A snowflake is frozen water. When heat is added, the snowflake melts and changes state to become liquid water.
Water can exist as a solid (ice), liquid (water) or gas (vapour or gas). Adding heat can cause ice (a solid) to melt to form water...
Looking down at the Earth from space, you can get an idea of just how much water there is. In fact, around 71% of the Earth’s...
In this activity, students examine the role of heat as water changes from a solid to a liquid to a gas and back again.
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