Test #2 Review - Chapter 4 Flashcards
A tightly bound group of atoms
Molecule
The charge of an electron
Negative
Freezing point of water on the Celsius scale.
0°
State of matter where cohesive forces are the strongest.
Solid
Boiling point of water on the Fahrenheit scale.
212°
Reading of 0 on the Kelvin scale where there is no movement in the molecules of a body.
Absolute Zero
Three ways to speed up evaporation.
Increase temperature, increase surface area, and decrease air pressure.
Freezing point of water on the Kelvin scale
273
What do the terms heating and cooling refer to?
Net directions of energy flow
The transfer of energy between molecules of a solid.
Conduction
A measure of the average kinetic energy of molecules making up a substance.
Temperature
The amount of heat needed to increase the temperature of 1 gram of substance 1 °C
Specific Heat
The transfer of energy between molecules of a liquid or gas
Convection
Phase change where matter in a solid state goes directly to a gaseous state.
Sublimation