Chapter 2: Atoms and Heat

Question 1

ideal gas law

Answer 1

the gas pressure is proportional to the absolute temp.

Question 2

explosion

Answer 2

occurs when an object gains so much energy that it becomes a very hot gas
high pressure of the gas and the resulting rapid expansion that make up an explosion

Question 3

entropy

Answer 3

a measure of the disorder in molecules

Question 4

four major laws of thermodynamics

Answer 4

(0) objects in contact tend to reach the same temp.
(1) energy is conserved
(2) extracting useful energy from heat requires a temp. difference
(3) the entropy of the Universe if always increasing

Question 5

the basic principle of the refrigerator, the air conditioner, and the heat pump

Answer 5

energy can be used to extract heat from an object

Question 6

heat

Answer 6

the shaking of molecules

they have kinetic energy

Question 7

absolute zero

Answer 7

0 K

• 273 C
• 459 F

Question 8

conduction

Answer 8

Transfer of heat through things in direct contact with each other.

Question 9

convection

Answer 9

对流

Heat transfer through the bulk motion of fluid as hotter portions rise and colder portions sink.

Question 10

radiation

Answer 10

Heat transfer through the production of EM waves from a hot thing.