that connection before.

Really? From memory, that colour wheel was in every chemistry textbook...
Title: Re: Complementary colours and the wavelengths they absorb
Post by: charmanderp on June 06, 2012, 02:44:55 pm
I've never actually used my textbook :/
Title: Re: Complementary colours and the wavelengths they absorb
Post by: Mao on June 06, 2012, 03:25:41 pm
Quote from: charmanderp on June 06, 2012, 02:44:55 pm
I've never actually used my textbook :/

There lies your problem. :P
Title: Re: Complementary colours and the wavelengths they absorb
Post by: jadams on June 06, 2012, 03:41:50 pm
Quote from: charmanderp on June 06, 2012, 02:44:55 pm
I've never actually used my textbook :/

Same here, I just have 500+ pages of notes from my teacher.
Title: Re: Complementary colours and the wavelengths they absorb
Post by: AllAboutTheLGs on June 06, 2012, 04:03:06 pm
No one actually uses the textbook at our school. Or does the set questions
Title: Re: Complementary colours and the wavelengths they absorb
Post by: jadams on June 06, 2012, 04:25:41 pm
Quote from: choong on June 06, 2012, 04:03:06 pm
No one actually uses the textbook at our school. Or does the set questions
This.
Title: Re: Complementary colours and the wavelengths they absorb
Post by: charmanderp on June 06, 2012, 04:43:53 pm
Quote from: choong on June 06, 2012, 04:03:06 pm
No one actually uses the textbook at our school. Or does the set questions

I think everyone except us has actually done the set questions haha.