Complete the table using ticks (√) to indicate whether the sign of each type of energy change, under standard conditions, is always positive, always negative or could be either positive or negative. [Table with columns: 'energy change', 'always positive', 'always negative', 'either positive or negative' and rows: 'electron affinity', 'enthalpy change of atomisation', 'ionisation energy', 'lattice energy']

Q: What topic does this question test?

This question tests Chemical energetics in A-Level Chemistry (syllabus code 9701). It is worth 10 marks.

Q: Which exam paper is this question from?

This question appeared in the Cambridge A-Level Chemistry Feb/Mar 2017 examination, Paper 4 Variant 2 (9701_m17_qp_42.pdf).

Question

Complete the table using ticks (√) to indicate whether the sign of each type of energy change, under standard conditions, is always positive, always negative or could be either positive or negative. [Table with columns: 'energy change', 'always positive', 'always negative', 'either positive or negative' and rows: 'electron affinity', 'enthalpy change of atomisation', 'ionisation energy', 'lattice energy']

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