What is the correct observation when a small piece of barium metal is added to an excess of cold water?
Forms a white precipitate only
Forms a colourless solution and effervesces
Forms a white precipitate and effervesces
Forms a colourless solution only
10 exam-style questions on AQA A Level Chemistry Group 2, the alkaline earth metals, covering Group 2, the alkaline earth metals. Each one has a worked solution and a mark scheme showing where the marks go.