What are 4 differences between mixtures and compounds?

Mixtures are combinations of two or more substances that retain their individual properties and can be separated by physical means, while compounds are substances formed when two or more elements chemically bond together, resulting in new properties. Mixtures can vary in composition, whereas compounds have a fixed ratio of elements. Additionally, mixtures may be homogeneous (uniform throughout) or heterogeneous (not uniform), while compounds are always homogeneous. Lastly, the components of a mixture can be separated without chemical reactions, but breaking down a compound requires chemical reactions.