Fundamental Concepts of ChemistryPhysical Changes21Choose 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
Fundamental Concepts of ChemistryClassification of Elements22Choose the best answerAmong known elements, the largest number are:AMetalsBNon-metalsCMetalloidsDNone of these Like 0 Discuss 0Share
Fundamental Concepts of ChemistryPhysical Changes23Choose the best answerSolid → Gas directly, without passing through the liquid state, is called:AMeltingBBoilingCSublimationDDeposition Like 0 Discuss 0Share
Fundamental Concepts of ChemistryCompounds24Choose the best answerA compound contains:ADifferent kinds of atoms physically mixedBThe same kind of atoms physically mixedCDifferent kinds of atoms chemically combinedDOnly one kind of atom chemically combined Like 0 Discuss 0Share
Fundamental Concepts of ChemistryPhase Changes25Choose the best answerConversion of a solid into a liquid is called:AMelting or fusionBCondensationCSublimationDFreezing Like 0 Discuss 0Share