Show:
Fluids
Pressure
Gas Laws
Energy and Thermal Energy
State Changes
100
What is a fluid?
A liquid or gas
100
What is 'force?'
A push or pull
100
What does temperature measure?
The average speed of particles
100
What is energy?
Being able to move things
100
What happens when heat is added to liquid water at 100⁰C? (it's at 1 atm pressure)
Some of the water evaporates
200
What is 'how a fluid moves' called?
Flow
200
What unit is used to measure force?
the newton
200
What temperature is it if there is no particle movement at all?
absolute zero
200
What unit is used to measure energy?
joules
200
What happens when heat is added to solid water (ice) at 0⁰C? (it's at 1 atm pressure)
some of it melts
300
What is it called when a particles moves in an unpredictable way?
Random movement
300
How many dimensions does area have?
2
300
What temperature is aboslute zero on the Kelvin temperature scale?
zero
300
What is thermal energy?
heat
300
What is 'the thermal energy needed to melt one gram of a substance' called?
heat of fusion
400
What is 'how much of something there is in a unit volume' called?
Concentration
400
What is pressure?
force over area
400
What does 'ideal' mean?
perfect
400
What are 3 forms (types) of energy?
electricity, thermal energy (heat), light, chemical energy, movement, matter
400
What is 'the thermal energy needed to evaporate one gram of a substance' called?
heat of vaporization
500
Diffusion happens at _________ (higher/lower) temperatures and with particles of ____________ (higher/ lower) mass.
higher, lower
500
What causes gas pressure?
Particles hitting a wall through their random movements
500
What is an assumption?
Something that is taken as true for a situation
500
Fill in the blank: Energy is not _____________, but is measured using things like distance, time, mass, and temperature
observed directly
500
What is sublimation?
Changing state from a solid to a gas