Review: Final Exam

John is the pitcher for his baseball team, the Wildcats.

Which of the following best describes what happens to the ball right after

John throws a pitch?

• Kinetic energy is transferred

  from the ball to the air.

• Potential energy is

  transferred from the ball to

  the air.

• Kinetic energy is transferred

  from John's arm to the ball.

• Potential energy is

  transferred from John's arm

  to the ball.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which of the scenarios best models

the conversion of kinetic energy into

thermal energy?

• Someone warms their hands

  by rubbing them together

  quickly.

• Someone warms their hands

  by placing them by a fire.

• Someone warms their hands

  by wearing gloves.

• Someone warms their hands

  by placing them near a light

  bulb.

Tags

NGSS.MS-PS3-5

A student is on a rollercoaster. Where

is potential energy the greatest?

• location A

• location B

• location C

• locations A and C

Tags

NGSS.MS-PS3-2

Anna drop three different balls from your second-floor deck to the

ground. The mass of the balls is shown. Which ball will experience the greatest change in kinetic energy from the deck to the ground?

• baseball

• golf ball

• tennis ball

• both

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The diagram represents the reaction of methane with oxygen gas to form carbon dioxide and water. The chemical reaction shown above takes place in a closed system. What is true about the system while the reaction occurs?

• The total number of particles

  in the system decreases.

• The total number of particles

  in the system increases.

• The total mass of the

  particles in the system

  increases.

• The total mass of the

  particles in the system stays

  the same.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What do you call the basic unit of an element?

• molecule

• compound

• atom

• mixture

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

What is formed when elements are combined chemically?

• atom

• mixture

• compound

• molecule

Tags

NGSS.MS-PS1-1

What do you call two or more atoms which is the basic unit of substances?

• element

• mixture

• compound

• molecule

Tags

NGSS.MS-PS1-1

What is formed when different substances only combine physically?

• atom

• molecule

• mixture

• element

Which of the following are examples of chemical change?

• rough texture of floor, red color of apple

• digestion of food, burning of natural gas

• grating cheese, water condensing into fog

• writing of paper, looking out of the window

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5