When an atom loses a electron it becomes a positive ion.
Answer:
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Explanation:
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Your answer for this would be A. Mixtures cannot be separated by physical meansA pure substance is heterogeneous.
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Iodine (iodine-potassium iodide) staining distinguishes starch ( a polysaccharide) from monosaccharides, a disaccharides and other polysaccharides. Therefore, a bluish black color is a positive test for starch, and a yellow-ish brown color ( no color change) is a negative test for starch.
