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Exam (elaborations)

Chemistry As Level OCR Revision
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4

May 2024

2023/2024

A+
109.5 - What is the bond angle of a central atom with 4 electron pairs and no lone pairs, in degrees? 2.5 - How much degrees does it go down by each time you add a lone pair to a central atom with 4 electron pairs? 2+ ions. - What ions do Group 2 elements form? 2NaOH(aq) + Cl2(aq)= NaClO(aq) + NaCl(aq) + H20(l) - What is the equation to produce bleach? Including state symbols? A difference in charge between two atoms caused by a shift in electron density in the bond. - What is a dipo...
alice200
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OCR A-Level Chemistry Bundled Exams with complete solution | everything you need
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10

July 2023
OCR A-Level Chemistry Bundled Exams with complete solution | everything you need
Brainarium
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Exam (elaborations)

Chemistry As Level OCR | 52 Questions and Answers with complete solution
Available in bundle

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5

July 2023

2022/2023

A+
Available in bundle
Atomic Radius, Nuclear Charge, Electron Shielding - What are the 3 things that affect first ionisation energy? Increase. More protons- stronger attraction. Not much extra shielding. - What is the general trend in ionisation energy across periods? And why? Decrease due to increased attraction between electrons and nucleus. - What is the trend in atomic radius across a period? Increase due to metallic bonds getting stronger. - What is the trend in boiling points across metals? Silicon. Stro...
Brainarium
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