This document contains instructions and information for a chemistry class. It lists assignments that are due, including balancing equations and acids and bases work. It also provides definitions for vocabulary words and steps for balancing chemical equations. Balancing equations involves making an inventory of elements and adding coefficients to make the elements equal on both sides of the equation. The document ends by assigning homework to balance 11 equations by Monday and informs students that final exams will start on Tuesday.

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
5. Balancing Equations - 3 pages
5sides (Bookshelf- Please Staple in
the correct order)

2. Located on-line
1. Signed Grade Print out after Monday
1/13/14- 25pts.
2. Binder Check #4- 210 points
3. ½ page of notes – front side only,
done by hand
4. Please Check Your Grades for
accuracy and any missing work.

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
Catalysts
Starts and/or Speeds Up
Chemical Reactions
Inhibitors
Stops and/or Slows Down
Chemical Reactions

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

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

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

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

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

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

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

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

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 +
Element
Before
After
Sodium
1
2
Oxygen
5
5
Hydrogen
3
2
Sulfur
1
1
H2O

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.
2
NaOH + H2SO4
Element
Na
Na2SO4 +
Before
After
2
O
1 2
5 6
H
3 4
2
S
1
1
5
H2O

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.
2
NaOH + H2SO4
Na2SO4 +
Element
Before
After
Na
2
2
O
6
5
H
4
2
S
1
1
H2O

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.
2
NaOH + H2SO4
Na2SO4 +
Element
Before
After
Na
2
2
O
6
5
6
H
4
2
4
S
1
1
2
H2O

21. •You have 11 problems to balance…
Due by the end of the period on
Monday
•Do TWO and get them checked before
you complete them all.
•Ask questions when you don’t
understand
•Last Page is Bohr Model and Lewis
Dot Review.

22. HOMEWORK:
1. Balancing Equations – Due by the
end of the period on Monday
2. Target Concepts and Table of
Contents – on-line
3. Final Exams start Tuesday.
4. Check your updated grades for
accuracy or missing assignments.