1. Answer the following questions. . a a. Which one of the following is not a pure substance? iii. Salt v. Steel i. Air ii. Sugar ? iv. Gold and heterogeneous mixture 119
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Answer:
Heterogeneous mixture is the answer
Explanation:
An heterogeneous mixture is a type from which a impure substance is been made, according to what I know , Pure substances are all homogeneous i.e. their composition is uniform throughout the bulk.
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