Required Practical CHLOROPHYLL CHROMATOGRAPHY for A-level Biology. Do you know what an Rf value is? 

you are a lifesaver my biology teacher is always absent and yr13 is stress but your videos are keeping me going , thank you so much

Thank you so much for this, I just did this practical but I’m rubbish at biology and had no idea what to write for the conclusion!

Much appreciation!!

Thank you so much very interestingbut can make a video of all as practical biologyincluding exam questions to be solve too.

hi, whats the independent variable for this experiment? would it be the leaves being investigated? the solubility of pigments found in leaves being investigated? or maybe the solvent used?

My teacher never tell us the method before the day of the practical so this is very useful, thank you!!!!

please is all plant pigments collectively called chlorophyll? Am asking this because i know carotene, zanthophyll, phaeophytin etc are different pigments and are not called chlorophyll

Hi, Thank you so much for this video but I'm unsure whether I should draw a graph to compare the Rf values?

Hii, i think u may have forgotten to include this video in the topic 5 playlist. Thanksss

Hi Miss, would the method used here also be applied to carbohydrates and amino acids in 1.2 and 1.4? Thank you :)

I think u should try and get model answers.