1. Both are made up of matter. This means they occupy space and have mass.
2. Both can be physically separated. This doesn't mean they are always easily separated, but it's possible to use physical methods like filtration, distillation, or magnetism to separate components of both mixtures and substances.
Key Differences:
* Composition: Mixtures have variable composition, meaning the proportions of their components can change. Substances have a fixed and definite composition.
* Properties: Mixtures retain the properties of their individual components. Substances have unique properties that are different from their constituent elements.
* Separation: Mixtures can be separated by physical means. Substances can only be separated by chemical means.
Example:
* Mixture: Salt water. You can easily separate the salt from the water by boiling the water, leaving the salt behind.
* Substance: Water (H2O). Water is always made up of two hydrogen atoms and one oxygen atom. You can't separate these components using physical methods. You'd need a chemical reaction to break down water into its elements.
