Matter Flashcards
Why does the temperature not change when it is changing state (despite thermal energy being removed or transferred to a body)?
because the energy is being used for changing the separation (bond strength) between particles
What is latent heat of vaporisation?
boiling or condesing of a substance (liquid to gas or vice versa)
What is the latent heat of fusion
melting or freeing
solid to liquid or vice versa
What is the equation for the amount of energy required to change the state of a substance?
mass x latent heat
Describe the behaviour of idea gas in terms of pressure and temperature
- pressure is caused by gas colliding with objects
- high temperature = more kinetic energy = more collisions= more pressure
What is the equation for the effect of pressure on gas volume at constant temperature?
PV = constant
What is the equation for density?
p=m/v
What is the equation for force, area, and pressure
pressure = force/area
How do you measure the volume of an irregular object?
measure the volume of water it displaces
What is the equation for the hydrostatic pressure exerted by a fluid?
pressure = depth x fluid density x gravitational field strength
