Question

Is the burning of a candle a reversible or irreversible change?

Answer 1

Reversible and irreversible changes:

1. Reversible alterations are any changes that can be undone or are temporary conversions. Melting and boiling of water, wax melting, and ice freezing are some examples.
2. A reversible change changes physical appearance and is simple to reverse. It has the ability to change the condition of a substance, whether it be solid, liquid, or gas.
3. Also, it has no effect on the amount of matter in a substance. A reversible change does not result in the formation of new substances.
4. Irreversible changes are considered permanent changes. Reactants combine to generate a whole new compound that can not be undone.
5. Irreversible modifications are caused by procedures including heating, burning, combining, and powdering. For example, burning a candle or a piece of paper.
6. An irreversible change alters the chemical appearance, and it is difficult to reverse the process.
7. An irreversible change also results in the creation of new compounds.
8. Chemical reactions occur between the wax and oxygen when a candle is burned. Heat and light are produced as a result of these chemical processes.
9. It is impossible to undo these chemical processes.

Therefore, the burning of a candle is an irreversible change.