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What does the law of conservation of mass state?a) Mass cannot change during physical changesb) Mass is only found in solidsc) The total mass before a chemical reaction equals the total mass afterd) Mass can be created or destroyedCorrect answer is option 'C'. Can you explain this answer? for Grade 7 2025 is part of Grade 7 preparation. The Question and answers have been prepared according to the Grade 7 exam syllabus. Information about What does the law of conservation of mass state?a) Mass cannot change during physical changesb) Mass is only found in solidsc) The total mass before a chemical reaction equals the total mass afterd) Mass can be created or destroyedCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Grade 7 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What does the law of conservation of mass state?a) Mass cannot change during physical changesb) Mass is only found in solidsc) The total mass before a chemical reaction equals the total mass afterd) Mass can be created or destroyedCorrect answer is option 'C'. Can you explain this answer?.

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