Yesterday Primary 4 conducted an experiment to find out what materials are soluble and which are not. Soluble means they will dissolve and disappear into the water. We made a prediction first and then completed the experiment.

Maria-Victoria – soluble things vanish in the water when they are added to it. Salt is soluble.

Karolina – I learned that chalk is insoluble.

Callum – I predicted that sand was insoluble because I know at the beach the sand doesn’t disappear. I was correct.

Piotr – I learned that sugar is soluble.

Ieuan – I learned bicarbonate of soda bubbles and fizzes when you add it to water.

Ethan – instant coffee is soluble and I knew it would be as my mum drinks it at home and it disappears.

Fraser – when you add flour to the water it turned lumpy and looks like slimy cheese. It was insoluble.