The Fusion Process: Solid to Liquid

Fusion is a process in which a solid substance changes into a liquid state. It is also known as melting. The transformation occurs when heat is applied to a solid substance, causing the particles within the substance to gain energy and vibrate more rapidly. This increased thermal energy disrupts the orderly arrangement of the particles in the solid, causing them to break free from their fixed positions and move more freely.

Explanation:
When a solid substance is heated, the energy is transferred to its particles. This added energy causes the particles to move faster and with greater freedom. As a result, the forces of attraction between the particles weaken, and the solid begins to lose its rigid structure.

As the temperature continues to rise, the particles gain more energy, and their movement becomes even more vigorous. At a certain temperature, known as the melting point, the particles have enough energy to overcome the intermolecular forces holding them together. This is when the solid starts to transform into a liquid.

Key Points:
- Fusion is the process of a solid substance changing into a liquid state.
- Heat is applied to the solid substance, causing the particles to gain energy.
- The increased thermal energy disrupts the orderly arrangement of particles in the solid.
- The particles break free from their fixed positions and move more freely.
- The forces of attraction between particles weaken as the temperature rises.
- At the melting point, the particles have enough energy to overcome intermolecular forces.
- The solid substance starts to transform into a liquid.

Example:
An example of fusion is when a block of ice is heated. As heat is applied, the temperature of the ice increases. Once the temperature reaches the melting point of ice, which is 0 degrees Celsius or 32 degrees Fahrenheit, the ice starts to melt and transform into liquid water. The solid ice particles gain enough energy to break their fixed positions and move more freely, resulting in the formation of liquid water.

In conclusion, fusion is the process in which a solid substance changes into a liquid state. It occurs when heat is applied to a solid, causing the particles to gain energy and break free from their fixed positions. The melting point is the temperature at which the solid starts to transform into a liquid.

B. is the correct answer and
this process is also known as melting

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