Year 5 have continued to look at reversible and irreversible changes in science. During this lesson, the children experimented and observed two reactions both demonstrating a different change in matter. The first reaction we looked at the burning of a candle, wax melting and the carbon dioxide that is released into the air by burning the wick.
The second reaction, the children mixed bicarbonate of soda with vinegar. This resulted in the foaming of the solution creating a new gas due to the chemical reaction. The gas that is formed is called carbonic acid and the children explored the change and how the bicarbonate decomposes to create gas.
