- - Elements that make up the atmosphere
- - helium, neon, argon, krypton, xenon and radon are the six noble ...........
- - Elements No. 7, 8, 9 and 10, e.g.
- - Types of non-solid and non-liquid matter [plural]
- - Six of the first 10 elements on the periodic table
- - ...... up (fills the tank)
- - Some elements
- - Shapeless forms of matter
- - He is one of them, symbolically
- - He and CO seen together, symbolic of what?
- - They're in the air
- - 11 elements are ........ at room temperature
- - Focus of pneumatics
- - Unseen elements
- - All of the "noble" elements
- - All the "noble" elements
- - Rightmost column of the periodic table, e.g
- - Some inert elements
- - Eleven of the elements, under normal conditions
- - Rightmost column in the periodic table
- - The first two periodic table entries
- - Subject of Avogadro's law
- - Substances that can trap heat in the 27-Down, such as methane, 33-Across and 41-Across
- - They're in the atmosphere
- - Fills the tank, with "up"
- - Tops up the tank, with "up"
- - Volcanic elements
- - States of matter
- - Shoots the breeze
- - Hydrogen and helium are the two lightest
- - Nitrogen & xenon
- - Propane & helium
- - Helium & argon
- - Oxygen & radon
- - Fuels exciting things
- - Hydrogen, oxygen, nitrogen, etc.
- - oxygen and neon, for two
- - exhaust fumes, e.g.
- - Krypton & radon
- - Nitrogen and oxygen, for two
- - Carbon monoxide and carbon dioxide
- - Methane and radon, for example
- - atmosphere, essentially
- - greenhouse products?
- - Helium & hydrogen
- - Freon and oxygen
- - Dentists' aids, at times
- - Xenon and krypton
- - Tear and laughing
- - Range fuels
- - Oxygen and carbon dioxide, for example
- - Neon and xenon, e.g.
- - Neon and xenon
- - Neon and oxygen
- - Nebula make-up
- - Methane and butane
- - Laboratory substances.
- - Helium and nitrogen, e.g.
- - Freon and xenon
- - Firedamps
- - Fills 'er up
- - Butane and methane
- - Argon and neon, e.g
- - Talks idly
- - Vapors
- - Greenhouse.
- - Nebula makeup
- - Neon and helium
- - Helium and oxygen, for two
- - Neon and argon
- - Eg, neon, oxygen, etc
- - Argon and neon
- - Those responsible for atmosphere covered up partying as escapism
- - Noble ones are inert
- - Oxygen and carbon dioxide
- - Hydrogen and carbon monoxide, say
- - Fluid statics study
- - Natters (informal)
- - Drunken sages: some are noble!
- - Argon and xenon
- - Volcanic emissions
- - Atmospheric components
- - Xenon and neon
- - Oxygen and neon
- - Atmosphere mix
- - Oxygen and nitrogen
- - Some are inert
- - Butane and methane, for two
- - Atmospheric makeup
- - Some are noble
- - Atmospheric mix
- - Such as neon, oxygen
- - Neon, argon and butane
- - Atmosphere makeup
- - Radon and krypton
- - Neon and nitrogen
- - Such as neon, hydrogen
- - What Boyle's Law applies to
- - Xenon and krypton, for two
- - Argon and krypton, at room temperature
- - Radon and ozone
- - They may be noble
- - Avulsed "Malodorous Lethal ......"
- - Hydrogen and helium
- - Krypton and others
- - Neon and hydrogen
- - Krypton and methane
- - Fills (up)
- - Argon and xenon, for two
- - Argon and neon, for two
- - Neon and xenon, for two
- - Neon and others
- - Oxygen and helium, for instance
- - Krypton and oxygen
- - Hydrogen and oxygen, e.g.
- - Helium and hydrogen
- - Helium and neon
- - Some may be noble
- - They're exhausted
- - Atmospheric particles
- - They can cause tears or laughter
- - Tanks (up)
- - Krypton and xenon, e.g.
- - Starry makeup
- - Krypton and oxygen, e.g.
- - Argon and xenon, e.g.
- - Some cause laughter
- - Exhausts, say
- - Aerostatics subject
- - Amorphous space fillers
- - Terrific times, slangily
- - Neon and freon
- - Argon and krypton, for two
- - Argon and krypton
- - 38 Down et al.
- - Talks nonsensically, in slang
- - Neon and butane
- - Hydrogen and oxygen
- - Krypton and such
- - Krypton and xenon
- - Methane and hydrogen e.g.
- - Talks too much
- - Rare
- - See 50-Across
- - Noble
- - Fluorine & chlorine
- - Hydrogen and methane, etc
- - Fumes, vapours
- [ Edit ]
- [ Other definitions ]