Rosary Catholic Primary School

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Science in Snowy Owls: Testing Solubility

Our science lesson involved an exciting solubility experiment where we tested how well different solids dissolved in water. We used five different substances: salt, sugar, ground pepper, coffee, and sand. To ensure a fair test, we carefully controlled key variables: we used the same volume of water for each test, kept the water temperature consistent, and used a measuring timer to ensure each mixture was stirred for the exact same duration. We observed that salt and sugar were highly soluble, dissolving completely to form clear solutions. Coffee was also soluble, leaving a dark liquid. However, ground pepper and sand were insoluble; they remained visible and settled at the bottom of the beaker. Our conclusions showed that solubility is a property that varies greatly between different materials, even when all other experimental conditions are kept the same.

Science in Snowy Owls: Testing Solubility