What materials do you need to make an egg float in salt water?

Answer 1

An egg with an intact shell,

warm water,

a lot of table salt (NaCl),

a suitable container to hold the above.

Pour the (warm) water to the container,

stir while adding salt to the water,

keep adding salt until no more will dissolve

(This is a saturated solution),

allow to cool & gently place egg into the salt water.

Answer 2

To make an egg float in salt water, you will need a raw egg, a container filled with water, and salt. By progressively adding salt to the water and stirring until the egg floats, you can achieve this simple science experiment.