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Quantitative Chemistry: Conservation of Mass
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Total cards: 2•Content version: v4•Public deck•Updated: 8/1/2026
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#1
Front (Question)
What is the law of conservation of mass?
Back (Answer)
No atoms are lost of made during a chemical reaction so the mass of the products equals the mass of the reactants.
#2
Front (Question)
The following reaction occurs in a test tube under a Bunsen Burner: 4MgO(s) + CH4(g) → 4Mg(s) + 2H2O(g) +CO2(g) The mass of the products is less than the mass of the reactants. Explain why.
Back (Answer)
The products are gases so escaped