Valpolicella Ripasso is a form of Valpolicella Superiore made with partially dried grape skins that have been left over from fermentation of Amarone or recioto. Winemaking in the region has existed since at least the time of the ancient Greeks.
Barium chloride, or any other barium salt, should burn with a green flame. When a barium salt is burned, the thermal energy is transferred to the outer electrons of the barium ions. They gain enough energy to excite them to a higher energy level. They then drop back to their ground state, releasing energy.
Barium carbonate is used to purify some chemical solutions and is the primary base material for the manufacture of other barium compounds. Barium forms several other useful compounds. Barium nitrate (Ba(NO 3) 2) burns with a bright green color and is used in signal flares and fireworks.