Separation and Identification (Science Experiments)
Separating by size
What is it?
Identifying a Mixture: How can determining basic properties of a substance allow you to identify the substances in a mixture?
Most natural and manufactured materials are mixturesA combination of two or more substances that are not chemically combined with each other and that can exist in any proportion., not pure substances. In a mixture, each of the substances has its own chemical properties. Salt water, gravel, and cookies are a few examples of mixtures. People can use physical means to separate mixtures into their component parts. Separating mixtures is important because it allows people to identify the substances that make up the mixture.
Separating the components in a substance is usually one of the first steps in identifying its components. All mixtures can be separated and identified by the distinguishing chemical or physical properties of the components. The separation technique chosen depends on the type of mixture and its characteristics. After a mixture is separated, one or all of its components can be identified. Researchers can match the properties of the unknown...
(The entire section is 4706 words.)
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