National Chemistry Week - Experiments - Water and Sand

THE AIM:

To show that a glass of sand has air in it

WHAT YOU WILL NEED:

• 1 glass
• sand
• water

WHAT TO DO:

1. Fill the glass full of sand.
2. Ask the class if they think that the glass is full, and ask them what they think is inside the glass.
3. Begin to pour water into the glass.
4. Ask the class to observe what is happening.
5. Keep pouring water into the glass as long as there is room for it.

At the start there are sand particles and air in the glass. When water is poured in, bubbles are observed because the air moves out of the water's way.