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Chapters 4–5: Atoms, Elements, Molecules & Compounds — Study Materials Practice Quiz
Test your knowledge of Chapters 4–5: Atoms, Elements, Molecules & Compounds — Study Materials with 12 practice questions. Get instant feedback and detailed explanations to identify gaps and improve your understanding.
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Question 1 of 120 answered
Which statement best describes the law of constant composition?
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Correct answer: All samples of a pure compound contain elements in the same mass ratio.
The law of constant composition states a pure substance has a fixed elemental composition (e.g., $H_2O$ always has the same H:O ratio).
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