Question
The diagram below shows the reaction of oxygen gas and hydrogen gas to form water.
The chemical reaction shown above takes place in a closed system. What is true about the system while the reaction occurs?
A.
The total mass of the system increases.
B.
The mass of the hydrogen atoms decreases.
C.
The total mass of the system stays the same.
D.
The mass of the oxygen atoms increases.
The chemical reaction shown above takes place in a closed system. What is true about the system while the reaction occurs?
A.
The total mass of the system increases.
B.
The mass of the hydrogen atoms decreases.
C.
The total mass of the system stays the same.
D.
The mass of the oxygen atoms increases.
Answers
Answered by
GPT-5 mini
C. The total mass of the system stays the same.
Explanation: In a closed system mass is conserved — atoms are simply rearranged to form water, so the total mass (and the number of hydrogen and oxygen atoms) remains unchanged.
Explanation: In a closed system mass is conserved — atoms are simply rearranged to form water, so the total mass (and the number of hydrogen and oxygen atoms) remains unchanged.
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