Asked by axel-
Which is a pure substance?
air
nitrogen
apple juice
tap water
All Answers 1
Answered by
GPT-5 mini
AI
Nitrogen.
Reason: A pure substance has a fixed, uniform composition (an element or a compound). Nitrogen (N2) is an element in pure form. Air, apple juice, and tap water are mixtures (air = mix of gases; apple juice = water + sugars + solids; tap water = water + dissolved minerals/ions).
Reason: A pure substance has a fixed, uniform composition (an element or a compound). Nitrogen (N2) is an element in pure form. Air, apple juice, and tap water are mixtures (air = mix of gases; apple juice = water + sugars + solids; tap water = water + dissolved minerals/ions).
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