CFA Review

Vocabulary

100

Anything that has mass and volume.

What is MATTER?

200

These are the characterstics of an object and you use your senses to identify them.

What are PHYSICAL PROPERTIES?

300

Type of change where a new substance is created.

What is a CHEMICAL CHANGE?

400

A type of change where the substance stays the same, but size and shape may change.

What is a PHYSICAL CHANGE?

500

A pure substance that is composed of only one type of atom.

What is an element?

Physical/Chemical Change

100

Is a melted popsicle an example of a physical change?

What is YES? You can melt and refreeze a popsicle and it will still be a popsicle.

200

Is rust an example of a chemical change?

What is YES? You cannot change rust back into the metal is was before; therefore, it is a chemical change.

300

Name a food that is an example of a physical change.

What is a salad or trail mix?

400

Explain how water could be an example of a physical change.

What is freezing and melting water to and from ice is an example of a physical change?

500

Name a food that is an example of a chemical change and explain why.

Answer will vary

Kinetic/Potential Energy

100

Energy of motion is called _____. 

What is kinetic energy?

200

Energy that is stored is called _____. 

What is potential energy?

300

Give an example of kinetic energy.

What is....?

answers will vary

400

What are 3 forms of potential energy?

What is thermal energy, chemical energy, and electrical energy?

500

What are the 5 main forms of kinetic energy?

What is mechanical energy, electrical energy, light energy, thermal energy, and sound energy?

Energy Transfer

100

When two objects push or pull on each other over a distance, what type of energy would this be?                                                       

    

What is mechanical energy?

200

When warmer objects is in direct contact with a cooler one. 

What is thermal energy?

300

When an electrical source is connected in a computer circuit to an electrical device, what energy type is created?

What is electrical energy?

400

The transfer of energy by electromagnetic waves. 

What is electromagnetic energy?

500

Placing your hand above a candle... what type of energy would you experience?

What is thermal energy?

Random

100

You use these to help you identify the physical properties.

What are YOUR SENSES?

200

These molecules move rapidly and freely when there is open space.

What is a gas?

300

Which property of water is demonstrated when it changes from a liquid to a gas at 212°F?

 A. density

B. solubility

C. boiling point

D. melting point                                                  

    

What is C?

400

If you take some ice cubes out of the freezer at 3:30 p.m. An hour later, you observed how the ice cubes had changed. The change is best described as: 

A. Chemical because a liquid formed. 

B. Physical because it happened over time. 

C. Physical because no new substance was formed. 

D. Chemical because heat caused the change. 

What is C?

500

Coffee crystals are dissolved in water to make a cup of instant coffee. Which best describes the chemical property that is being displayed in this situation?

A. density

B. freezing

C. melting

D. solubility 

What is D?