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Chemistry College Prep Pacing Guide
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Two-week summary of major instructional content and skills • 36 instructional weeks
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Week(s)Unit / TextMajor ContentMajor Skills and Assessments
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Weeks 1–2Unit 1: Introduction to ChemistryWelcome Back (3d); Lab Basics: Safety and Equipment / Introduction to CER (3d); Experimental Design (2d); Measurement (2d)Introduce chemistry; explain accuracy vs. precision and why both matter; identify constants, independent and dependent variables in an investigation; use standard units and calculate averages and percent error.
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Weeks 3–4Unit 1: Introduction to ChemistrySignificant Figures (2d); Experimental Design (3d); Dimensional Analysis (3d); Scientific Notation (2d)Apply significant-figure rules; design and conduct experiments using appropriate safety/equipment, precise measurement and graphical analysis; organize and interpret data and draw conclusions; convert temperature/units with dimensional analysis and conversion factors; convert standard and scientific notation.
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Weeks 5–6Unit 1: Introduction to ChemistryDimensional Analysis / Scientific Notation (2d); Classification of Matter (2d); Properties of Matter (3d); Review (2d); Summative Assessment (2d)Convert between standard and scientific notation; classify elements, compounds, homogeneous mixtures and heterogeneous mixtures; distinguish compounds from mixtures; create a matter-classification visual; distinguish extensive/intensive and physical/chemical properties; review and complete the summative assessment.
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Weeks 7–8Unit 2: The AtomAtomic Theory (2d); Atomic Structure (2d); The Periodic Table (3d); History of Atom (Redo) (2d); Subatomic Particle (2d)Compare plum-pudding, nuclear, Bohr and electron-cloud/quantum models; sketch the current atom and label its main parts, subatomic particles and charges; explain the electron cloud and forces holding the atom together; connect atomic theory to evidence-based scientific discovery; identify protons, neutrons and electrons and their locations.
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Weeks 9–10Unit 2: The AtomIsotopes & Average Atomic Mass (3d); Atomic Number vs. Mass Number (1d); Bohr Model & Energy Levels (2d); Electromagnetic Spectrum (1d); Quantum Model & Orbitals (2d)Calculate average atomic mass from isotopic data; distinguish atomic number, mass number and notation; explain electron energy levels and transitions; relate energy, frequency and wavelength; describe s, p, d and f orbitals; complete the embedded quiz.
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Weeks 11–12Unit 2: The Atom → Unit 3: Chemical Bonding & Molecular StructureElectron Configurations I & II (3d); Unit Review (1d); Unit Test; Intro to Bonding Types (1d); Ionic Bonding Basics (2d); Properties of Ionic Compounds (1d); Covalent Bonding Basics (1d); Lewis Dot Structures I (1d)Write electron configurations, including noble-gas notation; review and assess atomic structure/electron configurations; distinguish ionic, covalent and metallic bonds; explain ionic compound formation and relate ionic structure to properties; describe covalent electron sharing; draw Lewis structures for simple molecules.
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Weeks 13–14Unit 3: Chemical Bonding & Molecular StructureLewis Dot Structures II (1d); Quiz #1 – Bond Types & Lewis Structures (1d); VSEPR Theory & Molecular Geometry (2d); Polarity of Bonds & Molecules (1d); Intermolecular Forces (2d); Metallic Bonding & Alloys (2d)Draw Lewis structures for polyatomic ions and expanded octets; evaluate bond-type/Lewis understanding; predict molecular shapes with VSEPR; determine bond and molecular polarity from electronegativity and shape; identify intermolecular forces and their effect on properties; explain metallic bonding and metal properties.
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Weeks 15–16Unit 3: Chemical Bonding & Molecular StructureEnergy in Bond Formation & Breaking (1d); Quiz #2 – Molecular Shape & Polarity (2d); Unit Review (2d); Unit Test – Bonding & Structure (1d); Go Over the Test (1d); Dimensional Analysis / Counting Lab (3d)Explain energy changes during bond making/breaking; check mastery of VSEPR, polarity and intermolecular forces; synthesize bonding concepts for the unit test; review test results; revisit the significance of dimensional analysis through the counting lab.
