The children were experimenting with different substances to see if they dissolve in water. Olivia C knows that dissolving means it disappears.

The flour did not dissolve. It sank to the bottom. The water is cloudy.

The sugar dissolved.

The sand sank to the bottom. It did not dissolve. The water is quite clear.

The coffee dissolved and turned the water dark brown.

The paper clip did not dissolve. It sank to the bottom. We could see some oxygen bubbles.

The lego didn’t dissolve. It floated.

The salt dissolved.