Basic Concepts of ChemistryMatter and its Classification1Choose the best answerWhich type of matter can have variable composition?AA pure substanceBAn elementCBoth homogeneous and heterogeneous mixturesDA compound Like 0 Discuss 0Share
Basic Concepts of ChemistryMatter and its Classification2Choose the best answerWhat is a pure substance?AA substance made of two or more componentsBA substance with fixed composition and distinct propertiesCA mixture of different substancesDA substance that can be separated by physical methods Like 0 Discuss 0Share