Fundamental Concepts of ChemistryDiffusion6Choose the best answerThe spontaneous mixing and spreading of particles is called:AEvaporationBSublimationCDiffusionDBoiling Like 0 Discuss 0Share
Fundamental Concepts of ChemistryStates of Matter7Choose the best answerAccording to the source framing, the liquid state of matter is:AThe least common of the three ordinary physical statesBAlways the most dense stateCMore common than all gasesDAlways the most common state Like 0 Discuss 0Share
Fundamental Concepts of ChemistryChemical Changes8Choose the best answerWhich is an example of a chemical change?ABoiling of waterBBurning of paperCEvaporation of waterDMelting of ice Like 0 Discuss 0Share
Fundamental Concepts of ChemistryAtoms and Molecules9Choose the best answerWhich phrase is scientifically acceptable?AA molecule of a compoundBA molecule of an elementCAn atom of an elementDAll of these Like 0 Discuss 0Share
Fundamental Concepts of ChemistryPure Substances10Choose 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