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What is the water cycle? - BBC Bitesize

WebPlastics are materials made from chemicals and are not found in nature. They are strong and waterproof. They can be made into any shape by applying heat. Plastics are not magnetic. They are good ... WebIn a liquid like water, the particles are randomly arranged. They move freely over each other, a bit like marbles in a bucket. This is why liquids can be poured. In a gas, like helium, particles ... ford spares east rand

What are changes of state? - BBC Bitesize

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