Can an element with eight valence electrons still be reactive?

What happens to energy in an open system?

If a reactant was removed, did the new equilibrium system shift to make more reactants or more products?

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.