Answer: oxide

AnswerCrossword Clue
OXIDERust or water, chemically
OXIDELime, for example
OXIDEDeuterium ... (heavy water)
OXIDENitrous ...
OXIDERust, for instance
OXIDERust, tarnish, or laughing gas
OXIDELaughing gas, e.g.
OXIDELaughing gas, for one
OXIDEZinc ...
OXIDEFerric ... (rust)
OXIDEZinc ... (healing ingredient)
OXIDERust, for example
OXIDENitrogen ...
OXIDEZinc ... (sunblock substance)
OXIDECompound such as rust, to a chemist
OXIDERust or laughing gas
OXIDEOxygen compound
OXIDEChemical compound
OXIDEIron compound
OXIDEFerric ...: rust
oxidea compound of oxygen
OXIDERust, e.g.
OXIDERust, for one
OXIDEZinc-....
OXIDECommon chemical compound
OXIDENitrous ... (laughing gas)
OXIDECompound containing the eighth element (yes, another chemistry clue)
OXIDEFerric .. (Fe203)
OXIDEZinc ... (lotion ingredient)
OXIDELime or rust
OXIDEZinc ..
OXIDECalcium .. (lime)
OXIDELime or rust, e.g.
OXIDERust, actually
OXIDEIron ..
OXIDECommon compound
OXIDERust, say
OXIDENitrous ..
OXIDECalcium ... (lime ingredient)
OXIDERust or lime