1. Energy Basics

2. Energy Basics The Law of Conservation of Energy
Energy canNOT be created or destroyed
It may be Transformed to another form
It may be transferred from one object to another
TOTAL ENERGY ALWAYS STAYS THE SAME

3. Three main forms of energy
Potential Energy
Kinetic Energy
Heat Energy
Light Energy

4. Potential Energy
Potential Energy: when an object stores energy. Examples:
Chemical Potential Energy : sugar is a chemical that stores energy
Gravitation Potential Energy : when an object is elevated against Earth’s gravity
Other Examples: A stretched Rubber Band

5. Kinetic Energy
Kinetic Energy : Energy of Motion

6. Heat Energy
Heat Energy: Energy in the form of moving atoms/ kinetic energy of atoms.

7. Light Energy:
Light Energy: Energy in the form of light waves/ photons.

8. Transformation of Energy
Energy canNOT be created or destroyed
It may be Tranformed to another form
Examples:
Light energy is transformed to chemical energy (sugar) by photosynthesis in plants
Chemical Energy (sugar) is transformed to heat energy by respiration in living organisms
Gravitational Potential energy is transformed to kinetic energy when a ball is dropped.

9. Transfer of energy Energy canNOT be created or destroyed
It may be transferred from one object to another
ENERGY STAYS IN THE SAME FORM, BUT MOVES TO A DIFFERENT OBJECT.
Examples:
The Kinetic Energy of a the queue/ white ball is transferred to the 8 ball during a pool game.

10. Practice: what kind of energy does this climber have?

11. Rube Goldberg Video Energy Transfer or Transformation? Explain:
Energy forms involved
Where does the transfer/ transformation take place?

12. Does a windmill represent energy transfer or transformation?
Explain:
Energy forms involved?
Where does the transfer/ transformation take place?

13. Deep Water Solo: http://www.youtube.com/watch?v=c5ZLctA-pcY
Energy Transfer or Transformation?
Explain:
Energy forms involved?
Where does the transfer/ transformation take place?

14. Do solar panels represent energy transfer or transformation?
Explain:
Energy forms involved?
Where does the transfer/ transformation take place?

15. Is this an energy transfer or transformation?
Explain:
Energy forms involved?
Where does the transfer/ transformation take place?

16. Today’s Activity Safety Considerations:
Goggles and Lab coats must be warn at all times
If you spill anything on your hands or other body parts, DON’T Panic but wash in the sink immediately.
Don’t get any chemicals in your eyes but if you do let me know immediately and we will flush it with water.
NO HORSE PLAY …STAY SERIOUS….

17. Today’s Activity Safety Considerations:
Wash your hands after you leave the lab today
DON’T through matches in the garbage. There are tin cans to dispose of them.
DON’T light anything on fire that you are not suppose to………
Follow directions carefully
Be mindful of your movement in the lab and the movement of others.

18. Teacher Demo

19. Station 1: Hit metal with string
Take two stings that are attached to the metal grate and wrap them around your index finger.
Place your fingers in your ears to block out any sound
Tap the grate against the table or have partner gently tap the grate with a ruler
Write down your observations and give a reason for your results.
1000 ml Pyrex (flame/ hear resistant) Beaker of distilled water with phenaltheline indicator
Tiny pieces of sodium metal
Latex gloves
A knife to cut sodium into small pieces.
Safety goggles

20. Station 2: Burning Magnesium Magnesium & Oxygen
CAUTION: Do not look directly at burning magnesium.
Position a watch glass near the gas burner. (we would like to use the alcohol burners for this one)
Using crucible tongs, grasp one end of the 5-cm strip of magnesium ribbon and hold it in the burner flame until the magnesium ignites.
Quickly position the burning magnesium so that the combustion products fall on the watch glass.
Wear goggles
Solid barium hydroxide reacted with solid ammonium thiocyanate produces barium thiocyanate, ammonia gas, and liquid water. This reaction gets down to -20°C or -30°C, which is more than cold enough to freeze water. It's also cold enough to give you frostbite, so be careful! The reaction proceeds according to the following equation: Ba(OH)2.8H2O (s) + 2 NH4SCN (s) --> Ba(SCN)2 (s) + 10 H2O (l) + 2 NH3 (g) Here's what you need to use this reaction as a demonstration: 32g barium hydroxide octahydrate
17g ammonium thiocyanate (or could use ammonium nitrate or ammonium chloride)
125-ml flask
stirring rod
Pour the barium hydroxide and ammonium thiocyanate into the flask.
Stir the mixture.
The odor of ammonia should become evident within about 30 seconds. If you hold a piece of dampened litmus paper over the reaction you can watch a color change showing that the gas produced by the reaction is basic.
Liquid will be produced, which will freeze into a slush as the reaction proceeds.
If you set the flask on a damp block of wood or piece of cardboard while performing the reaction you can freeze the bottom of the flask to the wood or paper. You can touch the outside of the flask, but don't hold it in your hand while performing the reaction.
After the demonstration is completed, the contents of the flask can be washed down the drain with water. Do not drink the contents of the flask. Avoid skin contact. If you get any solution on your skin, rinse it off with water.

21. Station 3: Drop a Marble into clay
Drop a marble into clay from 30 cm
Measure and record the diameter of the crater formed in mm
Write down your observations and give a reason for your results

22. Station 4: Hydrogen peroxide and Potassium Iodide
Add 30 drops (2 mL) of Hydrogen Peroxide to a medium-sized test tube. Clamp the test tube to a ring stand.
Add a little bit of soap to catch gas. 
Add 10 drops (1 mL) of potassium iodide to a different test tube.  
Quickly pour the KI to the H2O2.
Record your Observations: What do you see?
Wear gloves and goggles
Materials:
Watch glass
Gas burner
Crucible tongs
5 cm Magnesium strips
matches

23. Station 5: HCl and Magnesium
Place 20 drops (2 mL) of HCl into one of your test tubes. 
Add 2-3 pieces of Magnesium
Feel the test tube
Record your Observations: What do you see, hear & feel?
Wear goggles
Materials:
Steel ball of known mass
Box lined with soft modeling clay
Meter stick
Ruler

24. Station 6: Acetic Acid and Sodium Bicarbonate
Place 20 drops of Acetic Acid into one of your test tubes
Using a thermometer record the temperature of the acetic acid solution.
Add 1 tiny scoop of Sodium Bicarbonate 
Feel the test tube
Record the new temperature of the mixture.
Wear goggles
Soapy water
1 M KI Potassium Iodide
300mL 10 %Hydrogen peroxide
2 medium sized Test Tube
Ring stand
Test tube clamp