Lesson Slideshow Section 01
Unit Summary Section 02
Key Concepts
Ionic Lattice, VSEPR Theory, Resonance, Bond Enthalpy, Polar vs Non-polar Bonds
Assessment Objectives
Describe bond types, Predict molecular geometry, Compare melting points of structures
Prior Knowledge Needed
Valence electrons, Lewis structures, electronegativity (S3.1)
IB Syllabus Reference
S2.1, S2.2
Interactive Study Guide
Click here to view the full, detailed topic summary for this unit.
29
Cu
63.546
Video Lesson Section 03
Video Instruction
5 Lessons Available
Covalent Bonding and Properties of Covalent Compounds
IB Chem 1 Paper Chromatography
Intermolecular Forces
Ionic Bonding and Properties of Ionic Compounds
Lewis Structures_VSEPR Theory_Metallic Bonding and Alloys
Practice Quiz Section 04 · Interactive
10
Ne
20.180
Vocabulary Review Section 05
Ionic Bond
Electrostatic attraction between oppositely charged ions formed by electron transfer.
Covalent Bond
Electrostatic attraction between a shared pair of electrons and the nuclei of both atoms.
Metallic Bond
Electrostatic attraction between a lattice of positive metal ions and delocalized 'sea' of electrons.
VSEPR Theory
Model used to predict the geometry of molecules based on minimizing electron repulsion.
Intermolecular Force
The forces of attraction or repulsion which act between neighboring molecules.
Dipole-Dipole
Attraction between the positive end of one polar molecule and the negative end of another.
Hydrogen Bond
Strong dipole-dipole attraction when H is bonded directly to N, O, or F.
London Dispersion Forces
Temporary dipole-induced dipole attractions found between all molecules.
Polarity
The distribution of electrical charge over a molecule or bond ($dipole$).
Octet Rule
The tendency of atoms to prefer to have eight electrons in their valence shell.
Coordinate Covalent Bond
A covalent bond where both electrons in the shared pair come from the same atom.
Resonance
The use of multiple Lewis structures to represent a single molecule with delocalized electrons.
Giant Covalent Structure
A massive lattice of atoms held together by covalent bonds ($e.g. \text{diamond, silica}$).
Allotrope
Different structural forms of the same element in the same physical state ($e.g. \text{graphite vs diamond}$).
Bond Enthalpy
The average energy required to break one mole of a specific bond in gaseous molecules.
26
Fe
55.845
Revision Notes Section 06
79
Au
196.967
Practice Tests Section 07
17
Cl
35.45
Worksheets & Labs Section 08