It's a Gas' is a phrase used to describe something that is exciting or fun. The crossword solutions for this phrase are RADON (5 letters), Ethane (6 letters), STEAM (5 letters), METHANE (7 letters), NEON (4 letters), Esso (4 letters), ETHER (5 letters), OZONE (5 letters), and ARCO (4 letters), XENON (5 letters). RADON is a radioactive gas that is found naturally in the environment. Ethane is a colorless, odorless gas that is used as a fuel source. STEAM is a gas created by boiling water. METHANE is a colorless, odorless gas that is the main component of natural gas. NEON is a colorless, odorless gas that is used in NEON lighting. Esso is a brand of gasoline. ETHER is a colorless, volatile liquid that is used as an anesthetic. OZONE is a gas that is formed when oxygen molecules are exposed to ultraviolet light. ARCO is a brand of gasoline. XENON is a colorless, odorless gas that is used in some types of lighting.