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Unit 5: Covalent Bonding
Guiding Questions:
- How are shapes of molecules determined?
- How are chemical formulas for covalently bonded compounds determined?
What you should learn:
Unit outline
- The shape of a molecule can be used to predict the properties of that molecule.
- The shape of a molecule is determined by the electron arrangement of the atoms that make up the molecule
More Specifically...:
- Bonding Model
- Use physical and chemical properties to distinguish between ionic, covalent and metallic compounds
- Describe a metalling bond and the properties that result
- Define covalent bonding as a bond in which electrons are shared
- Define and give the general trends on the periodic table for electronegativity
- Use electronegitivity difference to distinguish between polar and non-polar bonds
- Draw Lewis structures for covalent compounds including resonance structures
- Use the VSEPR (Valence Shell Electron Pair Repulsion) model to predict the geometric shape of simple molecules and polyatomic ions
- a. bent, linear, trigonal planar, tetrahedral, and trigonal pyramidal
- Construct models of molecules and polyatomic ions to illustrate their predicted geometric shapes
- Predict the polarity of molecules by using the VSEPR model for molecules containing polar covalent bonds
- Nomenclature and formulas
- Distinguish between empirical, molecular, and structural formulas
- Name covalent compounds using the greek prefix system of mono, di, tri etc.
- Write chemical formulas given the name of a compound
- Choose the appropriate naming rules for a given chemical formula
- Write the chemical formulas for certain common substances, such as ammonia, water, carbon monoxide, carbon dioxide, sulfur dioxide, and carbon tetraflouride.
- Math
- Calculate percent composition
- Determine empirical and molecular formulas from experimental data
Lecture Notes:
Assignments:
Labs:
- Molecular Modeling Lab
- Hydrate Lab
- Measuring Moles Lab
- Evaporation Rates Lab
Resources:
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