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ATOMS ARE THE BASIC UNIT OF ALL MATTER,THE STRUCTURE THAT DEFINES ALL ELEMENTS AND HAS WELL DEFINED CHEMICAL PROPERTIES .THESE ARE COMPOSED OF THREE TYPES OF PARTICLES SUCH AS PROTONS,NEUTRONS AND ELECTRONS.
The most studied and common states on earth are solid, liquid, and gas the changes are:
From liquid to gas- Evaporation From liquid to solid- Solidification From solid to liquid- Fusion From solid to gas- Sublimation From gas to liquid- Condestation
In a solid state, the atoms are packed together and move only slighty In a liquid state, atoms move around each other, bur are still closed together In a gas state the atoms are further apart from each other and move only slighty no, it moves fast in all directions.