Weldon STEM High School Standard Chemistry 2010-2011 Course Description: The chemistry course encourages students to investigate of the structure of matter along with chemical reactions and the conservation of energy in these reactions. Inquiry and project based activities are applied to the study of the transformation, composition, structure, and properties of substances. Chemistry can be useful in helping students satisfy their curiosity about why things work, preparing them for career opportunities (even those outside of science), and producing generally informed citizens. This course does not have an North Carolina End-of-Course test. Pacing (Time) Objectiv e# Course Objective Essential Questions (samples) Resources / Ideas Goal 1 Specify dates! Ex: Aug. 10 State the Objectiv e Number from the NC Standar d Course of Study. Goal 1 Page 1 List the specific objective(s) from the NC Standard Course of Study to be taught in the lesson. Enduring understanding – there should only be 1 or 2 per unit and it does not change from day to day. Include a variety of materials (textbook, Secondary readings, magazines, Internet, human resources, Study Island, SAS/ curriculum pathways; supplemental materials) The learner will develop abilities necessary to do and understand scientific inquiry. (This goal will be used throughout the entire semester) DRAFT 3/7/2016 1.01 August 9September 3 Page 2 Design, conduct and analyze investigations to answer questions related to chemistry. Indentify question and suggest hypotheses. Indentify variables. Use a control when appropriate. Select and use appropriate measurement tools. Collect and organize data in tables, charts and graphs. Analyze and interpret data. Explain observations. Make inferences and predictions. Explain the relationship between evidence and explanation. Indentify how scientist share findings. How can I appropriately share my findings with other scientist? Primary Resource: Chemistry Modeling Curriculum http://modeling.asu.edu/participants/participant.html Measurement of mass standard unit of mass, unit conversions, use of balance – scientific notation Mass and change Lab Mass of steel wool (compacted vs expanded) Mass of heated steel wool Mass of ice and water Mass of a precipitate Mass of dissolved sugar Mass of dissolved Alka-Seltzer Volume Lab What is volume and how is it measured? Compare units of volume Calculate volume of water in container, measure with grad cyl. Graph volume in mL vs volume in cm3 DRAFT 3/7/2016 1.02 Analyze reports of scientific investigations from an informed scientifically-literate viewpoint including considerations of: Appropriate sample. Adequacy of experimental controls Replication of findings Alternative interpretations of the data 1.03 Analyze experimental design with regard to safety and use safe procedures in laboratory investigations: Identify and avoid potential safety hazards given a scenario. Differentiate between safe and unsafe procedures. Use information from the MSDS (Material Safety Data Sheets) to assess chemical hazards. Page 3 DRAFT 3/7/2016 The learner will build an understanding of the structure and properties of matter. Goal 2 (August 9September 3) 2.04 Identify substances using their physical properties: Melting points Boiling points Density How can I identify an unknown substance? Mass, Volume, and Density Lab Relationship between mass and volume measure mass & volume of different samples of two different materials (Al and Fe) Density of solids and liquids – characteristic property Density of a gas Activity Dissolve Alka-Seltzer in water, collect gas by water displacement 2.01 (This objectiv e will e address ed through out the semeste r) August 27 Page 4 Analyze the historical development of the current atomic theory. Early contributions: Democritus and Dalton. The discovery of the electron: Thoomson and Milikan. The discovery of the nucleus, proton, and neutron: Rutherford and Chadwick. The Bohr Model. the quantum mechanical model Ti-weekly Assessment DRAFT 3/7/2016 2.05 September 7 - 17 Analyze the basic assumptions of kinetic molecular theory and its applications: Combined Gas Law What evidence can I find that defends the Kinetic molecular theory? Characteristics of gases, liquids and solids, Kinetic energy & temperature Demo/discussion: diffusion of gases Demo/discussion: diffusion of dyes in hot and cold liquids Kinetic energy (Ek)- depends on mass and velocity Demo: Thermal expansion of liquids Heat water and alcohol in tubes with capillaries to amplify expansion PVTn lab Part 1 – Pressure vs. volume. Use pressure sensor to record pressure at various volumes, plot P vs V, linearize to show inverse relationship Part 2- Pressure vs. number. Record pressure at 10 mL, open syringe to atmosphere, change volume of air in syringe (and thus # of particles), reconnect syringe to pressure sensor, restore volume to 10 mL and record pressure. Plot P vs. n. Part 3 – Pressure vs. temperature. Immerse flask with pressure sensor in water baths ranging from boiling water down to freezing water. Record pressures, plot P vs T. Extrapolate line to find absolute zero. PVTn problems Use factors to convert P, V, n or T at one set of conditions to another. Explain effects in terms of motion of particles. Page 5 DRAFT 3/7/2016 2.08 September 20-27 Icy Hot Lab Record temperature of ice until solid has melted, warmed to 100˚C, then boiled for 3 minutes. Plot T vs. time, describe what occurs physically