Fundamental Concepts of ChemistryChemical Changes1Choose the best answerWhich is a characteristic of a chemical change?AFormation of one or more new substancesBNo energy change can occurCChemical composition remains unchangedDOnly the physical state changes Like 0 Discuss 0Share
Fundamental Concepts of ChemistryChemical Changes2Choose the best answerA chemical change results in:ALoss of matterBFormation of a solution onlyCChange of physical state onlyDFormation of one or more new substances Like 0 Discuss 0Share
Fundamental Concepts of ChemistryElements and Compounds3Choose the best answerWhich of the following is NOT an element?ADiamondBGraphiteCSilicaDOzone Like 0 Discuss 0Share
Fundamental Concepts of ChemistryChemical Changes4Choose the best answerBurning a cigarette is an example of:APhysical changeBChemical changeCReversible changeDNone of these Like 0 Discuss 0Share
Fundamental Concepts of ChemistryChemical Changes5Choose the best answerWhich of the following is a chemical change?AMelting of iceBDigestion of foodCFreezing of waterDCrushing of stone Like 0 Discuss 0Share