Energy Quiz ( Chemistry edg 21)

Which statement describes thermal energy?

Energy associated with temperature

Which statement is correct about the law of conservation of energy?

Energy is transferred when atoms are rearranged.

What happens to energy when Sally kicks a soccer ball?

Kinetic energy is transferred from the leg to the soccer ball.

A baseball player hits a ball. Which is the best description of the energy of the ball as it flies over the pitcher's head?

Kinetic or Mechanical

In a chemical reaction occurring in an open beaker, the reactants have a mass of 10.0 g and contain 1000 J of energy. The products in the beaker contain a mass of 5.0 g and 500 J of energy. Which best explains the difference in energy and mass as reactants are converted to products?

Law of conservation of energy

What type of energy is the sum of an object's potential and kinetic energy?

Mechanical

A generator contains a coil that spins to produce an electric current. How is energy transformed by using a generator?

Mechanical energy is transformed to electromagnetic energy.

When an object falls toward the ground due to gravity, what type of energy becomes kinetic energy?

Potential

Which is the best term to use when describing the energy of position?

Potential- An object can store energy as the result of its position.

Which form of energy is directly related to the measure of the average kinetic energy of the particles in a substance?

Thermal energy