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George's Marvellous Medicine...

with a TWIST!

Katy Morris

on 26 October 2012

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Transcript of George's Marvellous Medicine...

with a TWIST!! George's Marvellous Medicine... George is the main character in the story 'George's Marvellous Medicine' by Roald Dahl In the story, he brews a special medicine for his horrible Grandma using different things, including... ...but, using safe liquids for children! Unlike George! We are going to make our own marvellous medicine with different liquids! The equipment we used: Ingredients of our marvellous medicine: First the honey, as this is the heaviest liquid... We are now going to pour each ingredient into a tall glass in a certain order using the baster.. Then, slowly add some washing up liquid, as this is a bit lighter than the honey... I have coloured the water red using food colouring so it is easier to see Next, add the water, as this is a bit lighter than the washing up liquid... Observe what has happened! Last of all, add the vegetable oil, as this is the lightest of all of the liquids! The different types of liquid form bands as they are added and do not mix! Therefore,
the lighter liquids (the vegetable oil and water) are
less dense
than the heavy liquids
(the washing up liquid and honey), so they float on top of the more dense layers. But why?! The term 'density' refers to the compactness of the molecules in a substance E.g. If you compare a rock and a ball that are the same size (they have equal volume), which is heavier? The rock is, because it has more mass.
The rock is denser than the ball as it has more molecules in it's volume than the ball Layer 4: vegetable oil (lightest!)
Layer 3: water
Layer 2: washing up liquid
Layer 1: honey (heaviest!) MARVELLOUS!! I hope you enjoyed this experiment! This experiment could be done with upper KS2 children if you are going into detail with scientific facts... but lower KS2 would enjoy it too! Honey Washing up liquid Water
(coloured red with food dye) Vegetable oil Drinking glass Baster Sc1 Scientific Enquiry:
Ideas and evidence 1a, 1b
Sc1 Investigative skills:
Planning 2c
Obtaining evidence 2e
Considering evidence and evaluating 2j, 2k, 2l
Sc3 Materials and their properties:
Grouping materials 1a, 1e Link to National Curriculum Aim: To find out what happens when we put 4 ingredients that are different weights into the same glass Honey Washing up liquid Water Vegetable oil Heaviest Lightest Most dense Least dense The children might predict that the liquids will mix together to form a mixture, much like George's marvellous medicine... They could measure out each of the liquids so they all have exactly the same volume, for example, 50ml The children could go on to make this investigation a fair test after observing what happens... They could then measure out the liquids using scales just to make sure that they have different weights! By
Katy Morris
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