In this lesson, we will learn about the difference between physical changes and chemical reactions. We will learn about the particles in both of these types of change and the signs to look out for in a chemical reaction. You will need a pencil, a ruler and a piece of paper for this lesson. If you have baking soda and vinegar then you will need that for an investigation too, but don't worry you can still take part without these things.
Click on the link below and follow the prompts, pausing the video as and when you need to.