Flashcards in 3. Particle Model Of Matter Deck (25):
What is SA?
Equation for volume of a rectangle?
Equation for volume of a triangle?
Equation for volume of a circle?
Equation for volume of a sphere?
Equation for density?
Density = mass/volume
How to measure mass of an irregular object?
What should water have a gradient of?
Why do gas particles move more quickly?
They have more energy when heated
What happens when particles have a higher kinetic energy?
Greater average kinetic energy so faster average speed
Equation for pressure?
Pressure = force / area
What is pressure measured in?
N/cm2 or N/m2
What is the symbol for density?
What happens when molecules collide with the wall of a container?
They exert a force on the wall
What is the unit area?
The total force exerted by all the molecules
What does the pressure of a gas depend on?
mass of molecules
speed of molecules - hitting walls more often
how many molecules - more molecules to hit the walls
What happens when the volume of a gas decreases while the temperature stays the same?
The average speed stays the same but the molecules hit the walls more often
What does Boyles law state?
The pressure of a fixed mass of gas at a constant temperature is inversely proportional to its volume
Why are things different densities?
some atoms might have more mass than others
some atoms may be smaller so more can fit in the same space
they might be arranged differently
Equation for mass?
Density x volume
Equation for distance?
Distance = speed x time
Equation for force?
Force = pressure x area
Equation for area?
Area = force / pressure