1. Quarter 3 Review

2. Be able to read graph! Physical and Chemical Properties: Phase Change:
Water to Ice
Ice to Liquid
Gas to Liquid
Water to Water Vapor
Describe what happens!

3. Be able to re-arrage the density Formula:
Click on “Video” below to view tutoral.
Problem 1: You have a rock with a volume of 15cm3 and a mass of 45 g. What is its density?
Problem 5: You decide you want to carry a boulder home from the beach. It is 30 centimeters on each side, and so has a volume of 27,000 cm3 . It is made of granite, which has a typical density of 2.8 g/cm3 . How much will this boulder weigh?

4. Mixtures:
Video Help!
In chemistry, a mixture forms when two or more substances are combined such that each substance retains its own chemical identity. 
EXAMPLES OF MIXTURES
Flour and sugar may be combined to form a mixture.
Sugar and water form a mixture.
Marbles and salt may be combined to form a mixture.
Smoke is a mixture of solid particles and gases.
A pure substance or chemical substance is a material that has a constant composition(is homogeneous) and has consistent properties throughout the sample. Here are examples of pure substances:
tin, sulfur, diamond, water, pure sugar (sucrose), table salt (sodium chloride) and baking soda (sodium bicarbonate).

5. Chemical reactions: Video Help!
There are several differences between a physical and chemical change in matter or substances. A physical change in a substance doesn't change what the substance is. In a chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed.
(click on link)
Signs of a Chemical Reaction:
Bubbles of gas appear. Gas-producing reactions run to completion when the gas can leave the reaction mixture.
A precipitate forms. ...
A color change occurs. ...
The temperature changes. ...
Light is emitted. ...
A change in volume occurs. ...
A change in electrical conductivity occurs. ...
A change in melting point or boiling point occurs.
(click on link)

6. Video Help: Re-arranging Gas Law Equations.
Boyle’s Law
For a fixed mass of gas at constant temperature, the volume is inversely proportional to the pressure.
Video Help: Re-arranging Gas Law Equations.
Charles’ Law
For a fixed mass of gas at constant pressure, the volume is directly proportional to the kelvin temperature.
Gay-Lussac’s Law
Gay-Lussac’s Law is an ideal gas law where at constant volume, the pressure of an ideal gas is directly proportional to its absolute temperature. In other words, Gay-Lussac's Law states that the pressure of a fixed amount of gas at fixed volume is directly proportional to its temperature in kelvins