Dry Tongue

This bud's for you

To Do and Notice

Dry your tongue using a paper towel.

Put a sugar cube onto your dry tongue.

Does it taste sweet. Wait a while. What happens?

What's Going On?

It takes a long time before you can taste the sweetness of the sugar because your taste buds detect molecules in solution. Without water on your tongue the sugar molecules do not dissolve and so cannot be detected by your taste buds.

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Scientific Explorations with Paul Doherty

© 2000

1 Feb 2000