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Exam (elaborations)

Edexcel chemistry (A level ) QP 1 SUMMER JUNE 2026 PREDICTED PAPER

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Edexcel chemistry (A level ) QP 1 SUMMER JUNE 2026 PREDICTED PAPER

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Summer 2026 Predicted




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1 (a) The table shows the melting temperatures of some consecutive elements.



Element Melting temperature / °C


Na 98


Mg 650


Al 660


Si 1410


P 44
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(i) Explain why silicon has a much higher melting temperature than aluminium.

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,(ii) Explain why phosphorus has a much lower melting temperature than silicon




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(b) The figure shows the first ionisation energies of elements with atomic numbers

1 to 18.

(2)




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, (i) Explain why there is a decrease in first ionisation energy from beryllium to
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boron.

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(ii) Explain why there is a decrease in first ionisation energy from nitrogen to
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oxygen.

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