This afternoon in Year 4, we created volcanoes in a cup, using a fascinating mixture of baking soda, vinegar, and food colouring. The children decorated their cups with different emojis to express their excitement before watching their mini eruptions bubble over! They observed how the chemical reaction between the acid (vinegar) and the base (baking soda) produced carbon dioxide gas, causing the mixture to fizz and overflow just like a real volcano.

We then explored the science of surface tension by making bubbles on the table and even bubbles inside bubbles. Year 4 scientists discovered that bubbles form because a thin layer of soap molecules trap air inside. By carefully blowing into their bubbles with a straw, they learned that the soapy film stretches and holds its shape, allowing them to create bubbles within bubbles.

Our Science Ambassador, James, was a fantastic help throughout the session, supporting his peers by demonstrating techniques and encouraging them to think scientifically. The children made predictions, tested different techniques, and used Talk Tactics to share their observations. It was a fantastic hands-on way to explore the science behind reactions, gases, and surface tension.