←Elements, compounds and mixtures
From Paper 3, Higher
Explain why polymers such as poly(ethene) are solid at room temperature.
From Paper 3, Higher
Explain the limitations of the particle model of states of matter.
From Paper 3, Higher
Describe how sodium and chlorine atoms form an ionic compound. You may use dot-and-cross diagrams.
From Paper 3, Higher
Explain why sodium chloride has a high melting point and conducts electricity when molten but not when solid.
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This paper is written by Plasmo in the style of the OCR GCSE Chemistry exam. It is not a past paper and is not produced or endorsed by the exam board.