SAT II Lesson presentation_reactions, stoich and gases

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Course Calendar : Course Calendar SAT II PREP

Topics Covered : Topics Covered SAT II PREP Structure of Matter 25% Atomic structure ? Molecular structure ? Bonding ? States of matter 16% Gases ? Liquids & solids ? Solutions ? Reaction types 14% Acids & bases ? Oxidation-reduction ? Precipitation ? Stoichiometry 14% Molec concept ? Chemical equations ? Equilibrium & Reaction rates 5% Equilibrium systems ? Rates of reactions ? Thermochemistry ? 6% Descriptive chemistry ? 12% Laboratory ? 8%

Lesson 6 Chemical Reactions & Stoichiometry : Lesson 6 Chemical Reactions & Stoichiometry SAT II PREP Key terms Molecular weight Compounds Molar mass Formula weight Mole Law of constant composition Empirical formula Molecular formula Percent composition Combination reaction Decomposition reaction Single displacement reaction Double displacement reaction Neutralization reaction Net ionic equation Balanced equation Law of conservation of mass Limiting reactant Percent yield W o r d s 2 k n o w

Lesson 6 Chemical Reactions & Stoichiometry : SAT II PREP Concept Map Molecule Lesson 6 Chemical Reactions & Stoichiometry Molecular weight Compounds Molar mass Mole Law of constant composition Empirical formula Molecular formula Percent composition Combination Decomposition Single Displacement Double Displacement Neutralization Net Ionic equation Balanced equation Law of conservation of mass Limiting reactant Percent yield Chemical reactions types of reactions stoichiometry Formula weight

Lesson 6 Chemical Reactions & Stoichiometry : SAT II PREP Key concepts and skills Know how to calculate the molar mass of a compound. Be able to convert between moles, molar mass and mass. Be able to distinguish between empirical and molecular formulas. Be able to determine the molecular formula of a substance when given its empirical formula and molecular weight. Be able to calculate the percent composition of elements in a compound. Be able to determine the empirical and molecular formula of a compound from its % comp data and its molecular weight. Be able to identify common types of chemical reactions. Be able to do these things. Lesson 6 Chemical Reactions & Stoichiometry Be able to balance chemical equations. Be able to perform stoichiometric calculations to determine amounts of products or reactants in a chemical reaction. Be able to write net ionic equations for replacement reactions.

Lesson 6 Chemical reactions and stoichiometry : Lesson 6 Chemical reactions and stoichiometry SAT II PREP Types of chemical reactions

Lesson 6 Chemical reactions and stoichiometry : Lesson 6 Chemical reactions and stoichiometry SAT II PREP Net ionic equations

Lesson 6 Chemical reactions and stoichiometry : Lesson 6 Chemical reactions and stoichiometry SAT II PREP Empirical and molecular formulas

Lesson 6 Chemical reactions and stoichiometry : Lesson 6 Chemical reactions and stoichiometry SAT II PREP % composition

Lesson 6 Chemical reactions and stoichiometry : Lesson 6 Chemical reactions and stoichiometry SAT II PREP Balancing equations

Lesson 6 Chemical reactions and stoichiometry : Lesson 6 Chemical reactions and stoichiometry SAT II PREP Stoichiometry

Lesson 6 Chemical reactions and stoichiometry : Lesson 6 Chemical reactions and stoichiometry SAT II PREP Limiting reactants

Lesson 6 Chemical reactions and stoichiometry : Lesson 6 Chemical reactions and stoichiometry SAT II PREP Limiting reactant

Lesson 6 Chemical reactions and stoichiometry : Lesson 6 Chemical reactions and stoichiometry SAT II PREP Limiting reactants

Lesson 6 Chemical reactions and stoichiometry : Lesson 6 Chemical reactions and stoichiometry SAT II PREP % Yield

Lesson 6 Chemical Reactions & Stoichiometry : SAT II PREP Lesson 6 Chemical Reactions & Stoichiometry

Lesson 7 The Gas Phase : SAT II PREP Lesson 7 The Gas Phase Gases Laws Measuring pressure Dalton’s Boyle’s Charles’ Ideal gas manometer barometer Graham’s Avogadro’s Kinetic moleculary theory P1V1 = P2V2 V1/T1 = V2/T2 Ptot = PA + PB + PC Or PA = Ptot •XA 1mole/22.4L @ STP PV = nRT Calculate density (g/L) Calculate molar mass (g/mol) Open Closed

Lesson 7 The Gas Phase : SAT II PREP Lesson 7 The Gas Phase 5 assumptions of KMT: Gase are made up of particles whose volumes are negligible compared to the container volume. Gas atoms or molecules exhibit no intermolecular attractions or repulsions. Gas particles are in continuous, random motion, undergoing collisions with other particles and with the container walls. Collisions between any two gas particles are elastic, meaning that no energy is dissipated or, equivalently, that kinetic energy is conserved. The average kinetic energy of gas particles is proportional to the absolute temperature of the gas, and is the same for all gases at given temperature.

Lesson 7 The Gas Phase : Lesson 7 The Gas Phase **remember at any given temperature the particles in a gas will be moving at different speeds.

Lesson 7 The Gas Phase : SAT II PREP Lesson 7 The Gas Phase