Physical Change: Does Mowing a Lawn Count?

Explanation:

Physical changes are changes in the form or appearance of a substance without changing its chemical composition. Mowing a lawn changes the appearance of the grass by cutting it shorter, but it does not change the chemical composition of the grass. The grass is still made up of the same elements and molecules after it is mowed as it was before it was mowed.

Chemical changes, on the other hand, are changes in the chemical composition of a substance. For example, burning wood is a chemical change because the wood reacts with oxygen to form new compounds, such as carbon dioxide and water.