1. Quiz, Sept 21: Identify the following as physical or chemical changes:
melting wax
iron rusting
sanding copper to a shine
hydrogen peroxide decomposing
Answer the following questions:
Which branch of chemistry is concerned with hydrocarbons?
Which branch of chemistry is concerned with the properties, changes, and mathematical relationships between energy and matter?
Why should you have oxygen in your Bunsen burner flame?
How is matter defined?
How is energy defined?
Which Branch of chemistry is concerned with identifying unknown compounds?
physical change
chemical change
Organic Chemistry
Physical Chemistry
Otherwise, there is too much soot in the flame and it wavers dangerously. Oxygen makes a hotter flame.
Matter is anything with inertia or anything with mass and volume
Energy is the ABILITY to do work.
Analytical Chemistry
-1 = = 16

2. Today Make sure all of the parts of the lab are complete:
A summary of the introduction
Pre-lab questions are answered
Procedures are clearly written
Data Table is ready to be filled in.
You are beginning to answer Post-lab questions.
Homework: You should have turned in HW 1 4 , You should turn in homework 5. (Extra Credit if turned in by Monday)
Today is the Last Day I will accept Lab 3

3. Homework Homework #5: Do #6-9 page 62 Lab # 5 page 29 in lab manual.
Homework #6: Re-read pages 63-68; Do # 10 a  e; page 64; #11  18 page 69;
Due 9/20
Due 9/28
Due by Thursday
Homework #7: Do # 28  36 page 72 (evens only) Due Friday
TEST MONDAY
Homework #5: Do #6-9 page 62
Lab # 5 page 29 in lab manual.
Homework #6: Re-read pages 63-68; Do # 10 a  e; page 64; #11  18 page 69

4.  Study For Test X Safety Branches of Chemistry
Organic= hydrocarbons
Inorganic= other compounds
Biochemistry = Biological Compounds
Analytical = ID
Physical = interrelationships & math
Study For Test
Physical: melts, boils, condenses, crystallizes,…
Chemical: reacts w/, oxidizes, decomposes,…
Color, Mass, Volume, Density = phys. prop.
Reacts w/, stability = chem.
Safety
Branches of Chemistry
Physical and Chemical Properties
Physical and Chemical Changes
Energy
Basic Problem Solving (converting Joules, Calories, calories)
4.184 J = 1 cal
1000 cal = 1 Cal
1Cal = 1 kcal X 

5. Homework 5

6. 6. Classify the following as extensive or intensive
mass
color
ductility
length
melting point
extensive
intensive

7. 7. Classify each as chemical or physical
chemical (physical if from machine washing)
chemical
physical
fading of dye in cloth
growth of a plant
melting of ice
digestion of food
formation of clouds in the air
healing a wound
making rock candy by evaporation
light from an electric light.

8. 8. Classify the following as physical or chemical properties.
color
reactivity
flammability
odor
porosity
stability
ductility
solubility
thermal expansion
melting point
catches fire in air.

9. 9. Helium doesn’t react, does it have “no chemical properties”
No, it has the chemical property of being un-reactive, non-flammable, and stable,…

10. multiply the numerator!
How to do Conversions
Always
multiply the numerator!
This is given in
the problem
This is your
conversion factor
Always
Divide the
Denominator

11. How to do Conversions to go from calories to Calories.
Always
multiply the numerator!
180 calories
1 Calorie
1000 calories
Always
Divide the
Denominator
180 cal x 1 Cal.
1000 cal.
= 0.18 calories

12. Remember,
You can have as many conversion factors in a row as you want!
But, you always MULTIPLY THE NUMERATOR AND
you always DIVIDE THE DENOMINATOR X 

13. States of Matter
Gases expand to fill the container (the atoms stay the
same size)
Liquids have definite volume
but not definite shape.
Solids have define volume and definite shape