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IB Chemistry Topic S2.4 From models to materials
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Content for the new SL chemistry syllabus; first assessment 2025.
Content statements in this lecture
Structure 2.4.1—Bonding is best described as a continuum between the ionic, covalent and metallic models, and can be represented by a bonding triangle.
Structure 2.4.2—The position of a compound in the bonding triangle is determined by the relative contributions of the three bonding types to the overall bond.
Structure 2.4.3—Alloys are mixtures of a metal and other metals or non-metals. They have enhanced properties.
*Structure 2.4.4-2.4.5 are included in the organic chemistry lecture on polymerization.
Content statements in this lecture
Structure 2.4.1—Bonding is best described as a continuum between the ionic, covalent and metallic models, and can be represented by a bonding triangle.
Structure 2.4.2—The position of a compound in the bonding triangle is determined by the relative contributions of the three bonding types to the overall bond.
Structure 2.4.3—Alloys are mixtures of a metal and other metals or non-metals. They have enhanced properties.
*Structure 2.4.4-2.4.5 are included in the organic chemistry lecture on polymerization.