Year 4 Science – Baking Bread

For science this half term in year 4, we have been learning about states of matter  – looking particularly at reversible and irreversible changes. After we had learned about the properties of the different states of matter and looked at examples of them, we looked at the processes involved in reversible changes of the states of matter such as melting ice and freezing water or evaporation and condensation. After this, we looked at irreversible changes such as burning and chemical reactions. To put our theory into practice, we made and baked some bread to investigate if it was a reversible or irreversible change. The results were quite conclusive. Because of a chemical reaction between the ingredients, we discovered that it was an irreversible change. Irrefutable evidence and a fun and tasty way to learn!

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