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Chemistry, 29.09.2020 22:01 legend101xD

Paragraph 1 discusses some differences between pure substances and mixtures. What one of the following statements is true? The chemical properties of a pure substance are variable

The chemical properties of a pure substance are variable,

The physical properties of a mixture never change.

The physical properties of a mixture never change.,

Mixtures can be separated by physical changes.
Mixtures can be separated by physical changes.

Pure substances can be separated by physical changes.

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