Question

how is a pure substance different from a mixture? A. mixtures can be separated by physical means B. Pure substances are made up of mixtures C. A pure substance is heterogeneous D. A mixture is made of one substance

Answer 1

well, a pure substance Is something that isn't mixed with anything else. it is it's own thing, and a mixture can be separated by physical means, so it is A.

Answer 2

Mixtures can be separated by physical means is the statement that describes how a pure substance different from a mixture.

A pure substance is a form of matter that has a definite (constant) composition and distinctive properties.

On the other hand, a mixture is a combination of two or more substances in which they retain their properties.

Any mixture can be formed and then separated by physical means into its pure components without changing the identity of those components.

That is, there are different methods to separate a mixture into its different components, these methods are physical since they do not alter the properties of the components.

These physical methods are: Filtration, decantation, distillation among others, and are based on the physical state, characteristics and properties of the components of the mixture, to use the most appropriate technique.

Therefore, we can conclude that mixtures can be separated by physical means is the statement that describes how a pure substance different from a mixture.

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