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Slide 1 of 37
© Copyright Pearson Prentice Hall
Describing Chemical Reactions
> Writing Chemical Equations
Word Equations
To write a word equation, write the names
of the ___________ to the _____ of the
_________ separated by _______
_________; write the names of the
___________ to the _______ of the arrow,
also separated by _________ _________.Reactant + Reactant Product + Product
11.1
Methane + Oxygen Carbon dioxide + Water
Slide 2 of 37
© Copyright Pearson Prentice Hall
Describing Chemical Reactions
> Writing Chemical Equations
Chemical Equations
A ___________ ______________is a
representation of a chemical ___________;
the formulas of the ____________ (on the
_______) are connected by an arrow with the
formulas of the ___________ (on the
________).
11.1
Slide 3 of 37
© Copyright Pearson Prentice Hall
Describing Chemical Reactions
> Writing Chemical Equations
Write the formulas of the
______________ to the ________ of the
_____________ sign (arrow) and the
formulas of the ______________ to the
______________.
11.1
Slide 4 of 37
© Copyright Pearson Prentice Hall
Describing Chemical Reactions
> Writing Chemical Equations
A _____________ equation is a chemical
equation that does ______ indicate the
_________ ____________ of the reactants
and products.
Here is the equation for rusting:
Fe + O2 Fe2O3
11.1
© Copyright Pearson Prentice Hall
Slide 7 of 37
Describing Chemical Reactions
> Balancing Chemical Equations
To write a ____________ chemical
equation, first write the _________
equation. Then use _____________ to
balance the equation so that it obeys the
______ of conservation of ________.
11.1
Slide 8 of 37
© Copyright Pearson Prentice Hall
Describing Chemical Reactions
> Balancing Chemical Equations
A chemical reaction is also described by a
balanced equation in which each side of the
equation has the __________ ___________
_______ _______________ of each
____________ and mass is conserved.
11.1
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