States of matter
Liquids have a ______ volume and a _______ shape
definite / varied
Give 1 example for each of the following phase changes
melting
freezing
vaporization
condensation
answers will vary
As pressure increases, the number of collisions _________________
increases
What is 6*C in Kelvin
279K
Define kinetic energy
Energy due to motion / movement
Which state of matter has the most energy?
Most - Gas
Least - Solid
In a phase change graph there is a steep part and a flat part. Which part is the actual phase change
flat part
Name a gas law with a direct relationship
Name a gas law with an inverse relationship
Direct - Charles
Inverse - Boyle
A bottle has a pressure of 6psi and is 200mL. The bottle is squeezed down to 150mL. What is the pressure?
8 psi
Do particles in a solid have kinetic energy?
Yes. They vibrate in place
Do gases experience attraction between particles? Why or why not?
Yes (technically), but we can ignore this force under normal conditions because gas particles are moving too fast with too much energy
Endothermic means ________energy
Exothermic means _________ energy
Absorb / Release
List 3 things that would increase the pressure of a system
- increase number of particles
- decrease volume
- increase temp
The volume of a fish tank is 10L. The temperature of the tank is 247K. If the owner upgrades to a 15L tank, what will the new temp be?
370.5 K
When two particles collide they __________ energy
transfer
What is the most common state of matter in the universe?
Plasma - 99% of the universe, incredibly high temps
Give an example of sublimation
Given an example of deposition
Dry Ice - Sub
Frost on your windshield - Dep
In some gas laws you must use only certain units. In which gas law(s) does this apply and what unit must be used
Charles & Combined - Must use kelvin for temp
The volume of a hot air balloon is 56,000 cubic feet. The temperature is 100*C. If the temperature is heated to 150*C what will the new volume be.
63,506.7 cubic feet
Explain why solids have a definite shape but gases and liquids do not
Answers will very
Solids experience STRONG attractive forces between particles which holds its shape
Define Bose - Einstein Condensate
State of matter proposed by Einstein & Bose. Only occurs at incredibly low temps. Many particles condense and begin acting as if they were one particle
List all 6 phase changes and label them as endothermic or exothermic
Melting - Endo
Freezing - Exo
Vaporization - Endo
Sublimation - Endo
Deposition - Exo
Condensation - Exo
Use clues like temp and volume to explain why pressure in outer space is virtually nonexistent. Use the word collision in your answer
Low Temp = Low collisions = Low Pressure
High Volume = Low collision = Low Pressure
20,133 K
Is a samples melting point is 62*C & boiling point is 229*C and it is currently 107*C, what state of matter is the substance currently in
Liquid
62 < 107 < 229