and energetically in all three regions of the graph. Assess the dynamics of physical equilibria. Interpret phase diagrams Factors that affect phase changes September 23-1/2 day The learner will build an understanding of energy changes in chemistry. Goal 4 4.02 Analyze the law of conservation of energy, energy transformation, and various forms of energy involved in chemical and physical processes. Differentiate between heat and temperature 4.03 September 17 Page 6 Analyze the relationship between entropy and disorder in the universe. How can I distinguish between the random motion of particles and disorder in the universe? New Energy Accounts Activities Introduce energy bar charts to keep track of how system stores energy during phase changes and of exchanges between system and surroundings Interaction energy (Ei) – attractions between particles Chemical energy (Ech) – attractions between the smaller particles that make up “compound particles” (unit 4) Tri-Weekly Assessment DRAFT 3/7/2016 4.02 Analyze the law of conservation of energy, energy transformation, and various forms of energy involved in chemical and physical processes. How can I illustrate the changes in states of matter? Quantitative treatment of energy (heat of fusion, vaporization) After students have solid conceptual foundation of energy storage and transfer, they learn to calculate how much energy is involved in change. Analyze heating and cooling curves Calorimerty, heat of fusion and heat of vaporization calculations. Endothermic and exothermic processes including interpretation of potential energy. Diagrams (energy vs reaction pathway), enthalpy and activation energy. 4.03 2.02 September 28-October 8 Page 7 Analyze the relationship between entropy and disorder in the universe. Examine the nature of atomic structure. Subatomic particles: protons, neutrons, and electrons. mass number atomic number isotopes How can I use elements to form new products? DRAFT Evidence for electrical charge in particles Sticky-Tape Lab Students examine attractions and repulsions between charged pieces of tape and other materials. Observations are the basis for a model of the atom with a positive inner core and mobile, negatively charged electrons. 3/7/2016 2.03 Apply the language and symbols of chemistry. Name compounds using the IUPAC conventions. Write formulas of simple compounds from their names. Evidence for compound particles video/demo Electrolysis of water Water, a pure substance, can be broken down into two different pure substances which combine in a fixed ratio. Conductivity demo/discussion Conductivity of solution of ionic vs molecular solids Nomenclature and formulas Describing the reason that exists for different naming conventions. 2.04 Identify substances using their physical properties: Pure substances vs mixtures Discussion Compare cooling curves/boiling curves for pure substances and mixtures Melting point Boiling point Density Pure substances are atomic, ionic or molecular Explain observed behavior (mp, conductivity of melt and solutions) in terms of basic unit of structure October 8 Goal 3 Page 8 Tri-Weekly Assessment The learner will build an understanding of regularities in chemistry. DRAFT 3/7/2016 3.02 October 1225 October 11Teacher Workday Apply the mole concept, Avogadro’s number and conversion factors to chemical calculations. Particles to moles Mass to Moles Volume of a gas to moles Empirical and molecular formulas percent composition How can I employ Counting particles too small to see Avogadro’s Counting by weighing number in my study of “Count” molecules in a jar, grains of sand in a sample by chemistry? weighing sample Avogadro’s Hypothesis & relative mass Combining volumes of gases Relative mass, counting by massing Find mass of equal quantities of various kinds of hardware, compare masses to lightest item, determine relative mass of each piece. Perform calculations to find the mass equivalent to a very large number of pieces. October 28 ½ day The mole concept notes and practice problems Molar mass , mass mole particles calculations Molar masses in Periodic Table based on relative masses Practice using factors to convert g moles and back again Empirical and molecular formulas Empirical formula lab Use varying amounts of Zn in xs HCl, find moles Cl moles Zn ratio Compare to accepted formula from nomenclature rules Empirical and molecular formula problems Per cent composition problems Page 9 DRAFT 3/7/2016 October 29 Tri-Weekly Assessment Goal 5 The learner will develop an understanding of chemical reactions. 5.02 November 1-5 5.01 Evaluate the Law of Conservation of Matter. Write and balance formulas and equations. Write net ionic equations. Evaluate the various types of chemical reactions. Analyze reactions by types: single replacement, double replacement, decomposition, synthesis, and combustion including simple hydrocarbons. Predict products. 