Welcome to the JAHS Chemistry I Wiki. The course outline below has links to pages containing class notes, useful links, study guides, reviews, etc. Go to this version if you want to see Pennsylvania State Eligible Content (Standards) codes. Or download the PA Department of Education state assessments for Physical Science:

Unit 1: Introduction and Laboratory Safetychem lab.jpeg
  1. Course introduction: fields and uses for chemistry
  2. Classroom tour of lab safety devices
  3. Review of Rules, Safety Contract
  4. General Equipment usage and care: see this online quiz.

Unit 2: Descriptive Chemistry
  1. Ancient uses of chemistry
  2. Observations: qualitative vs. quantitative; direct vs. indirect
  3. Classification of matterancients.jpeg
  4. physical versus chemical properties
  5. Discovery of metals and alloys: properties of metals and nonmetals
  6. Greek philosophers to the end of Alchemy
  7. The Scientific Method
  8. Modern Research: Peer Review

Unit 3: Measurement and Uncertaintymeasure.jpeg
  1. base units and prefixes
  2. metric system conversions
  3. English-metric conversions
  4. accuracy versus precision
  5. proper measurement
  6. significant figures
  7. calculations using significant figures

Unit 4: Discovery of Atomic Structurenucleus.jpeg
  1. Dalton's Atomic Theory (Democritus was first!)
  2. Discovering electricity, radiation, and isotopes
  3. J. J. Thomson and electrons: his CRT, plum pudding model
  4. Rutherford and his gold foil experiment
  5. Bohr and his planetary model, emission theory
  6. The nucleus: atomic symbols
  7. Modern atomic structure

Unit 5: Radioactivityatomic.jpeg
  1. A brief history
  2. radiation
  3. alpha particle decay
  4. half-life
  5. radon detection
  6. fission and fusion
  7. nuclear power, weapons, and safety: Chernobyl and Three Mile Island (also at wikipedia)
  8. uses for radioactive elements

Unit 6: The Electronic Structure of the Elementsspectra.jpeg
  1. the wave-particle theory and quantization
  2. predictions using electronic structure:

Unit 7: The Ionic Bondsalts.jpeg
  1. ionic compound nomenclature
  2. crystalline structures
  3. hydrates
  4. solubility of ionic compounds
  5. ionic compounds in chemical reactions (double replacement)
    • how to write and balance a chemical equation
  6. predicting products of double replacement reactions:
    • precipitate reactions
    • acid-base reactions
  7. precipitate and titration reactions

Unit 8: Periodic Trendstrends.jpeg
  1. chemical activity
  2. atomic radius
  3. electronegativity trends
  4. ionization energy (oxidation) and electron affinity (reduction)

Unit 9: Covalent Bondingcovalent.jpeg
  1. covalent compound nomenclature
  2. Lewis diagrams and a view into combustion reactions
  3. VSEPR and 3D models of compounds - a look at
  4. Polarity of bonds
  5. intermolecular forces - relating structure to physical properties
  6. solubility of covalent compounds

Unit 10: Gases
  1. Phlogiston Theory
  2. the Kinetic Molecular Theory
  3. pressure and temperature units, conversions
  4. Boyle's, Charles' and Avogadro's Laws
  5. the Ideal Gas Law
  6. Dalton's Law of Partial Pressures

Unit 11: Chemical Reactionsreaction.jpeg
  1. combustion reactions
  2. synthesis reactions
  3. decomposition reactions

Unit 12: Chemical Formulasmole.jpeg
  1. formula weights
  2. percent composition (decomposition reactions)
  3. empirical formulas

Unit 13: The Mole unit
  1. Avogadro's Number
  2. mass to mole to number of conversions
  3. solution concentrations

Unit 14: Stoichiometry
  1. mole ratios in chemical formulas and equationsstoich.jpeg
  2. using mass conversions with the mole ratio
  3. using stoichiometry to determine:
    • theoretical yields (thus percent yields) - synthesis reactions
    • limiting reactants (thus excess reactants)
  4. solution and gas stoichiometry
  5. practice problems in stoichiometry

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