1. Day 49

2. Starter Day 47
Describe how a glass of milk changes as it sits out on a table for several days in a hot room.

3. Review
Classify each of the following as homogeneous mixture, heterogeneous mixture, metal, nonmetal, or compound:
14 Kt. Gold bracelet 6. nitrogen
Copper smoke
Orange juice with pulp 8. DNA
salt radon
Chromium Salt water

4. Review Identify the following as colloids, suspensions, or solutions.B C D A

5. Who am I?
Write at least 5 things that describe your person. Fold the paper in fourths and place it in the basket.
Line up along the sides of the room; half on each side facing each other.
Draw slip from the basket. One by one read the descriptions aloud and try to identify who it describes.

6. Physical Changes Does not change the substance Examples:
sharpening a pencil = shorter pencil, but still a pencil = change in size
Freezing water = solid water, but still water = change in phase (state)
Breaking a window = small, irregular pieces of glass, but still glass = change is shape

7. Chemical Changes Changes the substance Examples:
Ripening banana = changes color from green to yellow to brown to black = gives off gas, gets softer and sweeter
Burning wood = changes color, gives off water and smoke = leaves ash
Souring milk = odor, forms solids

8. Indicators of a reaction (change)
Color change
Change in properties
Precipitate (solid forms)
Gas production

9. Physical or Chemical Change
Copy the following and identify each as a physical or chemical change:
Making flooring from a tree
Digesting food
A car engine running
Mixing vinegar and baking soda
Melting iron
Making a horseshoe from a steel bar

10. Physical and Chemical Properties Cheat Sheet
Physical Properties Chemical Properties
Appearance without
changing the substance
Appears when substance
changes into else
Includes:
phase, color, odor,
density, conductivity,
malleability, ductility
Includes:
Reactivity
Combustibility (burning)
Corrosive (rusting)

11. Physical or Chemical Property
Copy the following and identify each as a physical or chemical property:
Purple gas
Sodium reacts with water in the air
Phosphorus burns in air
Freezing point 100 K
Brown solid
Boiling point 59°C

12. Foldable
Fold and cut paper to make a foldable with 4 doors. Using the next 2 slides, complete your foldable.

13. Physical and Chemical Change Foldable
Properties
Chemical
Properties
Physical
Change
Chemical
Change

14. Inside of Foldable Drawing and Examples of Physical Properties
Chemical
Properties
Definition of
Chemical
Properties
Definition of
Physical
Properties
Drawing and
Examples of
Physical
Changes
Drawing and
Examples of
Chemical
Changes
Definition of
Physical
Change
Definition of
Chemical
Change

15. Exit Slip Give an example of a physical change.
Give an example of a chemical change.