Wednesday, 2 May 2018

Solids, Liquids, Gases...they all matter!

This week in Science, Year 3 have been exploring the different properties of solids, liquids and gases. They were even able to investigate this at a molecular level!

"Solids are different to liquids because they hold their shape and cannot be poured." Sabeer, Sequoia

"Interestingly, even though sand, sugar and salt can be poured, they are all still solids because each individual grain holds its shape!" Kiera, Sequoia

The children also investigated that things can change states of matter. For example, water can freeze into ice and become a solid or it can evaporate into water vapour and become a gas.

"We went outside to show how the molecules are arranged differently in each state of matter. In solids, they are very tightly packed and vibrate, in liquids they move around more freely and in gases they are further apart and move around very quickly." Jessica, Hazel

"It was so much fun when we pretended to be the molecules outside. We started out really close to together, because we were a solid and then we warmed up and became a liquid, until eventually we were freely running around quickly because we had evaporated into a gas!" James, Sequoia

Can you think of an example when matter changes state at home?

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