Fundamental Concepts of ChemistryChemical Changes16Choose 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 ChemistryPhase Changes17Choose the best answerConversion of a liquid into a solid is called:ABoilingBSublimationCFreezingDVaporization Like 0 Discuss 0Share
Fundamental Concepts of ChemistryChemical Changes18Choose 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 Compounds19Choose the best answerWhich of the following is NOT an element?ADiamondBGraphiteCSilicaDOzone Like 0 Discuss 0Share
Fundamental Concepts of ChemistryChemical Changes20Choose the best answerBurning a cigarette is an example of:APhysical changeBChemical changeCReversible changeDNone of these Like 0 Discuss 0Share