1. DO NOW Define a physical and a chemical change.
Give an example of each.
For a change to be chemical you must produce something new that you did not have when you started.

2. Energy can change from one form to another
ENERGY CHANGES
Energy can change from one form to another

3. Law of Conservation of Energy
Energy can not be created or destroyed.
Energy is converted from one form to another

4. There are 7 different
forms of energy:

5. Mechanical Energy of objects in motion (potential and kinetic)
Ex: Swinging a hammer
Potential energy: Stored energy
Kinetic Energy: Energy in motion

6. Which has more potential energy?
Why?

7. Which has more potential energy?

8. How can we increase Potential Energy
You can increase potential energy by increasing mass or height of the object.

9. Chemical Energy released as an object is chemically changed
Ex: Digesting food
Burning wood

10. Heat Energy that flows from hotter objects to colder objects
Ex: Heating water on a stove

11. Atomic Energy released from nuclear reactions splitting atoms
Ex: Radioactivity

12. Light Energy that travels in waves producing the spectrum of colors
Ex: Sun, light bulb

13. Electrical Energy from the flow of the electrons in atoms
Ex: Any appliance that “plugs in”

14. Sound
Energy that travels as air molecules vibrate
Ex: Talking

15. DO NOW
What are the 7 forms of energy?

16. “M C H A L E S” M : Mechanical C : Chemical H : Heat A : Atomic
L : Light
E : Electrical
S : Sound

17. Look at the picture below and describe what type of energy is being converted from and to.