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Weeks 17–18Unit 3: Chemical Bonding & Molecular StructureMath in Chemistry (4d); PT Trends Activity (6d)Review the mathematics needed for the upcoming mole unit; revisit the periodic table and periodic trends.
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Weeks 19–20Unit 4: MoleThe Mole: Chemistry’s Counting Unit (2d); Counting Particles to Mole (2d); Atomic Mass and Isotopes (2d); Lesson 4.4 (2d); Molar Mass (1d)Explain the mole and relate it to Avogadro’s number; convert particles and moles using dimensional analysis; calculate average atomic mass from isotopic abundance; calculate molar mass from formulas/the periodic table; convert between mass and moles using molar mass.
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Weeks 21–22Unit 4: MoleMass–Mole Conversions (2d); Percent Composition from Formula (1d); Percent Composition of a Compound (1d); Percent Composition from Data (2d); Empirical Formula Calculation (2d)Perform multi-step mass–mole–particle conversions; determine percent composition from formulas and collected mass data; analyze experimental mass data; determine empirical formulas from mass or percent data using simplest whole-number mole ratios.
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Weeks 23–24Unit 4: MoleEmpirical Formula and Combustion Data (2d); Molecular Formula Calculation (2d); Finish Calculations and Review (2d); Review (2d); Test (2d)Determine empirical formulas from combustion data; determine molecular formulas from empirical formulas and molar mass; apply mole-based calculations to quantitative scenarios using symbolic chemical representations; review and complete the unit test.
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Weeks 25–26Unit 5: NomenclatureIntroduction to Chemical Nomenclature (1.5d); Naming Binary Ionic Compounds (1.5d); Multivalent Metals (2d); Binary Molecular Compounds (2d); Mixed Practice/Review (2d); Test (2d)Distinguish ionic and molecular compounds and interpret symbols/subscripts; explain standardized naming; name/write binary ionic compounds by balancing charges and using -ide; determine multivalent-metal charges and use Roman numerals; name/write molecular compounds with prefixes; choose the correct naming rules in mixed practice; test and review.
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Weeks 27–28Unit 6: Chemical ReactionsIntro to Reactions & Word Equations (1d); Skeleton Equations (2d); Balancing Equations (2d); Types of Reactions & Writing Equations (2d); Introduction to Hydrates (5d)Identify evidence of reaction, reactants and products; write word and skeleton equations using correct formulas; apply conservation of mass and balance with coefficients; identify synthesis, decomposition, single-replacement, double-replacement and combustion reactions, predict simple products, and write/balance equations; define, name and write formulas for hydrates/anhydrates.
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Weeks 29–30Unit 7: StoichiometryIntro to Stoichiometry (2d); Review Balancing (1d); Mole Ratios (1d); Mole-to-Mole (1d); Practice (1d); Molar Mass Review (1d); Mole-to-Mass (1d); Mass-to-Mole (1d)Explain how stoichiometry uses balanced equations; balance equations using conservation of mass; use mole ratios from balanced equations; solve mole-to-mole problems with increasing independence; use molar mass as a conversion factor; convert between moles and grams across substances.
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Weeks 31–32Unit 7: StoichiometryMass-to-Mass Stoichiometry (3d); Mass-to-Mass Practice (2d); Mixed Stoichiometry: Mole and Mass (2d)Calculate grams of product/reactant from grams of another substance; use a lab to determine a hydrate formula; solve mass-to-mass problems independently; choose the appropriate stoichiometry pathway based on given units.
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Weeks 33–34Unit 7: StoichiometryStoichiometry with Particles (2d); Gas Volume at STP (2d); Mixed Mass/Particles/Volume (2d); Quiz & Error Analysis (1d); Intro to Limiting Reactants (2d)Use Avogadro’s number in stoichiometry; use 22.4 L/mol for gases at STP; solve mixed problems involving grams, moles, particles and liters; analyze and correct common errors; explain limiting reactants and why one reactant runs out first.
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Weeks 35–36Unit 7: StoichiometryLimiting Reactants from Moles; Limiting Reactants from Grams; Excess Reactant Left Over; Limiting Reactant Practice (8d total)Determine the limiting reactant from moles or grams of two reactants; calculate the amount of excess reactant remaining; solve limiting-reactant problems with and without excess reactant remaining.
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