5.03 Page 10 How can I defend the law of conservation of matter? How can I distinguish between the different types of chemical reactions? Representing chemical reactions (Activity) Making products from reactants Given unbalanced equations, use colored disks to represent atoms in molecules of reactants. Rearrange the “atoms” to form product molecules – no “leftovers”. Write in coefficients to balance the equation. Balancing chemical equations practice Relating equations to descriptions of reactions Lab: Types of chemical reactions Students observe and categorize several kinds of chemical change, then learn to generalize to wider group of reactions (Lab: Types of chemical reactions Students observe and categorize several kinds of chemical change, then learn to generalize to wider group of reactions) Identify and predict the indicators of chemical change: Formation of a precipitate Evolution of a gas Color changes Absorption or release of heat. DRAFT 3/7/2016 4.02 Analyze the law of conservation of energy, energy transformation, and various forms of energy involved in chemical and physical processes. Endothermic and exothermic processes including interpretation of potential energy. Energy effects in chemical reactions Using Energy Bar charts to represent energy transformations in chemical processes Bonds do not “store energy.” Separating atoms in molecules (or ions in a lattice) always requires energy. When atoms combine, energy is released. Chemical energy is the storage mode for interactions between atoms or ions. 5.04 Identify the physical and chemical behaviors of acids and bases. General properties of acids and bases Concentration and dilution of acids and bases Ionization and the degree of dissociation (strengths) of acids and bases. Indicators acid-base titrations pH and pOH Page 11 DRAFT 3/7/2016 5.05 Analyze oxidation/reduction reactions with regard to the transfer of electrons. Assign oxidation numbers to elements in REDOX reactions Identify the elements oxidized and reduced Write simple half reactions Assess the practical applications of oxidation and reduction reactions 5.06 Assess the factors that affect rates of chemical reactions. The nature of the reactants temperature concentration surface area catalyst Page 12 DRAFT 3/7/2016 days November 8-18 3.03 November 11 Holiday Calculate quantitative relationships in chemical reactions (stoichiometry). Moles of each species in a reaction. Mass of each species in a reaction Volumes of gaseous species in a reaction. How can I predict the amount product to be formed in a chemical reaction? Quantifying change using mole ratios Fe-CuCl2 lab Replacement reaction in which Fe is xs reactant. Mole ratio enables students to write a balanced equation to describe the reaction. Mole ratios – BCA table Students write before, change and after beneath balanced equation to predict mole ratios based on coefficients. Primacy of working with moles is emphasized. Further practice involving mass, % yield and limiting reactants Cu-AgNO3 lab (Video/Power Point Presentation) Replacement reaction in which Cu is xs reactant. Silver obtained in this lab is converted back to AgNO3 and then to AgCl in subsequent lab 2.05 Analyze the basic assumptions of kinetic molecular theory and its applications: Partial pressure Pressure of each gas in a mixture proportional to the number of particles of that gas. Ideal Gas Equation Dalton’s Law of Partial Pressures 3.02 Molar volume of a gas lab React Mg with HCl, collect H2 over water, determine volume of a mole of H2 gas. Apply the mole concept, Avogadro’s number and conversion factors to chemical calculations. Molarity of solutions Page 13 DRAFT 3/7/2016 November 19 Tri-Weekly Assessment 3.01 November 22-30 Analyze periodic trends in chemical properties and use the periodic table to predict properties of elements. Atomic and Ionic Radii Straw Activity Students will create a visual representation of the size of atomic and ionic radii by comparing them to the height of straws that symbolize elements on the periodic table Ionization Energy Graphs Students will create a graph that compares the relationships between elements in the same group & period and their ionization energies. Groups (families) Periods Representative Elements Electron configuration and energy levels Ionization energy atomic and ionic radii electronegativity 2.07 Assess covalent bonding in molecular compounds as related to molecular geometry and chemical and physical properties. Hog Hilton Students will learn how to complete electron configurations by comparing electrons to “lazy” hogs being place in a hotel, which the students manage and create room assignments based upon certain rules What types of models can I assemble to represent compounds? Molecular Macromolecular Hydrogen bonding and other intermolecular forces (dipole/dipole interaction, dipersion) VSEPR theory Page 14 DRAFT 3/7/2016 4.01 4.04 Analyze the Bohr model in terms of electron energies in the hydrogen atom. The spectrum of electromagnetic energy. Emmisions and absorption of electromagnetic energy as electrons change energy levels. Analyze nuclear energy. Radioactivity: characteristics of alpha, beta, and gamma radiation Decay equations for alpha and beta emission Half-life Fission and fusion How can I use the electromagnetic spectrum? Electromagnetic and Bohr Model practice Student practice reading the electromagnetic spectrum and the Bohr hydrogen model How can I recognize nuclear energy and its formation? Nuclear Reaction Notes Students will be given notes that describe why nuclear equations happen Decay Equations and Half-Life Practice Students will practice working decay equations and halflife equations, predicting products formed or types of nuclear radiation to be given off December 1-10 Review of all goals and objectives December 13-17 Final Exam Week Page 15 Electromagnetic Spectrum and Bohr Model notes Students will be taught how the electromagnetic spectrum and Bohr hydrogen model are used DRAFT 3/7/2016