2 | Homogeneous and Heterogeneous Mixtures

Homogeneous and Heterogeneous Mixtures

  • Mixtures can be divided into two types based on their composition. These are homogeneous mixtures and heterogeneous mixtures.


Homogeneous Mixtures

  • Homogeneous mixtures have a uniform composition.
  • This means that regardless of where a sample is taken from, the sample would contain the same blend of components.
  • Examples of homogeneous mixtures include mouthwash, paint and stainless steel.


 mouthwash homogeneous mixture  paint homogeneous mixture  stainless steel homogeneous mixture

Mouthwash, paint and stainless steel are homogeneous mixtures.

(Images: Erschaffung, Wikimedia Commons; ulleo, Pixabay; RonPorter, Pixabay)


Heterogeneous Mixtures

  • Heterogeneous mixtures have a non-uniform composition.
  • This means that if samples were taken from different places within the mixture, the blend of components would not be the same.
  • Examples of heterogeneous mixtures include mud and a bowl of cereal.


 cereal heterogeneous mixture  mud heterogeneous mixture  concrete heterogeneous mixture

Breakfast cereals, mud and concrete are heterogeneous mixtures.

(Images: ImagesBG, Pixabay; skeeze, Pixabay; US Navy, Wikimedia Commons)



  • A phase is a part of a mixture that has a uniform composition.
  • Since homogeneous mixtures have a uniform composition throughout, they have only one phase.
  • Since heterogeneous mixtures do not have a uniform composition throughout, they have more than one phase.
  • For example, an oil-water mixture has an oil phase and a water phase.

oil water mixture separate phases

Oil and water form separate phases within a mixture.

(Image: the3cats, Pixabay)