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A pure substance is any substance with a definite chemical composition and cannot be broken down through ________ separation techniques.

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ayeitzjayla

Answer:

various

Explanation:

A pure substance cannot be separated into 2 or more substances by physical means such as crystallization or distillation nor by mechanical means such as sifting, filtering, or using a magnet. ... Water (H2O) (4) is a pure substance because it can NOT be separated into simpler substances by physical or mechanical means

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