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The Variety of matter.-

MATTER   IS  ANYTHING   THAT OCCUPIES   SPACE.It   includes   everything   from   natural   substances,  such  as  minerals or  living  organisms,to   synthetic  materials .Matter  can  exist  in  three   distinct   states   -solid,  liquid,and   gas.A  solid  is  a  rigid   and  retains  its  shape.A  liquid   is  a  fluid ,  has  a  definite  volume,
and  will    take  the  shape  of  a  container . A   gas    fills  a  space , its  volume  will   be  the  same  as the  volume  of  its  container .Most  substances   can  exist   as  a  solid ,a  liquid, or   a  gas; the  state  is  determined   by  temperature.At   very  high   temperatures, matter  becomes  plasma  ,  often  considered  to   be  a   fourth  state   of  matter.All  matter   is  composed  of   microscopic   particles , such  as atoms  and   molecules.The  arrangement    and  interaction  of  these  particles give   a  substance  its  physical   and  chemical  properties , by  which   a  matter  can  be  identify.There  is  a  huge   variety   matter   because   particles  can  arrange   themselves   in  countless  ways ,in  one  substance  or  by mixing  with    others .Natural   glass   ,for  example  , seems  to  be  a  solid  but is  ,in  fact  ,  a   super  cooled  liquid ;the  atoms  are   not  locked  into  a  pattern   and  can  flow.
Pure   substances    known  as   elements   combine  to  form   compound   or mixture..Mixtures   called  colloids.  are  made  up  of   larger  particles   of  matter   suspended   in  a   solid ,liquid, or  gas, while    a  solution     is   one  substance   dissolved  in   another.
CHANGING    STATES  OF  WATER
.
SOLID  STATE  -ICE,
LIQUID-STATE-WATER.
GASEOUS   STATE-STEAM.
The    solid  state  of  water  ice,forms   ,when liquid  water is  cooled   sufficiently.
When  temperature  of  a  substance   rises  above its  freezing   point ,it  melts to  become  a  liquid.Ice  changes   to water.
Above  its  boiling  point ,a substance  will   become   a   gas.When  
heated  sufficiently    liquid water  turns    to   steam, a  colour less gas.  

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