Melting just involves change of state and u can say it physical change.......... Burning involves change in chemical composition and u can say it chemical change......

Introduction:
Wax is a complex mixture of hydrocarbons, typically derived from plants, animals, or petroleum. It has various applications, such as candle making, coating, and as a sealant. When it comes to the physical changes that wax can undergo, two common processes are melting and burning. Although they both involve heat, there are significant differences between the two.

Melting of Wax:
Melting is a physical change that occurs when a solid substance is heated and transforms into its liquid state without undergoing any chemical reactions. When wax is heated, the energy is transferred to its molecules, increasing their kinetic energy. As a result, the intermolecular forces holding the solid wax together are weakened, allowing the molecules to move more freely. This process continues until the melting point of the wax is reached. At this point, the temperature remains constant until all the wax has melted.

Burning of Wax:
Burning, on the other hand, involves a chemical change that occurs when a substance reacts with oxygen in the presence of heat, producing new substances and releasing energy in the form of heat and light. When wax is burned, the heat from a flame or another ignition source breaks down the hydrocarbon molecules in the wax. This produces carbon dioxide and water vapor as byproducts, along with the release of energy in the form of heat and light.

Key Differences:
Melting:
- Melting is a physical change.
- It occurs when wax is heated to its melting point.
- The wax changes from a solid to a liquid state.
- No new substances are formed during melting.
- The process is reversible, and the wax can solidify again upon cooling.

Burning:
- Burning is a chemical change.
- It occurs when wax reacts with oxygen in the presence of heat.
- The wax undergoes combustion and produces new substances.
- Carbon dioxide, water vapor, heat, and light are released during burning.
- The process is irreversible, and the wax cannot return to its original state.

Conclusion:
In summary, the difference between melting and burning of wax lies in the nature of the changes that occur. Melting is a physical change where the wax transitions from a solid to a liquid state, while burning is a chemical change involving the combustion of wax, resulting in the formation of new substances. Understanding these distinctions is essential in various applications, such as candle making or industrial processes where wax is involved.