1. Warm- Up/ Review Questions 02/01/2017
What are the four states of matter?
Label the following as an element, compound or mixture
Tin (Sn)
Peanut Butter and Jelly Sandwich
Silver Nitrate and Sodium Chloride are mixed to make a clear solution
FeCl3

2. Physical Properties
Physical Properties are properties that can be measured WITHOUT changing the substances’ state of matter
Examples:
Color of water with food coloring
Tearing a Piece of paper in half
Density, Conductivity, Malleability

3. Physical Change
Physical Changes are any changes to a substance that still causes the substance to retain its original properties that it had before
Examples:
Melting, Boiling, Sublimation
Good Time to show the phase triangle

4. Practice
Determine which of the following represents a physical change/ physical property:
a. The freezing of water to form ice cubes
b. The cutting of wood

5. Chemical Properties
Chemical Properties are the ability of different substances to undergo chemical reactions and form new substances
Examples:
The burning of wood
Milk turning sour
Leaves changing color in the fall

6. Chemical Changes
A chemical change occurs when a substance undergoes a change in composition
New substances are always formed during a chemical change
Example: The combustion of Ethane (C2H6) with oxygen to form H2O and CO2

7. Chemical Changes Continued
Chemical Changes usually require or release energy
Evidences of a chemical reaction:
a. Evolution of Light and Heat
b. Production of a gas
c. Formation of a solid

8. Practice
Are the following items going through a chemical change or a physical change:
Bleaching your hair
Squeezing oranges for orange juice
A plant turns sunlight, CO2, and water into sugar and oxygen
Ice Cream melts in the sun

9. Physical or Chemical glass breaking a rusting bicycle
melting butter for popcorn
freezing chocolate-covered bananas
burning toast
cream being whipped
burning leaves
fireworks exploding

10. Warm Up 02/02/2017
Convert 75 miles per hour to meters per second
Label following as physical or chemical change
1.Aluminum foil is cut in half
2.Jewelry tarnishes
Water evaporates from the surface of ocean
Milk goes sour

11. Density Density is the ratio of mass to volume Mathematically
D = Mass / Volume
Units for density include g/cm3, g/mL, or kg/m3

12. Density Continued Substances and their densities: Water 1 g/mL
Table Sugar g/mL
Gold g/mL
Ice g/mL
Ethanol g/mL
Show Rainbow Density Column and coke and diet coke demo.

13. Density
1. What is the density of an object that has a mass of 5 g and a volume of 2.5 cm3 ?
2. What is the mass of an object with a density of 10 g/mL and a volume of 2 mL?