1. Chemical vs. Physical Properties

2. Review Physical vs. Chemical Changes

3. Chemical Property: Physical Property: Describes reactions
What a chemical will react with
When a chemical will react
How a chemical reacts
Physical Property:
Describes physical changes
Temperatures phase changes occur
What it will dissolve in
If it will bend or crumble when hit (malleable or brittle)
Describes static characteristics
Color
Smell
density

4. Water’s Properties Physical Properties of Water:
Boils at 100 degrees C
Freezes at 0 degrees C
Transparent and clear
Odorless
Density of 1 g/mL
Chemical Properties of Water:
Unreactive with water
Reacts when electrocuted to form gasses

5. On your group’s white-board/paper, list the Chemical Properties of iron in one column. List the Physical Properties of iron in a different column.
Example Scenario:
Iron is a relatively soft, shiny, gray, solid at room temperature.

6. Example Scenario:
Iron is a relatively soft, shiny, gray, solid at room temperature. It conducts electricity, is magnetic, and has a density of 7.9 g/ml at room temperature. As a solid, it will not dissolve in any liquid. However, It melts at 28000F, and will mix with melted carbon to form a mixture called steal. Similar alloys can be made my mixing melted iron with melted nickel, chromium, or manganese. Iron typically reacts slowly with oxygen or water to form rust, a flaky solid. It also bonds to oxygen in our blood, giving our blood that red color, and speeds up reactions in our cells.

7. On your group’s white-board/paper, do the same thing with sugar!
Sugar has a density of 1.6 g/mL. It would melt at 367 degrees Fahrenheit, if it didn’t react first with the oxygen, producing carbon dioxide and water, and releasing a lot of heat. Sugar also reacts with potassium nitrate to form home-made rocket fuel, and sulfuric acid can separate the carbon atoms from the hydrogen and oxygen atoms in sugar, causing a “dehydration reaction”.

8. Measurements Characteristic Units equipment Mass Length or Height
Volume
Time
Temperature pH

9. Characteristic
Units
equipment
Mass
Grams (g)
Balance or Scale
Length or Height
Volume
Time
Temperature pH

10. Characteristic
Units
equipment
Mass
Grams (g)
Balance or Scale
Length or Height
Meters (m)
Ruler, Meter Stick
Volume
Time
Temperature pH

11. Characteristic
Units
equipment
Mass
Grams (g)
Balance or Scale
Length or Height
Meters (m)
Ruler, Meter Stick
Volume
Liters (L)
Centimeters cubed (cm3 )
Graduated Cylinder
Ruler & Calculate
Time
Temperature pH

12. Characteristic
Units
equipment
Mass
Grams (g)
Balance or Scale
Length or Height
Meters (m)
Ruler, Meter Stick
Volume
Liters (L)
Centimeters cubed (cm3 )
Graduated Cylinder
Ruler & Calculate
Time
Seconds (s)
Stop-watch
Temperature pH

13. Characteristic
Units
equipment
Mass
Grams (g)
Balance or Scale
Length or Height
Meters (m)
Ruler, Meter Stick
Volume
Liters (L)
Centimeters cubed (cm3 )
Graduated Cylinder
Ruler & Calculate
Time
Seconds (s)
Stop-watch
Temperature
Degrees (0F or 0C)
Thermometer pH

14. Characteristic
Units
equipment
Mass
Grams (g)
Balance or Scale
Length or Height
Meters (m)
Ruler, Meter Stick
Volume
Liters (L)
Centimeters cubed (cm3 )
Graduated Cylinder
Ruler & Calculate
Time
Seconds (s)
Stop-watch
Temperature
Degrees (0F or 0C)
Thermometer pH
none
Litmus paper

15. Density is a physical property.
formula
Density = units
equipment

16. How to determine density:
Measure volume with graduated cylinder Or
Measure lengths with ruler and calculate
And Measure mass with a balance.
Then Divide: Mass / Volume = Density