S & P Block ElementsAlkali Metals396Choose the best answerPotassium is stored:AUnder cold waterBIn liquid ammoniaCIn alcoholDIn kerosene Like 0 Discuss 0Share
StoichiometryNumber of Atoms in a Given Mass397Choose the best answerWhich 1 g sample contains the greatest number of atoms?ANiBCaCN₂DB Like 0 Discuss 0Share
Fundamental Concepts of ChemistryPhysical Changes398Choose the best answerA physical change is one in which:AChemical composition changesBPhysical state or another physical property may changeCNew chemical substances are always formedDChemical bonds must always be broken Like 0 Discuss 0Share
Chemical BondingPolar Covalent Bond399Choose the best answerThe H–F bond is best classified as:APolar covalentBNon-polar covalentCπ bondDCoordinate covalent Like 0 Discuss 0Share
Fundamental Principles of Organic ChemistryOrganic and Inorganic Carbon Compounds400Choose the best answerWhich set contains only inorganic carbon compounds?ACO₂, CO and carbonatesBCH₄, C₂H₆ and C₆H₆CCH₃OH, CH₃COOH and HCHODCCl₄, CHCl₃ and CH₃Cl Like 0 Discuss 0Share