Chemical Changes: Reflecting on Examples and Understanding the Basics

What are some examples of changes that are NOT the result of a chemical change?

1. Give an examples of a change that is NOT the result of a chemical change​.

Answer:

The change of state, such as melting ice to water or freezing water to ice, is an example of a change that is NOT the result of a chemical change.

When reflecting on examples of changes that are NOT the result of a chemical change, it is important to consider physical changes. Physical changes are changes in the state or appearance of a substance that do not involve a change in the substance's chemical composition.

For example, when ice melts to water, the chemical composition of the water remains the same as the ice, but the physical state changes from solid to liquid. Similarly, when water freezes back into ice, the chemical composition remains unchanged but the physical state changes from liquid to solid.

Understanding the difference between physical changes and chemical changes is crucial in chemistry. Physical changes involve changes in state, shape, or appearance without altering the chemical composition of a substance, while chemical changes involve the rearrangement of atoms and molecules to form new substances with different chemical compositions.