This week Joe from Think Physics came to our class to teach us all about chromatography…we became chemical engineers! Chemical engineering is all about turning raw materials into useful everyday products (in our experiment we tested coloured pens).
We tested a range of different pen inks to see what colours made up their mixtures. We drew a coloured line on some filter paper and added it to water. The ink dissolved in the water and became a solution. This then travelled up the filter paper to reveal the colours in each ink. It was exciting observing which colour solution had been mixed together to make a specific colour. Take a look at our photos to see the results of our experiment.
Year 4 would like to thank Joe for coming to work with us. Science is certainly a fascinating subject and we can’t wait to work with him again.