A compound is a substance made up of two or more elements chemically combined in a fixed ratio, meaning the atoms are chemically bonded together. A compound can be broken down into its individual elements through chemical reactions. For example, water (H2O) is a compound made up of two hydrogen atoms and one oxygen atom chemically bonded together.
On the other hand, a mixture is a combination of two or more substances that are not chemically bonded together. Mixtures can be separated into their individual components through physical means, such as filtration or distillation. For example, salt and pepper is a mixture of two different substances, salt and pepper, which can be separated by simply shaking them out.
In short, the main difference between a compound and a mixture is that compounds are chemically bonded together, while mixtures are simply physically combined. The components of a mixture can be separated by physical means, while the components of a compound can only be separated by chemical means.