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Today you will need:
1. Pencil or Pen
2. 4-Colored Pencils, Highlighters
3. Power Notes –Physical vs.
Chemical Changes (Bookshelf -
2 pgs - 4 sides – Please Staple)
4. Introduction to Density- Due
Now
1) Power Notes – Physical vs.
Chemical – Due on Monday, Oct.
14th
2) Binder Check #2 – Due Thur. Oct.
17th
at the beginning of class
3) Test #2 – Thur. Oct. 17th
- Target
Concepts on-line- ½ page of notes
front side only done by hand
•Basic particles that make up a
substance.
We can identify
substances
according to their
__________ &
___________
properties
Brainstorm – OK to have the same ideas – a
minimum of 2
Why do we have to use
more than just physical
properties to determine
what a substance is?
•required knowledge of more properties.
Physical Properties 1. Characteristics of materials that
can be observed w/out
carrying out a chemical
reaction
2. Usually easy to reverse
3. NO NEW substance created
Examples of Physical
Properties
Color, size, texture, density, freezing pt.
electrical & thermal conductivity, luster,
malleability, ductility, hardness, mass,
solubility
H2O
Ice
water
+
Heat
=
H2O
Liquid water
Chemical Properties 1. Characteristics that cannot be
easily seen
2. Must create a chemical
reaction to observe
3. NEW substance created
4. Difficult to reverse
5. Happens quickly (explosion) or
slowly (rusting).
Examples of Chemical
Change
Flammability, reacting with acid
Oxidation (rusting-reacting
w/oxygen), digesting,
decomposition
2 H2O + =
O2
H2 H2
2 molecules of water
electricity
1 molecules of
diatomic oxygen
2 molecules of diatomic Hydrogen
Different
Substances
Chemical Properties continues…..
Notice that water can be separated into its constituents(parts)
……..2x the amount of hydrogen is collected as compared to
oxygen. (H2O) Why?
On Lined Paper
Signs a Chemical
Reaction may be
occurring:
1. Change in Color
2. Bubbling or Fizzing
3. Precipitant is created
http://www.harpercollege.edu/tm-
ps/chm/100/dgodambe/thedisk/chemrxn/signs.htm
4. Heat is absorbed or released
(endothermic vs. exothermic)
5. Energy is produced
What is the difference
between endothermic
and exothermic?
http://antoine.frostburg.edu/chem/senese/101/therm
o/faq/exothermic-endothermic-examples.shtml
Endothermic – Therm (heat)
Endo (in)
Ex: Cooking and egg, baking
bread, photosynthesis
Exothermic = Therm (heat)
Exo (out)
Ex: Rusting, Explosions, Fireworks
Physical or Chemical? 1. Identify whether the change is
Physical or Chemical
2. Identify the reason as either you
still have the Same substance or
a Different one was created
Event • Identify the event as either
physical or chemical.
• Explain why in bullet format
• Use your notes as reference.
Your Ideas 1) Come up with one chemical
and one physical event – MUST BE
YOUR OWN & DIFFERENT THAN
ANYONE IN YOUR GROUP
Remember: The Law of Conservation of Mass –
Matter cannot be CREATED or
DESTROYED. It can only change
form(physical) or become
rearranged (chemical – a change
in how the atoms are connected)
Review Questions 1-10 • Answers in your notes
• Bullet format
On-line activity
Graded for HONESTY &
PARTICIPATION
Hyperlink on Learning Point under
Daily Assignments for this week.
SELECT: Quia Quiz
How many did you get correct on
your first try? ____/20
Power Notes – Physical vs.
Chemical – Due on Monday
Oct. 14th
at the beginning of
class
Don’t forget to Review and
Reflect

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Power Notes Physical vs. Chemical Day 1

  • 1. Today you will need: 1. Pencil or Pen 2. 4-Colored Pencils, Highlighters 3. Power Notes –Physical vs. Chemical Changes (Bookshelf - 2 pgs - 4 sides – Please Staple) 4. Introduction to Density- Due Now
  • 2. 1) Power Notes – Physical vs. Chemical – Due on Monday, Oct. 14th 2) Binder Check #2 – Due Thur. Oct. 17th at the beginning of class 3) Test #2 – Thur. Oct. 17th - Target Concepts on-line- ½ page of notes front side only done by hand
  • 3. •Basic particles that make up a substance. We can identify substances according to their __________ & ___________ properties Brainstorm – OK to have the same ideas – a minimum of 2
  • 4. Why do we have to use more than just physical properties to determine what a substance is? •required knowledge of more properties. Physical Properties 1. Characteristics of materials that can be observed w/out carrying out a chemical reaction 2. Usually easy to reverse 3. NO NEW substance created Examples of Physical Properties Color, size, texture, density, freezing pt. electrical & thermal conductivity, luster, malleability, ductility, hardness, mass, solubility H2O Ice water + Heat = H2O Liquid water
  • 5. Chemical Properties 1. Characteristics that cannot be easily seen 2. Must create a chemical reaction to observe 3. NEW substance created 4. Difficult to reverse 5. Happens quickly (explosion) or slowly (rusting). Examples of Chemical Change Flammability, reacting with acid Oxidation (rusting-reacting w/oxygen), digesting, decomposition 2 H2O + = O2 H2 H2 2 molecules of water electricity 1 molecules of diatomic oxygen 2 molecules of diatomic Hydrogen Different Substances
  • 6. Chemical Properties continues….. Notice that water can be separated into its constituents(parts) ……..2x the amount of hydrogen is collected as compared to oxygen. (H2O) Why?
  • 7. On Lined Paper Signs a Chemical Reaction may be occurring: 1. Change in Color 2. Bubbling or Fizzing 3. Precipitant is created http://www.harpercollege.edu/tm- ps/chm/100/dgodambe/thedisk/chemrxn/signs.htm 4. Heat is absorbed or released (endothermic vs. exothermic) 5. Energy is produced What is the difference between endothermic and exothermic? http://antoine.frostburg.edu/chem/senese/101/therm o/faq/exothermic-endothermic-examples.shtml Endothermic – Therm (heat) Endo (in) Ex: Cooking and egg, baking bread, photosynthesis Exothermic = Therm (heat) Exo (out) Ex: Rusting, Explosions, Fireworks
  • 8. Physical or Chemical? 1. Identify whether the change is Physical or Chemical 2. Identify the reason as either you still have the Same substance or a Different one was created Event • Identify the event as either physical or chemical. • Explain why in bullet format • Use your notes as reference. Your Ideas 1) Come up with one chemical and one physical event – MUST BE YOUR OWN & DIFFERENT THAN ANYONE IN YOUR GROUP
  • 9. Remember: The Law of Conservation of Mass – Matter cannot be CREATED or DESTROYED. It can only change form(physical) or become rearranged (chemical – a change in how the atoms are connected) Review Questions 1-10 • Answers in your notes • Bullet format On-line activity Graded for HONESTY & PARTICIPATION Hyperlink on Learning Point under Daily Assignments for this week. SELECT: Quia Quiz How many did you get correct on your first try? ____/20
  • 10. Power Notes – Physical vs. Chemical – Due on Monday Oct. 14th at the beginning of class Don’t forget to Review and Reflect