Chemical change can be a hard concept for children to understand. It's much easier to explain a physical change. Water freezes into ice. The ice is still water and can be melted back into liquid water. Tear a piece of paper in half, and you still have the same paper. Both are physical changes. But how do you demonstrate chemical change? The easiest example of a chemical change is burning a piece of paper. The…
Cheryl TaylorApril 11, 2014