Question

As the temperature of a sample of matter is increased, what happens to the average kinetic energy of the particles in the sample?

A. It decreases.
B. It increases.
C. It does not change.

Answer 1

it would be
B. it increases.

Answer 2

B. It increases.

Step-by-step explanation:

The kinetic energy is associated with the motion of the particles of a substance.

When the temperature increases, the movement will increase, which means that the velocity of the particles will increase.

According to the mathematical defenition of kinetic energy

`Ek = (1)/(2) mv^(2)`

The higher the velocity, the higher the kinetic energy.

If the matter is made by a monoatomic gas, the relation between the kinetic energy and temperature is even more evident:

`Ec = (3)/(2)(R)/(Na)  T`

R: gas constant

Na: Avogadro's number

T: temperature