lecture 1

Question 1

What is temperature?

Answer 1

Movement of atoms

Question 2

Explain the difference between an open and a closed system

Answer 2

Open: mass and energy flows
Closed: Only energy flows

Question 3

Define the concept heat in words and specify unit.

Answer 3

Energy exchange between bodies caused by a temperature
difference

Heat is not a property
Heat, like work, only exists during the transfer from one
system to another. (J) Q

Question 4

Define the concept of work in words, indicate unity and give an expression for
calculation.

Answer 4

Work = Force * Distance, Energy required to move an object one distance unit. J

Question 5

What is pressure?

Answer 5

F/A, N/m2. Pa

Question 6

What is expansion work?

Answer 6

The work involved in the change of volume of a gas against an external pressure

Question 7

What is internal energy?

Answer 7

Energy attributed to the motions and configurations of the
individual molecules, atoms, and subatomic particles making
up the matter in the system

Question 8

What does it mean for a system to be adiabatic? What does it mean to be isolated?

Answer 8

The word adiabatic means without heat transfer

Isolated: No mass & energy
would cross any other
part of the boundary