What do all Liquids have in common?

All liquids share a number of things in common, such as:

1. They are without a determined shape.

2. Because of this, they flow easily.

3. When they are frozen, they become a solid.

4. When they are boiled or evaporate, they become a gas.

Take water, for instance, probably the most common liquid you could think of.

Whilst it has a defined surface, which you can tell by looking at the line at which the water ends at the top of a glass, it has no determined shape. It will fill any glass you pour it into, whether it's a round bowl, a tall glass, or a vase, and it flows easily into the area you're pouring it.

When it freezes, it becomes a solid, commonly known as ice. And when it's boiled, it becomes water vapour, which then turns back into liquid water during condensation. The same characteristics are true of all liquids, regardless of which one you're looking at.