Page 1 - Lesson Notes

SAI INTERNATIONAL SCHOOL
CLASS-VIII
SUBJECT-CHEMISTRY
TOPIC-Materials: Metals and Non-metals

Concept Map

Lesson Notes

Concept Mapping
 Introduction of the chapter: Materials.  Atoms.
 Molecules.
 Molecules of elements & molecules
of compounds.
 Elements and list of first 20 elements.
 Compounds.

 Metals and their physical property.  Definition of metal.
 Malleability.
 Ductility.
 Conductivity.
 Sonorous.
 Lustrous.
 Non-metals and their physical  Comparison of the physical property
property. of metals with non-metals on the
above basis.

 Atomicity.  Atomicity of elements and
compounds.

 Electronic configuration.  Electronic configuration of first 20
elements,

 Valency.  Valency of first 20 elements.

 Chemical reaction and equations.  Definition of chemical reactions,
reactants and products.
 Definition of chemical equation.
 Balanced and unbalanced chemical
equations.

 Balancing chemical equations.

 Chemical property of metals and  Reaction with oxygen.

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