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Comprehensive Study Notes — Atoms, Elements, Molecules & Compounds Practice Quiz
Test your knowledge of Comprehensive Study Notes — Atoms, Elements, Molecules & Compounds with 19 practice questions. Get instant feedback and detailed explanations to identify gaps and improve your understanding.
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Which statement best describes the Law of Constant Composition?
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Correct answer: All samples of a pure substance contain the same elements in the same percent composition
The Law of Constant Composition states that all pure substances have constant composition: all samples contain the same elements in the same percentages (ratios). For example, water is always $H_2O$ (a 2:1 H:O ratio).
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