Chemically inert gas is mainly used to fill hot air and party balloons. Balloons filled with it float upwards and this phenomenon is achieved as helium gas is less dense than air Chemically inert In chemistry, the term chemically inert is used to describe a substance that is not chemically reactive. Most Group 8 or 18 elements that appear in the last column of the periodic table (Helium, Neon, Argon, Krypton, Xenon and Radon) are classified as inert (or unreactive). These elements are stable in their naturally occurring form (gaseous form) and they are called inert gases. The noble gases were previously
Phase-out of incandescent light bulbs potentially visually-obstructive snow and ice on warning lights and signs. The heat is also used to melt the wax inside lava lamps. Some CFLs may not be compatible with existing dimming circuits such as those using TRIACs, although more dimmable CFLs are expected to become available as the phase-outs continue. Mains voltage halogen bulbs provide a somewhat more efficient dimmable alternative to common incandescent bulbs and are readily available, although they too will be phased out in the EU from September 2018. Dimmable LED lamps are available from several vendors, although not all LED lamps are compatible with dimmers and