Fundamental Concepts of ChemistryChemical Changes6Choose 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 ChemistryChemical Changes7Choose the best answerBurning a matchstick is an example of:APhysical changeBChemical changeCChange in pressureDChange in colour only Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Chemical Changes8Choose the best answerWhich observation is the strongest evidence that a chemical reaction has occurred?AA substance changes its shapeBA new gas is formed during the reactionCA solid is broken into smaller piecesDSugar dissolves in water Like 0 Discuss 0Share