Fundamental Concepts of ChemistryPure Substances11Choose the best answerA pure substance is best defined as:AA substance made of two or more physically mixed componentsBA substance with fixed composition and characteristic propertiesCAny mixture of different substancesDA substance that can always be separated physically Like 0 Discuss 0Share
Fundamental Concepts of ChemistryKinetic Energy and States of Matter12Choose the best answerIn which state of matter do particles generally possess the greatest average kinetic energy when compared at their usual corresponding physical conditions?AGaseous stateBSolid stateCLiquid stateDAll states always have equal kinetic energy Like 0 Discuss 0Share
Fundamental Concepts of ChemistryPhysical Changes13Choose the best answerWhich of the following is a physical change?ARusting of ironBSouring of milkCDigestion of foodDSublimation of camphor Like 0 Discuss 0Share
Fundamental Concepts of ChemistryChemical Changes14Choose the best answerWhich is an example of a chemical change?AMelting of iceBSwitching on a bulbCCutting fruit into piecesDRusting of iron Like 0 Discuss 0Share
Fundamental Concepts of ChemistryProperties of Compounds15Choose the best answerWhen elements X, Y and Z chemically combine to form compound XYZ, the properties of XYZ are generally:ALike those of X and YBLike those of Y and ZCDifferent from those of X, Y and ZDSimilar to both X and Y Like 0 Discuss 0Share