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CHEMISTRY Test Ch-1 Elements and Compounds 60 minutes Question 1 of 21 Which of the following statements represents the law of conservation of mass? A. B. C. D. Atoms of…

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Atoms of the isotopes of the same element contain the same number of Name : _____________________ ( ) Class :_______ MID-YEAR EXAMINATION 2009 SECONDARY 2 EXPRESS LOWER SECONDARY…