Fusion and freezing are two opposite processes that involve a change in the state of matter. Fusion is the process of combining two or more substances into a single substance, while freezing is the process of changing a liquid into a solid by cooling it.

Fusion

* Fusion is a process that occurs when two or more substances are combined together to form a new substance.

* The new substance has different properties than the original substances.

* Fusion is an exothermic process, which means that it releases heat.

* Examples of fusion include:

* Melting ice

* Dissolving salt in water

* Mixing sugar and water

Freezing

* Freezing is a process that occurs when a liquid is cooled to its freezing point and turns into a solid.

* The freezing point of a liquid is the temperature at which it changes from a liquid to a solid.

* Freezing is an endothermic process, which means that it absorbs heat.

* Examples of freezing include:

* Water turning into ice

* Milk turning into ice cream

* Jell-O turning into a solid

In summary, fusion is the process of combining two or more substances into a single substance, while freezing is the process of changing a liquid into a solid by cooling it. Fusion is an exothermic process, while freezing is an endothermic process.