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Ice, Water, Steam
Age 11 · Science
Water can be a solid, a liquid or a gas. Warming it up or cooling it down makes it change from one to another.
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Age 11: open this week
Browse Age 11
In the picture
- Ice cubes in a glass: melting, solid water turning into liquid as it warms
- Bubbles in the pot: boiling, hot liquid water turning into vapour
- Droplets on the cool lid: liquefaction, vapour turning back into liquid on a cold surface
- Ice blocks in the freezer tray: solidification, liquid water turning into solid as it freezes
Examples
- A puddle on the pavement dries up in the sun and the water goes into the air.
- Steam from a hot shower fogs a cold mirror with tiny droplets.
Key takeaways
- Heating water moves it towards gas; cooling moves it towards solid.
- Pure water melts at 0 °C and boils at 100 °C.
Quiz: Ice, Water, Steam (Age 11)
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What is the change called when solid water turns into liquid as it warms?
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What is the change called when hot liquid water turns into vapour?
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According to the card, what state does cooling move water towards?
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