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).
Practise OCR GCSE Chemistry The particle model with exam-style questions for Foundation and Higher tier. 41 questions, matched to the OCR GCSE Chemistry (J248) specification and written in Paper 1 and Paper 2 (Foundation Tier) or Paper 3 and Paper 4 (Higher Tier) 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.