Describe two visual observations you would make when a spatula of black copper(II) oxide powder is added to, and stirred with, an excess of warm dilute sulfuric acid in a beaker.
Practise Edexcel GCSE Chemistry Acids with exam-style questions for Foundation and Higher tier. 276 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
