Chapter 2 Flashcards
_____ is the science of thermal energy (heat) and how it transforms to and from other forms of energy
Thermodynamics
What process releases heat by combining a fuel with oxygen and igniting it l?
Combustion
The first law of thermodynamics
Energy cannot be created or destroyed
Energy can be changed from one form to another
The second law of thermodynamics states that energy will flow how?
From higher temp to lower temp
What does one find when measuring the velocity attained by molecules in a substance?
Temperature
Heat that causes a change in temperature is called ______
Sensible Heat
Specific heat is the amount of energy required to change the temperature of 1 lb. Of substance 1 °F, is measured in what?
BTU’s
What is the specific heat of water?
1 BTU
A substances _______ _______ is the temperature at which it changes from a solid to liquid
Melting point
Upon absorption of enough heat, a liquid will change to vapor. The temperature this occurs is its ______ _____
Boiling point
The change that occurs in 9 or 10 is known as what?
Change of State
What is the heat that brings about a change in state called?
Latent heat
And this heat when used to change from liquid to vapor is called?
Latent heat of vaporization
What about if it changes from liquid to a solid?
Latent heat of fusion
What happens instantly when a liquid flows from a higher pressure area to a lower pressure area?
It flashes
