Calcium reacts with water to form calcium hydroxide, Ca(OH)2\text{Ca(OH)}_2Ca(OH)2, and hydrogen, H2\text{H}_2H2, according to the following equation:
Ca(s)+2H2O(l)→Ca(OH)2(aq/s)+H2(g) \text{Ca(s)} + 2\text{H}_2\text{O(l)} \rightarrow \text{Ca(OH)}_2\text{(aq/s)} + \text{H}_2\text{(g)} Ca(s)+2H2O(l)→Ca(OH)2(aq/s)+H2(g)Describe two things that would be seen when a small piece of calcium is added to a beaker of cold water.
Practise Edexcel GCSE Chemistry Obtaining and using metals with exam-style questions for Foundation and Higher tier. 100 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.