Periodic Table Question Cambridge IGCSE O level Chemistry 0620 0971 5070 Lesson 55 part e

9 The Periodic Table
9.1 The Periodic Table
Core
•• Describe the Periodic Table as a method of
classifying elements and its use to predict
properties of elements
9.2 Periodic trends
Core
•• Describe the change from metallic to nonmetallic
character across a period
Supplement
•• Describe and explain the relationship between
group number, number of outer-shell electrons
and metallic/non-metallic character
9.3 Group properties
Core
•• Describe lithium, sodium and potassium in
Group I as a collection of relatively soft metals
showing a trend in melting point, density and
reaction with water
•• Predict the properties of other elements in
Group I, given data, where appropriate
•• Describe the halogens, chlorine, bromine and
iodine in Group VII, as a collection of diatomic
non-metals showing a trend in colour and density
and state their reaction with other halide ions
•• Predict the properties of other elements in
Group VII, given data where appropriate
Supplement
•• Identify trends in groups, given information
about the elements concerned
9.4 Transition elements
Core
•• Describe the transition elements as a collection
of metals having high densities, high melting
points and forming coloured compounds, and
which, as elements and compounds, often act as
catalysts
Supplement
•• Know that transition elements have variable
oxidation states
Cambridge IGCSE (9–1) Chemistry 0971 syllabus for 2022. Subject content
9.5 Noble gases
Core
•• Describe the noble gases, in Group VIII or 0, as
being unreactive, monoatomic gases and explain
this in terms of electronic structure
•• State the uses of the noble gases in providing an
inert atmosphere, i.e. argon in lamps, helium for
filling balloons