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Science – Matter

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Properties of a solid.

This week we investigated how matter can change state. Water can be a solid, liquid or a gas. We investigated how chocolate can change from a solid to a liquid by adding heat.

First we used our senses to observe the properties of the chocolate as a solid. It was brown, solid, smooth and hard. Next we held the piece of chocolate in our hands. After a few minutes, the chocolate was still brown, but it was now runny and slippery and it changed shape. The heat had transferred from our hand to the chocolate and melted it. It was now a liquid.

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Science – Matter

Home / Science – Matter

What is viscosity?

This week we investigated the viscosity of liquids. We discovered that viscosity means how fast or slow a liquid flows. We ran a viscosity race with 4 liquids choosing from BBQ sauce, oil, water, shampoo and syrup. We made sure it was a fair test – the only element we changed was the type of liquid. We predicted which liquid would win the race. Next we carried about the test and observed what happened. We then recorded analysed and evaluated our results.

Water had the lowest viscosity and flowed the fastest. Shampoo and syrup had the highest viscosity and took the longest to flow.

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