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Description

Find out how different drinks affect your teeth using this eggcellent eggsperiment.

Resources

You will need
5-8 clean jam jars
5-8 eggs
A selection of fizzy drinks
Vinegar
Coffee
Toothpaste
Water

Instructions

Egg-cellent preparation
Get some clean jam jars with lids, and the same number of eggs
Prepare all of the different liquids. You’ll need water, vinegar, coffee and a selection of fizzy drinks. Try to get a mixture of different colours to make the experiment more interesting. You could even try some ‘diet’ or ‘light’ soft drinks to see if they affect the eggs differently
Prepare the coffee without any milk, and allow it to cool down.
Talk about teeth
The person leading the activity should explain that the experiment will show the effects of certain drinks on our teeth, but because we can’t use real teeth, we’re using eggs.
This is because drinks affect egg shells similarly to how our they affect our teeth
The person leading the activity can ask everyone how they take care of their teeth. How often do they brush? How long do they brush for? Do they floss? Do they use mouthwash? Do they use straws when drinking acidic drinks?
Egg-citing experiment
This experiment should be done over two meetings to allow the liquids to interact with the eggs
The clean, empty jam jars should be half-filled with each of the liquids. You should do three jars with coffee in – two regular and one with some sugar in.
Cover one egg in toothpaste. This one will go in one of the regular coffee jars to see whether toothpaste changes how the coffee affects the egg.
Place an egg in each of the jars and screw the lid on. Be sure to label what is in each of the jars.
Leave the eggs in the liquids for a week until your next meet to give the liquids a chance to affect the eggs.

Tags

• eggs
• human body
• science
• science experiment

Badge Links

• Scientist - Other
• Skills - Activity