Last lesson Chromatography. Chromatography chromatography paper.

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Presentation transcript:

Last lesson Chromatography

Chromatography chromatography paper

Chromatography Origin line drawn in pencil with a ruler Does not dissolve in water about 2 cm

Chromatography Four evenly spaced crosses drawn in pencil

Chromatography Four small dots made with different felt tip pens

Chromatography Dots must be above water level Don’t slosh the water about!

Chromatography pencil paper clip

Chromatography Make sure you take it out before the water reaches the top!

Another type of chromatogram

Homework Use at least 4 diagrams to show how to make a chromatogram. Can you also stick in the two chromatograms that you made? Due Friday 30 th April

Today’s lesson - Who murdered Mr Scott?

The suspects N C R

Today’s lesson Separating sand and salt

Filtration

Evaporation

Separating sand and salt Can you stick the instructions in the book and read carefully?