Aliquid cooled down below a certain temperature becomes a

it becomes a solid because it will freeze

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Explanation:

In a liquid, atoms are less strongly held together as compared to solids. Due to this the atoms are able to slide past each other.

But when liquids are cooled at a certain temperature then their atoms come closer to each other. As a result, they are held by strong forces due to which liquid phase changes into solid phase.

For example, water freezes at zero degree celsius.

Thus, we can conclude that a liquid cooled down below a certain temperature becomes a solid as it freezes.