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Chapter quiz
Chemical Reactions Quiz
Answer each question, submit once, and review explanations for every item.
Question 1
Intermediate
The equation 2H2 + O2 -> 2H2O is balanced.
True or false
true
false
Question 2
Intermediate
When balancing equations, which should be changed?
Answer choices
Subscripts
Element symbols
Coefficients
Atomic numbers
Question 3
Intermediate
What conservation law explains why atoms must balance on both sides of an equation?
Answer choices
Conservation of charge only
Conservation of mass
Conservation of temperature
Conservation of color
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