Aww, you'll probably have picked up a few marks! That sometimes happens to me when I skip some parts as I feel like it won't come up and to my luck, it does haha!

Original post by lucayah

i had a big flashcard on this question and it was the only one out of my 100 flashcards i did not memorise im sad

Reply 67

inayah133

Same!

Original post by leonl888

I said compare the RF with known substances and also to check a database

Reply 68

Natalia15

I said to boil the water and the reason was if it was pire water it would boil at 100 degress

Original post by lucayah

what did everyone put for the water test? I put test the pH but i'm wrong I think

Reply 69

Flower2617

Original post by djbello

Did you tatalk about comparing retention factors to data bases for the unknown substance

Yeah I did.

Reply 70

azeemdfghdghsd

less attracted the paper will go further

The more soluble he spot is the further it goes

vice vera

Reply 71

Flower2617

I knew 95% of the content on that paper (just not sustained delveopment never learn that in my life lol) and only managed to get an answer for one of the maths questions but the other two had working out which I definitely thjnk I will get credit for. Over all I think it was s pretty decent paper

Reply 72

Natalia15

You needed to also say that the gases absorbed the long wavelength radiation causi g the gases to be trapped in the earth and ozone layer which then contribute to global warming.

Original post by inayah133

I put that the greenhouse gases don't absorb the incoming short wavelength radiation from the sun. They absorb long wavelength radiation from the sun and re-radiate it in all directions including back to Earth. The longwave radiation is a thermal radiation and so it makes Earth hotter.