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A of balance

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					A question of balance
This balances
This doesn’t balance
1. Does this balance ?
2. Does this balance ?
3. Does this balance ?
Now check your answers
1.   Does balance
2.   Doesn’t balance
3.   Does balance
This balances


3X
                3X


2X
This doesn’t balance



4X
4. Does this balance ?


    4X                   3X
5. Does this balance ?


  3X
                         2X
6. Does this balance ?



2X                       2X
7. Does this balance ?
8. Does this balance ?



   3X
                     2X
Now check your answers
4.   Doesn’t balance
5.   Does balance
6.   Doesn’t balance
7.   Does balance
8.   Does balance
      That Was Easy!

You must be really bored by now so
  lets make the game a bit more
          complicated
Now You Have To Make Them
         Balance
Here Are The Rules
1.   The shapes can only be grouped together in the
     way they appear on the screen
2.   You can’t take shapes away
3.   To the left of the arrow you can add more of the
     groups of shapes that are on the left of the arrow.
4.   To the right of the arrow you can add more of
     the groups of shapes that are on the right of the
     arrow.
This may seem a little confusing
     so lets try an example
This doesn’t balance
Lets try adding more of the ones
on the left
This still isn’t quite right so we’ll
         have to add more
So we’ll try adding some to the
right
Now It Balances!
 As we are only changing the
number of each group of shapes
  it makes sense just to use a
number to say how many there
             are.
Lets Balance This:



                     2
  4
Now its balanced!



                    2
  4
Does this balance ?
No, so lets balance it



 2                   4
  2
Now its balanced !



2                    4
 2
Copy these and balance them

    2                 2


     3             2


4   3             2
Copy these and balance them

 O2 + 4 Na         2Na2O
 N2 + 3 H 2        2 NH3
3 O2 + 4 Al         2Al2O3
  Congratulations
 If you stuck it out this far
you can balance equations!

				
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posted:10/13/2011
language:English
pages:33