What principle states that in a closed system, the total mass remains constant, despite physical or chemical changes?
Category: Science · Difficulty: hard
Hint: It’s fundamental to chemical reactions.
Answer
Conservation of mass
Explanation
The conservation of mass states that mass cannot be created or destroyed in a chemical reaction, only transformed.
This is a hard science riddle — a tricky one that takes a little thought. The answer is Conservation of mass.
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