States Of Matter And Phase Changes Flashcards
How does the distillation process make use of phase changes?
The original liquid is turned into a gas and is then turned back into a liquid
What is distillation?
A process that takes apart different parts of a solution based on their boiling points so that they are separated.
What is a filtrate?
The original liquid in distillation
What is distillate?
The filtered liquid created after distillation
Are the particles in a solid moving? Explain
Yes because of the kinetic theory of matter
What does the kinetic theory of matter say about particles in matter?
All particles of matter are in constant motion
How do particles move in a gas?
Never at rest
How do particles move in a liquid?
More compact than in gas, move more slowly
How do particles move in a solid?
Fixed locations, but still move slightly
What is melting?
Solid to liquid
What is vaporization?
Liquid to has
What is condensation?
Gas to liquid
What is freezing?
Liquid to solid
What is sublimation?
Solid to gas
What is deposition?
Gas to solid
What temperature does ice melt?
0 degrees C
What temperature does water freeze at?
0 degrees C
What is the boiling point of water?
100 degrees C
Why and how do boiling temperatures change at higher altitudes?
They would change because the atmospheric pressure changes. The boiling point would be lower when the elevation is higher
Does temperature increase during melting?
No
Can both liquid water and steam exist at 100 degrees C?
Yes
What role does energy play during a phase change?
The energy breaks the bonds and pulls the molecules apart
What must be changed, temperature or heat energy during melting?
Heat energy
What is endothermic?
The system absorbs energy from its surroundings (energy ENters)
What is exothermic?
The system releases energy to it’s surroundings (energy EXits)
Which three phase changes are endothermic?
Melting
Vaporization
Sublimation
Which three phase changes are exothermic?
Deposition
Condensation
Freezing
