A-Level Chemistry Edexcel 9CH0

3: Redox I

#3.1

know what is meant by the term ‘oxidation number’

#3.2

be able to calculate the oxidation number of elements in compounds and ions

*The use of oxidation numbers in peroxides and metal hydrides is expected. *

#3.3

understand oxidation and reduction in terms of electron transfer and changes in oxidation number, applied to reactions of s- and p-block elements

#3.4

understand oxidation and reduction in terms of electron loss or electron gain

#3.5

know that oxidising agents gain electrons

#3.6

know that reducing agents lose electrons

#3.7

understand that a disproportionation reaction involves an element in a single species being simultaneously oxidised and reduced

#3.8

know that oxidation number is a useful concept in terms of the classification ofreactions as redox and as disproportionation

#3.9

be able to indicate the oxidation number of an element in a compound or ion, using a Roman numeral

#3.10

be able to write formulae given oxidation numbers

#3.11

understand that metals, in general, form positive ions by loss of electrons with an increase in oxidation number

#3.12

understand that non-metals, in general, form negative ions by gain of electrons with a decrease in oxidation number

#3.13

be able to write ionic half-equations and use them to construct full ionic equations

Bonding and Structure

Inorganic Chemistry and the Periodic Table