Modifiers matching oxide:

• iron,
• inorganic,
• metal,
• raw,
• acid,
• acidic,
• metallic,
• alkaline,
• refractory,
• organic,
• binary,
• soluble,
• amorphous,
• nonmagnetic,
• reactive,
• stable,
• ceramic,
• simple,
• basic,
• semiconducting,
• powdery,
• important,
• rare,
• anodic,
• common,
• active,
• synthetic,
• toxic,
• ionic,
• complex,
• nonmetal,
• precious,
• nonconducting,
• inexpensive,
• inert,
• transparent,
• polyvalent,
• single,
• coloured,
• particulate,
• colloidal,
• miscellaneous,
• powdered,
• catalytic,
• covalent,
• mixed,
• secondary,
• crystalline,
• insoluble,
• heterogeneous,
• diamagnetic,
• polycrystalline,
• opaque,
• trivalent,
• gaseous,
• elemental,
• pure,
• base,
• heavy,
• exotic,
• solid,
• molten,
• silver,
• related,
• polymeric,
• volatile,
• porous,
• hard,
• dense,
• protective,
• conductive,

Simple categories matching gaseous:

• state,
• fuel,
• acid,
• precursor,
• hydrocarbon,
• substance,
• cyanide,
• agent,
• compound,
• contamination,
• fluid,
• reactant,
• carrier,
• pollutant,
• oxide,
• anesthetic,
• alkyne,
• olefin,
• constituent,
• monomer,
• phenomenon,
• salt,
• contaminant,
• form,
• sulphide,
• impurity,
• object,
• material,
• system,
• plasma,
• chemical,
• buffer,
• mass,
• component,
• body,
• waste,
• flow,
• anaesthetic,
• alkane,
• matter,
• odor,
• medium,
• atmosphere,
• fumigant,
• mixture,
• substrate,
• molecule,