How Does an Ice Cube Melt?
Scientists theory is that all things are made up of particles. The particles act differently depending on what state they are in. For Example this ice cube is a solid. In a solid all the particles are closely compact, however they do vibrate, but they do keep a fixed shape. They do not have enough energy to move for themselves so they stay together in columns or rows usually.
This is a solid ice cube when it has first come out of the freezer. A solid is hard and has a fixed shape.
Liquid particles are touching but further apart than solids. They also don't have a regular shape. They move by sliding past each other. The ice cube which was solid has turned into the liquid water because the air temperature is warmer than the freezers. Which means the ice particles gather heat energy from the warmer air. Therefore the ice particles have enough energy to break apart (melt)into smaller particle arrangements. Which means the particles can move more freely. Also the surface area of a solid is considerably smaller than a liquid because in a solid the particles are more compact than in a liquid; where the particles are more spread out, therefore they take up much more space.
This is liquid water. It is a liquid because the solid ice cube has melted. A liquid takes the shape of its container and is smooth. It can also pour.
This is water in the state of a gas (water vapour). Most gases are invisible. They will take the shape of its container but they will also fill it.
Gas particles hate being around each other. They are randomly arranged and free to move. They also move in all directions. The liquid water has turned into water vapour (gas), because the water has evaporated. Evaporation happens when the liquid gets to its boiling point, for example the boiling point of water is 100 C. When the water gets to 100 C it cannot get any higher so the water evaporates. Which means that the liquid water has enough heat energy to leave its other particles. Therefore the particles break up so small the naked eye cant see them. Now they can move around freely. However now the surface area is huge because the particle arrangement in a liquid were small but now their a gas so the particles are on their own which means they take up more surface area.
By Isaac Chidlow 7C