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20 questions
Balance the following equation:
___ H2+ ___ O2→___ H2O
1, 1, 3
2, 2, 2
1, 2, 1
2,1, 2
Balance the following equation:
___ SeCl6+ ___ O2→___ SeO2+____Cl2
1, 1, 1, 3
2, 1, 2, 1
1, 2, 1, 2
2, 2, 2, 4
Chemical Reaction
a substance formed as a result of a chemical reaction
a change in matter that produces one or more new substances
the process in which substances undergo chemical changes that result in the formation of new substances
a substance that enters into a chemical reaction
Chemical Equation
A representation of a chemical reaction
the starting materials in a chemical reaction
the new substances that are formed in a chemical reaction
tells how many atoms, molecules, or formula units take part in a reaction
Balance this equation
_Al +_HCl --> _H2 +_AlCl3
2,6,3,2
it's already balanced
4,12,3,4
2,1,4,5
The coefficient in 3H2O is
6
5
2
3
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