Put an egg in a glass of water and it will go towards the bottom. But you can make an egg float right up at the surface and surprise a friend - with a bit of kitchen magic.


Sink or Swim Egg


You'll need: two glasses that are the same, about 1/4 cup (50 mL) salt, an uncooked egg.

1. Fill two glasses with water. Stir the salt into one glass until it is all dissolved. Hide this glass nearby.

2. Ask a friend to put an uncooked egg into the glass of plain water.

3. Now tell your friend to close his or her eyes and repeat the command "float" ten times. This should give you enough time to switch glasses and put the egg in the saltwater.

How the trick works: When you add salt to the water you make it heavier, or more dense, than the egg. So the egg floats. With a bit of experimenting, you can add just enough salt to make the egg float halfway in the glass.