The structure of the atom

The structure of the atom

1. Matter

   • anything that has mass and occupies space
     • element
       • consists of only one type of atom
       • atom
         • smallest particle of an element that can participate in a chemical reaction 
       • molecule
         • group of two or more atoms which are chemically bonded together
     • compound
       • substance that contains two or more elements that are chemically bonded together
       • molecule
       • ions
         • positively or negatively charged particles
   • diffusion
     • movement of substances from high concentrated region to low concentrated region 
     • experiment diffusion
   • kinetic theory
   • changes of state of matter
     • experient naphthelene

2. Atomic structure

   • history development
     • DaTuk Rambut Botak Cacat
   • subatomic particles
     • protons
     • neutrons
     • electrons
   • proton number and nucleon number
     • 1. proton number = number of protons
     • proton number
       • of an element is the number of proton in its atom
     • nucleon number
       • of an element is the total number of protons and neutrons in it's atom

3. isotopes

   • are atoms of the same element with the same number of protons but different number of neutrons 
   • examples
   • uses
     • rujuk buku

4. electron arrangement

   • valence electron
     • electron found in the outermost occupied shell of an atom

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