1. You Will Need:
1. Acids and Bases – Parts 1 & 2 – 4
pages 6 sides – Due NOW
2. Pencil, Periodic Table (pgs. 196-197)
4. Colored Pencils, Highlighters or
Markers
5. Balancing Equations - 2 pages 4
sides (Bookshelf- Please Staple in the
correct order)

2. 1. Cumulative STAR cards test
Tomorrow on 1-101
2. Pick up Atomic Structure Supplies
by tomorrow
3. OFFICIAL STAR TESTING is on
THURSDAY and FRIDAY of this
week. Please bring something to do
after you have finished the test.

3. Balancing a chemical equations is
much like the work of an
accountant who has to show
where every penny has come
from and where it has gone to.

4. Vocabulary
Word
Definition
Inhibitors
Catalysts Starts and/or Speeds Up
Chemical Reactions
Stops and/or Slows Down
Chemical Reactions

5. Conservation
of Mass
Reactants
Products
Coefficient
Mass (particles) can neither be created
or destroyed in any chemical reaction
Word Definition

6. 2 NaOH + H2SO4 Na2SO4 + 2 H2O
Conservation of Mass = the same number
of atoms of each element on each side of
the equation.

7. Conservation
of Mass
Reactants
Products
Coefficient
Mass can neither be created or
destroyed in any chemical reaction.
Substances going into the reaction.
Word Definition

8. Reactants = the substances going into a
reaction
2 NaOH + H2SO4 Na2SO4 + 2 H2O

9. Conservation
of Mass
Reactants
Products
Coefficient
Mass can neither be created or
destroyed in any chemical reaction.
Substances going into the reaction.
Substances produced by the
reaction
Word Definition

10. Products = the substances being
produced by the reaction
2 NaOH + H2SO4 Na2SO4 + 2 H2O

11. Conservation
of Mass
Reactants
Products
Coefficient
Mass can neither be created or
destroyed in any chemical reaction.
Substances going into the reaction.
Substances produced by the
reaction
The number in front of the formula
indicating how many molecules
Word Definition

12. Coefficient = The number in front of each
formula or element indicating how many
molecules
2 NaOH + H2SO4 Na2SO4 + 2 H2O

13. The Law of Conservation of Mass states
that mass is neither created or destroyed
in any chemical reaction.
Therefore balancing of equations
requires the same number of atoms on
both sides of a chemical reaction.

14. 1. Get Yourself an unbalanced equation.
NaOH + H2SO4 Na2SO4 + H2O

15. 1. Get Yourself an unbalanced equation.
2. Draw boxes around all the chemical
formulas.
NaOH + H2SO4 Na2SO4 + H2O

16. 3. Make an element inventory.
Element Before After
Na=Sodium 1 2
O= Oxygen 5 5
H= Hydrogen 3 2
S= Sulfur 1 1
NaOH + H2SO4 Na2SO4 + H2O

17. 4. Write the numbers in front of each of the boxes until
the inventory for each element is the same both
before and after the reaction.
NaOH + H2SO4 Na2SO4 + H2O
Element Before After
Sodium 1 2
Oxygen 5 5
Hydrogen 3 2
Sulfur 1 1

18. 4. Write the numbers in front of each of the boxes until
the inventory for each element is the same both
before and after the reaction.
NaOH + H2SO4 Na2SO4 + H2O
Element Before After
Na 1 2
O 5 5
H 3 2
S 1 1
2
2
6
4

19. 4. Write the numbers in front of each of the boxes until
the inventory for each element is the same both
before and after the reaction.
NaOH + H2SO4 Na2SO4 + H2O
Element Before After
Na 2 2
O 6 5
H 4 2
S 1 1
2

20. 4. Write the numbers in front of each of the boxes until
the inventory for each element is the same both
before and after the reaction.
NaOH + H2SO4 Na2SO4 + H2O
Element Before After
Na 2 2
O 6 5
H 4 2
S 1 1
2 2
6
4

21. •You have 11 problems to balance…
Due by the end of the period on
Monday
•Ask questions when you don’t
understand

22. HOMEWORK:
1. Balancing Equations – Due by Friday
2. Cumulative STAR CARDS Test
Tomorrow on all cards
3. OFFICIAL STAR TESTING is Thur &
Fri..
4. Pick up Atomic Structure Supplies
from middle table by tomorrow.