Chapter 7 and 8 periodicity and reactivity trends

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Chemistry

Chemical Reactions

A-Level Chemistry

OCR

Periodic Table & Energy

9th

Last updated 12:54 PM on 4/7/26
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5 Terms

1
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first ionisation energy

the energy required to remove one electron from each atom in one mole of gaseous atoms of an element

2
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periodicity

a repeating trend in properties of elements across each period

3
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metallic bonding

the electrostatic attraction between metal cations and delocalised electrons

4
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disproportionation

a redox reaction in which the same element is both oxidised and reduced

5
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precipitation reaction

a solid formed from the reaction of two aqueous solutions