In daily life, we come across matter in three forms: solid, liquid, and gas. The state of matter partly depends on the temperature of the substance. Liquids like water is the only matter that can exist in all three states of matter.
Room Temperature
At room temperature, water is a liquid.
- Liquids, such as water, oil, and soda, adapt to the shape of their containers. Under a microscope, you’d see that their particles are packed closely together but arranged randomly, with the molecules constantly moving around.
Freezing
When liquid water gets cold enough, it freezes and turns into solid ice. It becomes a solid. Solids, like your desk, your backpack and your pants, are firm and stable. Their molecules are grouped together in organized patterns. The molecules might vibrate slightly, but they don’t move around.
Boiling
When liquid water heats up to a certain point, it transforms into water vapor, a gaseous state.
Gases like air, steam, and helium flow freely, allowing you to pass your hand through them effortlessly. They adapt to the shape of their container and can fill it completely. Their molecules are widely spaced and constantly moving, wiggling and jiggling around. You can see the air, but you can see what happens when air gets trapped into things like a balloon.
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