Friday, 3 April 2020
First it's great to get the children to predict what may happen once the experiment starts. Get them to write down their predictions.
You will need;
7 plastic cups/glasses
3 food colourings; Red, blue & yellow
Set the 7 glasses out in a row and fill every other cup with water. You should have 4 with water and 3 without water. Next add the same amount of food colouring to each cup. As you can see we had red in each of the end glasses and blue and yellow in the other two.
Next you need to fold the kitchen towel (and trim if needed) and put kitchen towel between each full glass and the empty glasses. Six pieces in total.
Now watch as the coloured water starts 'walking' towards the top of the glass and over into the empty glass. What is going to happen? Two colours are going into one empty glass so what colours do you predict will be in the empty glasses?
It didn't take the colours long to start moving and we checked back on the experiment every couple of hours to see what was happening. By the next morning we could do our final check to see what new colours had appeared in the empty glasses and which two colours had mixed to make the new colour.
Why not give it a try as a stay at home school activity and record your results as part of your school work.
The children loved this experiment, it was so quick and easy to set up and has great results.