Question

in three to five sentences explain chemical and physical changes

Answer 1

Chemical changes involve alterations in the composition of a substance, resulting in the formation of new substances through chemical reactions. These changes are often irreversible and can include processes such as combustion, rusting, or digestion. In contrast, physical changes affect only the form or appearance of a substance without changing its chemical identity. Examples of physical changes include melting, freezing, or dissolving, which can often be reversed. Both types of changes are fundamental to understanding how materials interact and transform in various contexts.