Density, Pressure, Solids, Liquids, Gases, Gas Laws Flashcards
Density
Measure of mass in a certain volume of substance
Verifying density
Big volume of water to reduce error
Scale to tare so only water measured
Calculate
Weight lump of metal, mass and volume
Pressure
A measure of how spread out a force is
When doing pressure problems, look out for the number of feet
Pressure and density
When height is involved use
P=pgh
Pressure in liquids or gases
FA/AA=FB/AB
Pressure is transmitted equally in all directions
Molecular separation
S, v small
L, small ish
G, large
Motion of particles
S, vibrate
L, slip and slide
G, random, v fast
Attraction between molecules
S, strong
L, weaker
G, negligible
Relative density
S, bit bigger
L, equal ish
G, much smaller
Expands to fill space
S, no
L, yes
G, yes
Solid to liquid
Molecules separate from lattice formation
Liquid to gas
Molecules start touching and when the state changes, molecules separate
Brownian motion
Random motion of smoke particles suspended in a fluid
Random motion
Fats moving particles
Vvv small
How temperature affects pressure
Mean KE of particles is higher
Move faster
Particles which move faster will collide, exert more pressure more often with more force
How the number of particles affects pressure
Mean KE of particles is the same
Same speed of particles
Larger number of particles will collide with wall, more force, more pressure
