1. Unit I: The Foundations of Chemistry

2. CHEMISTRY
The study of the composition and structure of matter

3. Energy
The ability to cause change or do work (move mass over distance)
Types of energy:
1. Chemical 4. Light
2. Electrical 5. Mechanical
3. Sound 6. Nuclear

4. THE ABILITY TO DO WORK KINETIC POTENTIAL STORED ENERGY
CAN BE
CAN BE
KINETIC
POTENTIAL
CAN BE
CONVERTED
DEFINED AS
DEFINED AS
STORED
ENERGY
ENERGY
OF MOTION
EXAMPLES
EXAMPLES
CAN BE
CONVERTED
FOSSIL FUEL (oil & coal)
GASOLINE
ORANGE JUICE
ELECTRICITY
WATER FALLING
COMBUSTION
FOOTBALL THROWN FROM
PAYTON MANNING

5. Law of Conservation of Energy
Energy can be converted from one form to another, but it cannot be created of destroyed in ordinary chemical or physical changes.

6. Factor Label/ Dimensional Analysis
OUR PRIMARY PROBLEM
SOLVING METHOD
TRUST ME….
YOU’LL GROW TO
LOVE IT

7. What can factor label do for me?
Well….. It won’t get you a date this weekend or improve your game but…
It allows conversions from one unit/dimension to another using known conversion factors.

8. What the heck is a conversion factor??????
Examples:
1Kg = 1000 g can be written as:
1000g or 1Kg

9. 25 seconds equals how many years?

10. Convert 2.75 x 1010 seconds to centuries

11. A car going 85 miles per hour will go how many feet in 12.5 hours?

12. 72 mi
Equals how many inches per
Second?
1 hr

13. How do you get good at this???
Practice!!!!!!

14. Metric System & Factor Label
BASES
Length meter m
Volume liter L
Mass gram g
PREFIXES
kilo K = 103
centi c =
milli m =
micro µ =
nano n =

15. Prefix + base = value base kilometer = 103meter Km = 103meter
Handout – using a metric prefix
Go to overheads – factor label and metric conversions

17. Practice
1. Convert 1.33 Km to m
2. Convert 2.34 Km to nm

18. More practice 3. Convert 3.66 x 10-12 cm to µm
4. Convert 2.05 nm to Km

19. Cubic Conversions Volume is often given in cubic length units
example:(20in x 10in x 4in) = 800in3
To convert from one cubic volume to another
the conversion factors must be cubed.

20. Example 1ft = 12in 1ft3 = (12in)3 = 1728in3 Examples:
Definitely not the same!
DON’T FORGET TO CUBE THE
CONVERSION FACTOR
Examples:
cm3 converts to how many cubic Km3

21. A swimming pool that is 20 ft by 15 ft by ?
x 105 Km3 converts to
miles
A swimming pool that is 20 ft by 15 ft by
8ft is filled with water. What is the volume
in liters? (1cm3 = 1mL) memorize this
conversion factor

22. Density
The density of a material is its mass divided by its volume, or its mass per unit volume
density =
mass
volume