Calcium is an element. It is a solid at room temperature.
Solid calcium cannot be compressed. Why?
Solid calcium cannot flow, but liquid calcium can flow. Explain why.
Calcium gas completely fills any container it is put in. Explain why.
Calcium reacts with water. Calcium hydroxide, Ca(OH)2\text{Ca(OH)}_2Ca(OH)2, and hydrogen, H2\text{H}_2H2, are made. Write a balanced symbol equation for this reaction.
Calcium nitrate has the formula Ca(NO3)2\text{Ca(NO}_3)_2Ca(NO3)2. Calculate the relative formula mass of calcium nitrate. (Use relative atomic masses: Ca=40.1\text{Ca} = 40.1Ca=40.1, N=14.0\text{N} = 14.0N=14.0, O=16.0\text{O} = 16.0O=16.0).
27 exam-style questions on OCR GCSE Chemistry The particle model. Each one has a worked solution and a mark scheme showing where the marks go.