Crossword clues for Reaction. 8 letters:REACTIONFeedback, for exampleREACTIONChange in a beaker, e.g.REACTIONKnee jerk, e.g.REACTIONCounter tendency.REACTIONChemical change, or rhenium + actinium + titanium + oxygen + nitrogen?REACTIONResponseREACTIONChange in a labREACTIONStimulus aftermathREACTIONSpit take, e.g.REACTIONDouble takeREACTIONChemical change.REACTIONButton on a Facebook postREACTIONBacklash, for exampleREACTIONChem lab eventREACTIONResponse to a stimulusREACTIONSomething you may read on a [first word of 121 Across], or have from reading a [second word of 121 Across], or see by reading [full answer to 121 Across]RESPONSEReaction.RADICALSReaction-prone atomsHOWNOVELReaction to the unexpectedALLERGENReaction causerCHEMICALLike many reactionsSPITTAKEComedic reaction involving a sprayed beverageRESPONDSGives one's reactionROADRAGEExtreme reaction to trafficDOMINOESChain-reaction piecesBACKLASHSharp reactionHYSTERIAMad-mad-world reaction.HYSTERIAMass reaction, perhapsBACKLASHViolent reactionALLERGICLike some reactionsBACKLASHVoter reaction of sortsICYSTAREReaction to an insult, maybeICYSTARECold reactionKNEEJERKType of reactionVISCERALLike gut reactionsWERERICHReaction to suddenly becoming flush?INSTINCTGut reactionSPITTAKEDrinker's comedic reactionALLERGICKind of reactionKNEEJERKInvoluntary reactionKNEEJERKKind of reactionACIDBASEKind of reaction involving "proton donors" and "proton acceptors"ACIDBASEKind of chemical reaction that often produces a salt and waterHYSTERIACommon crowd reaction in monster filmsGOODPUTTPositive green reactionROADRAGEViolent reaction to trafficCATALYSTReaction facilitatorEMOTICONWell-punctuated reactionSPITTAKESlapstick reactionHOTTAKESQuick, provocative reactions, as to current news