Homogeneous and Heterogeneous Mixtures
- Mixtures can be divided into two types based on their composition. These are homogeneous mixtures and heterogeneous 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, paint and stainless steel are homogeneous mixtures.
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- 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.
Breakfast cereals, mud and concrete are heterogeneous mixtures.
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- 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 and water form separate phases within a mixture.
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