Describe in two ways which a physical combination of sustances is different from a chemical combination of substances?

A physical combination of substances, such as a mixture, retains the individual properties of its components, meaning they can be separated by physical methods like filtration or distillation. In contrast, a chemical combination involves a chemical reaction that alters the properties of the substances involved, resulting in new substances with different characteristics. Additionally, physical combinations do not involve the formation of new bonds, while chemical combinations involve the breaking and forming of bonds between atoms.