What is a pure substance?, A. Matter with different compositions throughout, B. A mixture of different materials, C. Matter with a fixed chemical composition, D. Matter that has no mass, Which of the following is an element?, A. Water, B. Table salt, C. Gold, D. Methane, Which of the following is a compound?, A. Iron, B. Copper, C. Oxygen, D. Carbon Dioxide, Why is carbon dioxide (CO₂) a compound?, A. It contains only carbon atoms., B. It contains carbon and oxygen chemically combined., C. It is a metal., D. It is a mixture of gases., Which statement is TRUE?, A. All pure substances are elements., B. Compounds contain only one kind of atom., C. Elements and compounds are both pure substances., D. Elements are made up of different compounds.

Elements Vs Compounds

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