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What can be concluded from the law of conservation of mass regarding chemical reactions?a) The total mass can change freelyb) Chemical reactions create massc) Mass can disappear during reactionsd) Mass remains constant before and after reactionsCorrect answer is option 'D'. Can you explain this answer? for Grade 7 2026 is part of Grade 7 preparation. The Question and answers have been prepared according to the Grade 7 exam syllabus. Information about What can be concluded from the law of conservation of mass regarding chemical reactions?a) The total mass can change freelyb) Chemical reactions create massc) Mass can disappear during reactionsd) Mass remains constant before and after reactionsCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Grade 7 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What can be concluded from the law of conservation of mass regarding chemical reactions?a) The total mass can change freelyb) Chemical reactions create massc) Mass can disappear during reactionsd) Mass remains constant before and after reactionsCorrect answer is option 'D'. Can you explain this answer?.

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