Brainlies : ) 1. which of the following is a property of salts? undergo combustion do not make ionic bonds easily do not conduct electricity as solids formed due to reaction of acid with water 2. the nucleus of an atom is dense and positively charged. what was observed when positively charged particles were radiated onto a gold atom during rutherford's experiment because of this? negative charges were concentrated at the center of the atom. particles that struck the center of the atom were repelled. particles that struck the edges of the atom were repelled. positive charges were distributed all over the atom.