Slide 1 of 37 © Copyright Pearson Prentice Hall Describing Chemical Reactions > Writing Chemical Equations Word Equations To write a word equation, write.

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 5 of 37

© Copyright Pearson Prentice Hall

Slide 6 of 37

Practice Problems for Conceptual Problem 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

© Copyright Pearson Prentice Hall

Slide 9 of 37

© Copyright Pearson Prentice Hall

Slide 10 of 37

Practice Problems for Conceptual Problem 11.2

© Copyright Pearson Prentice Hall

Slide 11 of 37

© Copyright Pearson Prentice Hall

Slide 12 of 37

Practice Problems for Conceptual Problem 11.2