What kind of charge occurs with no new substance being formed?

The type of charge that occurs without the formation of a new substance is known as a physical change. This can involve changes in state, such as melting, freezing, or dissolving, where the chemical composition of the substance remains the same. An example is the dissolving of salt in water, where the salt (sodium chloride) remains unchanged at the molecular level. In these cases, the properties may alter, but the original materials are not transformed into new substances.