Describe how sodium and chlorine atoms form an ionic compound. You may use dot-and-cross diagrams.
From Paper 9 (Chemistry), Higher
83 marks
Explain why sodium chloride has a high melting point and conducts electricity when molten but not when solid.
From Paper 9 (Chemistry), Higher
143 marks
Explain why methane has a low boiling point.
From Paper 9 (Chemistry), Higher
201 mark
Which substance has a giant covalent structure?
Score 0 / 11 · 0 of 4 marked
This paper is written by Plasmo in the style of the OCR GCSE Combined Science exam. It is not a past paper and is not produced or endorsed by the exam board.