January Standards: Physics

Potential EnergyConservation of Energy

Energy TransferKinetic Molecular Theory

POTENTIAL ENERGYP2.P1X A-B

What is Energy?

• Energy- the ability to do work

• Work- when force causes an object to move in the direction of a force– Transfer of Energy

D1

Types of Energy

1. Kinetic – Energy of motion– Kinetic = (mass X speed) squared / 2

2. Potential – energy of possibility– Gravitational Potential= weight X height

3. Mechanical – total energy – Mech = kinetic + potential

Types (Cont)4. Thermal – total energy of particles

5. Chemical- energy as compound re-arranges atoms

6. Electrical- energy of moving electrons

7. Sound- object vibrations

8. Light –vibrations of electrical particles

9. Nuclear- changes in nucleus of atom

Day One Assignment• Please create, on the front side of a piece of blank

paper, a pictorial representation of each of the types of energy

• Musts:– Have titles of each type– Have a definition of each type– Have a colored example for each type– You will have ALL NINE represented

Change of State D2• How does a solid become a liquid become a gas…

and so on?

Change of State

• Sublimation- solid to gas without liquid state

• Deposition- gas to solid without liquid state

• Condensation- gas to liquid

• Evaporation- liquid to gas

• Melting- solid to liquid

• Freezing- liquid to solid

ADD ENERGY

REMOVE ENERGY

Day Two Assignment

Physical or Chemical Change?

• What does it mean to change something?(Students, formulate a mental

response to share with the class)

• To change something means to alter it• Types of change:– Chemical– Physical

D3

Chemical Change • Chemical Change- making or breaking bond

between atoms– Can not be undone

• Examples (write at least two)– Rust iron oxide forms– Cookies Baking Ingredients combine– Bread Rising yeast causes expansion– Gas burning forms carbon and water– Sun tanning skin produces melanin– Log Burning carbon is produced

Physical Changes• Physical Change- re- arranges molecules but

does not affect their overall structure– Can be undone

• Examples (write at least two)– Making Ice Removal of heat– Cutting Paper Separation of

pieces– Dissolving Sugar Integration in H2O– Boiling Water Addition of heat– Pumping Up a Tire Adding gas substance

• Is Change of State (CoS) a chemical or a physical change? Why?

(Please formulate your thought and be ready to share)

• A Physical Change, because what you have changed can be returned to its original form

CONSERVATION OF ENERGYP3.P1 A

ENERGY TRANSFERP3. P2 A

KINETIC MOLECULAR THEORYP4.P1 X A-C