Question

what are the two main ways of changing the physical state of matter

Answer 1

to change a physical state of matter we can apply
high temperature that is heating it
or
low temperature that is cooling it

Answer 2

to change the physical state of a matter either we have to provide it less or more heat

which means one way is temperature

secondly you can reduce or increase the pressure ( mostly for gas)



for information
that gases are liquefied by applying pressure




which means second is pressure

hope this helps you