Potential Energy Curves

The most potential energy is at

• a

• b

• c

• d

Tags

NGSS.MS-PS3-2

Recently we learned about kinetic energy (energy of motion).

A system of objects may also contain stored energy, also known as potential energy, depending on their relative positions. As you can see on the energy graph, an object has more potential energy if it is positioned higher. In other words, the skater has more potential energy at the top of the ramp.

• GOT IT!

• I don't get it.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

Observe the model to answer the following question: When does the skater have the least potential energy?

• At the top of the ramp.

• At the bottom of the ramp.

Tags

NGSS.MS-PS3-2

Observe the model to answer the following question: Which of the following statements is true about the skater’s potential energy?

• The skater gains potential energy as he travels down the ramp.

• The skater loses potential energy as he travels down the ramp.

Tags

NGSS.MS-PS3-4

Miss Hyman changed the system by decreasing the mass of the skater. Observe the model to answer the following question: What happened to total energy when the mass of the skater decreased?

• The total energy in the system increased.

• The total energy in the system decreased.

Tags

NGSS.HS-PS3-1

Which statement accurately describes potential and kinetic energy in the system?

• As the skater gains kinetic energy, they gain potential energy.

• As the skater gains kinetic energy, they lose potential energy.

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5

What does a potential energy curve represent in a molecular system?

• The kinetic energy of molecules

• The potential energy as a function of molecular configuration

• The temperature changes in a reaction

• The pressure changes in a reaction

Which point on a potential energy curve represents the most stable state of a molecule?

• The highest point

• The lowest point

• The midpoint

• The point of inflection

In a potential energy curve, what does the term 'activation energy' refer to?

• The energy required to start a reaction

• The energy released during a reaction

• The energy at the lowest point of the curve

• The energy at the highest point of the curve

Tags

NGSS.HS-PS1-4

How can potential energy curves be used to predict reaction spontaneity?

• By comparing the initial and final energy levels

• By measuring the curve's slope

• By analyzing the curve's symmetry

• By calculating the area under the curve