Liquid to Solid: Freezing — Reading Comprehension

The process of changing from a liquid to a solid is called freezing. When a liquid freezes, it becomes a solid because its particles slow down and come closer together. This happens when the temperature drops low enough for the liquid to reach its freezing point. At this temperature, the liquid cannot stay in its liquid form and turns into a solid.

One of the most common examples of freezing is when water turns into ice. The freezing point of water is 0 degrees Celsius (32 degrees Fahrenheit). If you put water in a freezer, the cold temperature causes the water particles, called molecules, to move more slowly. As they slow down, they lock together in a regular pattern to form solid ice cubes.

Freezing is not just important for water. Other liquids freeze, too. For example, melted chocolate freezes into solid chocolate bars, and juice can freeze to become popsicles. The freezing point can be different for every liquid. Saltwater, for example, freezes at a lower temperature than pure water because the salt changes how the molecules stick together.

Freezing is used in many ways in our daily lives. We freeze food to keep it fresh for longer. In winter, lakes and ponds can freeze, making them safe for activities like ice skating. Understanding freezing helps scientists and engineers design things like freezers, ice packs, and even winter clothing to keep us warm.

Interesting Fact: Some animals, like certain frogs, can survive being frozen in winter and thaw out alive in spring!

What is freezing?

What is the freezing point of water?

What do molecules do when freezing?

Why does saltwater freeze at a lower temperature?

What happens if you freeze juice?

How does freezing help keep food fresh?

Freezing is a phase change. (true/false)

What is a molecule?