Which option is a measure of the average kinetic energy of the particles in a substance?(1 point)

Question

Responses

temperature
temperature

phase
phase

heat
heat

thermal energy

A blacksmith strikes a piece of metal with a hammer repeatedly. The metal slowly begins to glow as the temperature increases, and the metal becomes more malleable. Which changes on a microscopic level led to the visible changes in the properties of the metal? (1 point)
Responses

The individual temperature of the particles increased.
The individual temperature of the particles increased.

The potential energy of the particles decreased.
The potential energy of the particles decreased.

The kinetic energy of the particles decreased.
The kinetic energy of the particles decreased.

The average speed of the particles increased.
The average speed of the particles increased.

Which statement best describes heat?(1 point)
Responses

Heat flows from cold to hot and is the transfer of thermal energy.
Heat flows from cold to hot and is the transfer of thermal energy.

Heat flows from hot to cold and is the transfer of thermal energy.
Heat flows from hot to cold and is the transfer of thermal energy.

Heat flows from hot to cold and is a form of thermal energy.
Heat flows from hot to cold and is a form of thermal energy.

Heat flows from cold to hot and is a form of thermal energy.

What is thermal energy?(1 point)
Responses

the total kinetic energy of all particles in a substance
the total kinetic energy of all particles in a substance

the distance between particles and their freedom to move around
the distance between particles and their freedom to move around

the measurement of energy in an object due to position, conduction, or chemical composition
the measurement of energy in an object due to position, conduction, or chemical composition

a material that is a conductor of heat

Answer 1

Here are the correct responses to your questions:

1. Which option is a measure of the average kinetic energy of the particles in a substance?

   • Response: temperature

2. Which changes on a microscopic level led to the visible changes in the properties of the metal when a blacksmith strikes it?

   • Response: The average speed of the particles increased.

3. Which statement best describes heat?

   • Response: Heat flows from hot to cold and is the transfer of thermal energy.

4. What is thermal energy?

   • Response: the total kinetic energy of all particles in a substance

These answers should be correct based on the principles of thermodynamics.