<P> In physics , a state of matter is one of the distinct forms in which matter can exist . Four states of matter are observable in everyday life : solid , liquid , gas , and plasma . Many other states are known to exist , such as glass or liquid crystal , and some only exist under extreme conditions , such as Bose -- Einstein condensates , neutron - degenerate matter , and quark - gluon plasma , which only occur , respectively , in situations of extreme cold , extreme density , and extremely high - energy . Some other states are believed to be possible but remain theoretical for now . For a complete list of all exotic states of matter , see the list of states of matter . </P>
<P> In physics , a state of matter is one of the distinct forms in which matter can exist . Four states of matter are observable in everyday life : solid , liquid , gas , and plasma . Many other states are known to exist , such as glass or liquid crystal , and some only exist under extreme conditions , such as Bose -- Einstein condensates , neutron - degenerate matter , and quark - gluon plasma , which only occur , respectively , in situations of extreme cold , extreme density , and extremely high - energy . Some other states are believed to be possible but remain theoretical for now . For a complete list of all exotic states of matter , see the list of states of matter . </P>
how many states of matter are often found on earth
how many states of matter are often found on earth
Four
Four