types of phase change
te phase change that occurs when a solid changes to a liquid
melting
faster
this state of matter has no visible shape and fills its container
gas
tranferring energy out of a substance makes the molecules move more _____
slowly
these two factors determine whether a phase change will occur
molecular attraction and kinetic energy
what is the phase change when a liquid turns into a gas?
evaporation
the enrgy that an object has because its moving
kinetic enegry
when molecules that make up a substance experience a change to their freedom of movement and a the substance changes appearance
phase change
molecules can transfer energy to each other by ____
collision
true or false: the molecular attraction of a substance can chanhge
false
this is the type of phase change that occurs when a gas turns into a solid
deposition
this is a mezsure of the average kinetic energy of the molecules of a substance
temperature
this phase of matter holds its shape and does not take the shape of its container
solid
you can increase the kinetic energy of a substance by doing this to it
heating it
rubbung alcohol molecules have ____ molecular attraction than water molecules
less
the phase change when a solid turns into a gas?
sublimation
heating a substance increases this form of energy in the molecules of the substance
kinetic energy
this is the reason why a liquid can flow: because its molecules move _____ each other
around
when energy is transferred to or from a substance, it can change the molecules this
this occurs when the kinetic energy decreases enough so that the attraction between molecules puls them together
freezing
a substance with a greater molecular attraction will _______ into a solid at a higher temperature than a substance with lower molecular attraction
freeze
the more kinetic energy in a substance, the greather the ______ the molecules have
freedom of movement
a noticeably different form or sate of the same substance
phase
this is a way to transfer energy out of a substance
cooling
if substance A evaporates beffore substance B when the same amount of energy is transferred to it, substance A must have _____ molecular attraction
less