the basics balancing equations. the reaction burning methane or any hydrocarbon gives water and...

The BasicsThe Basics

Balancing EquationsBalancing Equations

The ReactionThe ReactionBurning METHANE or any hydrocarbon

gives WATER and CARBON DIOXIDEBurning METHANE or any hydrocarbon

gives WATER and CARBON DIOXIDE

The EquationThe Equation

MethaneMethane WaterWater

Carbon DioxideCarbon Dioxide

from burning in airfrom burning in air

CH4CH4 + O2+ O2 H2OH2O + CO2+ CO2

The ReactionThe Reaction

CH4CH4 + O2+ O2 H2OH2O + CO2+ CO2

CC

HH

HH

HH

HH OO OO

Our Methane molecule

Our Methane molecule Our Oxygen

moleculeOur Oxygen

molecule

The ReactionThe Reaction

CC

HH

HH

HH

HH OO OO

We need ENERGY to get this reaction goingWe need ENERGY to get this reaction going

The ReactionThe Reaction

The ENERGY needs to be enough to break the bondsThe ENERGY needs to be enough to break the bonds

CC

HH

HH

HH

HH OO OO

The ReactionThe Reaction

The ENERGY needs to be enough to break the bondsThe ENERGY needs to be enough to break the bonds

CC

HH

HH

HH

HH OO OO

The ReactionThe Reaction

The ENERGY needs to be enough to break the bondsThe ENERGY needs to be enough to break the bonds

CC

HH

HH

HH

HH OO OO

The ReactionThe Reaction

CC

HH

HH

HH

HH OO OO

Now all the atoms are free to moveNow all the atoms are free to move

The ReactionThe Reaction

CCHH

HH

HH

HH

OO

OO

Now all the atoms are free to moveNow all the atoms are free to move

The ReactionThe Reaction

CCHH

HH

OO

OO

Now all the atoms are free to moveNow all the atoms are free to move

HH

HH

The ReactionThe Reaction

CCHH

HH

OO

Now all the atoms are free to moveNow all the atoms are free to move and reactand react

OOHH

HH

The ReactionThe Reaction

CCHH

HH

OO

Now all the atoms are free to moveNow all the atoms are free to move and reactand react

OOHH

HH

A water moleculeA water molecule

The ReactionThe Reaction

CCHH

HH

OO

Now all the atoms are free to moveNow all the atoms are free to move and reactand react

OOHH

HH

Another water molecule

Another water molecule

But what about?But what about?

The ReactionThe Reaction

CCHH

HH

OO

OOHH

HH

Let’s move these 2 water molecules to one side firstLet’s move these 2 water molecules to one side first

The ReactionThe Reaction

CCHH

HH

OO

OOHH

HH

Well, there’s plenty of O2 in the air

Well, there’s plenty of O2 in the air OO OO

OO OOOO OO

OO OO

As there is ALL the timeAs there is ALL the time

The ReactionThe Reaction

CCHH

HH

OO

OOHH

HH

The initial energy broke a few more

bonds

The initial energy broke a few more

bondsOO OO

OO OOOO OO

OO OO

As there is ALL the timeAs there is ALL the time

CCHH

HH

OO

OOHH

HH

OO

OO

The ReactionThe Reaction

These atoms are free to move as wellThese atoms are free to move as well

CC

HH

HH

OO

OOHH

HH

OO

OO

The ReactionThe Reaction

These atoms are free to move as wellThese atoms are free to move as well

CC

HH

HH

OO

OOHH

HH

OO

OO

The ReactionThe Reaction

and make new bondsand make new bonds

CC

HH

HH

OO

OOHH

HH

OO

OO

The ReactionThe Reaction

and make new bondsand make new bonds

One CO2 moleculeOne CO2 molecule

The EquationThe EquationWhat we usedREACTANTSWhat we usedREACTANTS

CC

HH

HH

HH

HH

One Methane molecule

One Methane molecule

andand

Two Oxygen molecules

Two Oxygen molecules

OO OO

OO OO

CH4CH4 O2O2++ 22

The EquationThe EquationWhat we madePRODUCTS

What we madePRODUCTS

andand

One Carbon Dioxide molecule

One Carbon Dioxide molecule

CCOO

OO

Two Water moleculesTwo Water molecules

HH

HH

OO

OOHH

HH

CO2CO2 H2OH2O++ 22

CH4CH4 O2O2++ CO2CO2 H2OH2O++

The EquationThe Equation

CH4CH4 O2O2++ CO2CO2 H2OH2O++

The EquationThe Equation

22 22

BalancedBalanced