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when a reaction produces a gaseous product that is allowed to escape.
an area or region where there is a high probability (95% chance) of finding electrons. Each...
when energy is added to an electron in the lowest energy state (the ground state) and it jumps...
a material that allows electricity to pass through it very easily.
the energy level, or shell, of an atom that contains the valence electrons.
polymerisation reaction that is started by a radical.