WorksheetsBalancing Equations Quiz
Total questions: 10
Worksheet time: 9mins
A _________ __________ tells a story of a chemical reaction.
(a)
_________ are the starting substances in the reaction while _________ are the substances formed.
(a)
The large numbers in front of some of the formulas are called (a) .
These numbers are used to ________ the equation because chemical reactions must obey the Law of ________ of Matter.
(a)
The number of atoms of each element on both sides of the equation must be _______ because matter cannot be _______ or _________.
(a)
When balancing equations, the only numbers that can be changed are (a) .
Remember that (a) must never be changed in order to balance an equation.
C3H8 + O2 --> CO2 + H2O
C3H8 + O2 --> CO2 + H2O
C3H8 + 5 O2 --> 3 CO2 + 4 H2O
C3H8 + 2 O2 --> 3 CO2 +4 H2O
none of the above
Al + O2 --> Al2O3
Al + O2 --> Al2O3
2 Al + O2 --> Al2O3
4 Al + 3 O2 --> 2 Al2O3
none of the above
Al(NO3)3 + NaOH --> Al(OH)3 + NaNO3
Al(NO3)3 + 3 NaOH --> Al(OH)3 + 3 NaNO3
Al(NO3)3 + NaOH --> Al(OH)3 + NaNO3
2 Al(NO3)3 + 6 NaOH --> 2 Al(OH)3 + 6 NaNO3
none of the above
