Law of Conservation Of Mass Flashcards
1
Q
The law of conservation of mass states that:
A
Mass is neither created nor destroyed in a chemical reaction.
2
Q
Which equation illustrates the law of conservation of mass?
a. 2H2 + 02 → 2H20
b. H2 + C12 → HCl
c. CH4 + 02 → CO2 + 2H20
A
a. 2H2 + 02 → 2H20
3
Q
Why is the law of conservation of mass important in chemical equations?
A
It ensures that the number of atoms of each element is equal on both sides of the equation.
4
Q
Explain why mass appears to decrease during combustion.
A
Mass doesn’t decrease; the gases produced (e.g., CO2, water vapor) escape into the air, making it seem like mass is lost.
