Chemistry 0620 · IGCSE · Physical and chemical changes

Physical and chemical changes — practice question

Copper(II) nitrate and zinc carbonate are each heated strongly in separate test-tubes. Which row shows the gases formed?

  • ACopper(II) nitrate: oxygen and nitrogen dioxide; zinc carbonate: carbon dioxide only
  • BCopper(II) nitrate: oxygen and nitrogen dioxide; zinc carbonate: carbon dioxide and oxygen
  • CCopper(II) nitrate: nitrogen dioxide only; zinc carbonate: carbon dioxide and oxygen
  • DCopper(II) nitrate: nitrogen dioxide only; zinc carbonate: carbon dioxide only

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