Further to the sister state relationship, the City of Rockingham in Western Australia and the City of Ako in Hyogo signed a sister city agreement in 1997. It is one of nine sister city relationships between Western Australian and Japanese cities.
The emission spectrum of a chemical element or chemical compound is the spectrum of frequencies of electromagnetic radiation emitted due to an atom or molecule making a transition from a high energy state to a lower energy state.The energy of the emitted photon is equal to the energy difference between the two states.There are many possible electron transitions for each atom, and each transition has a specific energy difference. This collection of different transitions, leading to different radiated wavelengths, make up an emission spectrum.Each element's emission spectrum is unique.here are many possible electron transitions for each atom, and each transition has a specific energy difference. This collection of different transitions, leading to different radiated wavelengths, make up an emission spectrum. Each element's emission spectrum is unique.
1 Exothermic is the taking in of energy. 2  Color change: the increase or decrease of potential energy stored in new bonds. 3  Precipitate formed: increase or decrease of potential energy in new bonds formed.  Electrical potential: The release of chemical bond energies to cause the movement of valence electrons.