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Unit 4: Ionic Bonding
Guiding Questions:
- What is that?
- How do we figure out what the chemical formula is?
- What does it mean to be "free of chemicals"?
What you should learn:
Unit outline
- Chemical formulas can be predicted from the periodic table and allow chemists to classify and predict properties of compounds
- The general trend in the universe to strive for lower energy explains and allows for prediction of chemical properties of elements
- Elements combine in whole number ratios and these molar ratios can be used to determine chemical formulas
More Specifically...:
- Ion Formation
- Define and give the general trends on the periodic table for
- a. Ionization energy
- c. Atomic radius / Ion radius
- d. Electron affinity
- e. Reactivity
- Define shielding effect and use it to explain trends in families
- Define effective nuclear charge and use it to explain trends in periods
- Predict location on periodic table given ionization energy data
- State that the noble gas configuration is the most stable electron configuration
- Describe energy changes as elements combine to form an ionic compound
- Predict oxidation states for various elements based on their proximity to a noble gas in the periodic table
- Write electron configurations and orbital diagrams of ions
- Bonding Model
- Use physical and chemical properties to distinguish between ionic and covalent compounds
- Describe ionic bonding as the transfer of electrons and the formation of a crystal lattice due to electrostatic attraction between ions of opposite charge
- Predict the formation of cations and anions based on placement on periodic table
- Relate formation of anion or cation with ionization energy and electron affinity
- State that bonding occurs to increase stability
- Contrast metallic and ionic bonding
- Nomenclature and formulas
- Learn the names and formulae of common anions and cations, including carbonate, sulfate, nitrate, hydroxide, phosphate, and ammonium
- Write chemical formulas for ionic compounds given
- a. Name of compound or
- b. A pair of ions
- Identify polyatomic ions
- Classify compounds as being ionic or covalent.
- Name ionic compounds using stock system (Roman numerals)
- Math
- Calculate molecular mass
- Use dimension analysis to convert between moles, grams, atoms, ions and molecules
Lecture Notes:
Assignments:
Labs:
Resources:
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