2. Objective
Students will be able to distinguish
between physical properties and
chemical properties of objects.
3. Physical vs. Chemical
Properties
Fold a blank piece of white paper in half.
One side will be for physical properties
and the other side will be for chemical
properties
Page 8-9
What are they?
Examples???
4. Is it Chemical or Physical?
Read the directions with your group
Who is doing what in the experiment?
Raise your hand when you are ready to
be checked
5. Is it chemical or physical?
When done…
Return graduated cylinders and baking
soda to front table
Rinse off spoon and return to cup with
spoons
Throw away the three cups
Make sure table is cleaned off
Start working on questions
7. Is it Chemical or Physical?
1. Describe the properties of the ingredients that
you used to make the glue.
2. Describe the properties of the glue that you
made.
3. Is making glue an example of a chemical
change or a physical change? Explain how you
know.
4. Did a change in energy occur with this change in
matter? Explain.
8. Changes in Matter Homework
What is a physical change?
What is a chemical change?
How are changes in matter related to
changes in energy?
9. Physical Vs. Chemical
Changes
Each station has a different item or items in a before state and an
after state. You will have to go to each station.
1. Write down what items are at the station in the “Before” section.
2. Write down what items are at the station in the “After” section.
(What is different?)
3. Determine whether or not the items have changed chemically or
physically.
4. Write your reason for choosing that type of change.
5. Repeat for all of the stations.
6. Once complete, return to your seat.
12. Homework
1. Physical and
chemical
2. Chemical
3. Physical
4. Physical
5. Chemical
6. Yes. Exothermic
change; yes,
endothermic
change; no, every
change in matter
involves a change
in energy
7. Matter
8. True
9. True
10. True
11. Exothermic change
12. Endothermic
change
13. Chemical Vs. Physical Changes
Station
Number
Item(s) Before
Change
Item(s) After
Change
Is it Physical or
Chemical?
Reason
1 Ice Water Physical
2 uncooked
pasta
Cooked pasta Physical
3 Stick of chalk Crumbled
chalk
Physical
4 new penny Tarnished
penny
Chemical
5 Lemonade
powder/ water
lemonade Physical
6 Unlit match Lit match Chemical
7 salt/ water Saltwater Physical
8 Alka-Seltzer
tablet/ water
Bubbly water Chemical
9 Pink paper Red/ blue
paper
Chemical
10 Vinegar/
baking soda
salt, water,
CO2 gas
Chemical
18. Properties/ Changes
Worksheet
____________ properties can be observed without chemically changing
matter.
____________ properties describe how a substance interacts with other
substances. ____________ have definite shapes and definite volumes.
____________ have indefinite shapes and definite volumes. ____________ have
indefinite shapes and indefinite volumes.
Phase changes are ____________ changes. ____________ point is the
temperature at which a liquid turns to a solid. It is also equal to the
____________ point which is the temperature at which a ____________ turns
to a ____________. ____________ point is the temperature at which a liquid
turns to a gas, and ____________ point is the temperature at which a gas turns
to a liquid. Occasionally, a solid turns directly into a gas without turning into a
liquid first. This is called ____________.
19. Changes Reading
Read the article on Physical and
Chemical Changes
Highlight
Answer the questions
You may work with a group