A substance can be defined as homogeneous if it contains only one kind of compound or one element. Homogeneous is Latin for "the same kind".

An example of a homogeneous substance would be pure silicon, which contains only silicon atoms. Other examples are pure water, which contains only the compound H2O, or pure table salt, which contains only the compound NaCl.

Definition of Homogeneous Catalyst: A catalyst that exists in the same phase as the reactants - usually liquid phase reactions, sometimes gas phase.

Definition of Homogeneous Equilibrium: A reaction equilibrium in which the reactants and products are all in the same phase.

Definition of Homogeneous Mixture: A mixture which has uniform composition and properties throughout. For example, air is a homogeneous mixture of gases. A teaspoonful of table salt stirred into a glass of water also makes a homogeneous mixture. BUT, although a teaspoonful of sand in water will form a mixture, it won't be a homogeneous mixture. (It will be heterogeneous.)

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