WAEC Chemistry 2018 Objective — Question 40
Question 40 of 50 from the West African Examinations Council (WAEC) Chemistry 2018 Objective paper, with the correct answer and a full explanation.
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The law of definite proportions states that
- A. pure samples of the same compound contains the same elements combined in the same portion by massCorrect
- B. pure samples of substances are in the same proportion
- C. chemical compounds are pure because they contain elements
- D. matter can neither be created nor destroyed
Explanation
The law of definite proportions (constant composition) states that a pure compound always contains the same elements combined in the same fixed proportion by mass.
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