Here's a breakdown of the terms and their corresponding descriptions:
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Pure substance: A material that has a constant composition and properties, consisting of only one type of particle. It can be either an element or a compound.
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Heterogeneous: A mixture in which the components are not uniformly distributed and can often be distinguished from one another. For example, a salad or a mixture of sand and salt.
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Homogeneous: A mixture that has a uniform composition throughout, where the individual components are indistinguishable. An example is saltwater or air.
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Solution: A specific type of homogeneous mixture where one substance (the solute) is dissolved in another (the solvent), such as sugar in water.
You can match them as follows:
- Pure substance: A material that has a constant composition.
- Heterogeneous: Mixture with non-uniform distribution of components.
- Homogeneous: Mixture with uniform composition throughout.
- Solution: A homogeneous mixture where one substance is dissolved in another.