Question

At the molecular level, what does temperature represent?

  

	a.	the average potential energy of the chemical species in a system
	b.	the average kinetic energy of the chemical species in a system
	c.	the total amount of energy in a system
	d.	the total amount of energy transferred in a coffee cup calorimeter

How do we describe the kinetic energy of molecules?

	a.	the relative positions of the molecules
	b.	the translational, vibrational, and rotational motion of the molecules
	c.	the translational motion of the molecules
	d.	the difference in energy between the reactant and product species

  

Which of the following is equal to the specific heat capacity of a substance?

	a.	he amount of heat required to vaporize a solid or liquid
	b.	he amount of heat required to raise the temperature of a substance by 1 K
	c.	he maximum amount of heat that a substance may absorb without decomposing
	d.	he amount of heat required to raise the temperature of 1 gram of a substance by 1 K

Answer 1

At the molecular level temperature describes the average kinetic energy of the Chemical species in the system.

As, average kinetic energy is directly proportional to the absolute temperature on the Kelvin scale.

Thus, option B is correct.

Kinetic Energy describes the translational motion of the molecule only and doesn't consider rotational and vibrational motion.

Thus, option C is correct.

Heat capacity of any substance is described as the amount of heat required to raise the temperature of 1 g of substance by 1 K.

It is also known as thermal capacity.

Thus, Option D is the correct definition of heat capacity.

Hope this helps you.