Chemistry Honors and College Prep Balanced Science Chemistry Honors and College Prep 3.1

Day 1: NECAP Practice The question you see here is a typical question found on the NECAP test that asks you to select the most correct answer. Be prepared to discuss your choices. Which of these compounds has the largest percent by mass of nitrogen?        N2O NO NO2 N2O3 N2O4

Day 2: Scientific Method Practice: Writing an Introduction You’re the Chemist! The following small-scale activities allow you to develop your own procedures and analyze the results. Design It! Design an experiment that will determine the number of atoms of calcium, carbon, and oxygen it takes to write your name on the chalkboard with a piece of chalk. Assume chalk is 100 percent calcium carbonate, CaCO3.

Day 3: Scientific Method Practice: Feedback on Introduction 5 Exceeds Standard 4 Meets 3.5 Nearly Meets 3 Below 2 Little Progress Toward Standard You have met standard and additionally included. You have . . . You have. . . Introduction Weight = Score x 5 An extended explanation or discussion of content including examples. Written a clear purpose or problem statement Explained the purpose statement Discussed the content as it relates to the topic Connected the purpose to the content Used relevant vocabulary If applicable . . . Written an informed prediction Justified the prediction with prior knowledge Written a clear purpose statement Discussed the content Used relevant vocabulary If applicable. . . Either explained the purpose s or discussed the content Used some relevant vocabulary Written an informed predictions Either justified the prediction or discussed the content Written a prediction

Day 4: Scientific Method Practice: Creating or Interpreting graphs The table below gives the molar mass and density of seven gases at STP. 1. Plot these data, with density on the x-axis. 2. What is the slope of the straight-line plot? 3. What is the molar mass of a gas at STP that has a density of 1.10 g/L? 4. A mole of a gas at STP has a mass of 56.0 g. Use the graph to determine its density.

Day 5: Scientific Method Practice: Data and Analysis Feedback Exceeds Standard 4 Meets 3.5 Nearly Meets 3 Below 2 Little Progress Toward Standard Data and Analysis Weight = Score x 5 A detailed summary of all of the data A discussion of the trends that includes examples from the data Titled and labeled the tables, charts, and drawings Explained the tables/charts/or diagrams in a caption Included detailed and precise observations Summarized the data with detail Identified trends or patterns in the data If applicable. . . Included units and calculations for measurements Included graphs, with proper title/labels/units. Caption is incomplete or inaccurate Summarized the data with some detail Included graphs, with either title or labels missing Missed writing a caption for the data Included general observations Identified some trends or patterns in the data Included calculations for measurements (not units) Missed some titles and labels on tables, charts and drawings Provided a general summary of data Identified incorrect trends or patterns in the data Included incorrect calculations for measurements Included incorrect graphs, with either title or labels missing

Day 6: Scientific Writing – Critical Thinking Using your Writing in Science Rubric; Explain the relationship between percent composition, empirical formulas and molecular formulas.

Little Progress Toward Standard Day 7: Scientific Writing – Critical Thinking Feedback 4 Exceeds Standard 3 Meets Standard 2 Below Standard 1 Little Progress Toward Standard -Explanation uses appropriate scientific vocabulary. -Explanation includes examples to explain the relationships within the content and application of that content. -The student demonstrates a thorough understanding of the science of the task. No errors or omissions are present in the response. - Explanation uses appropriate scientific vocabulary. -Explanation includes examples to explain the relationships within the content. -The student demonstrates a thorough understanding of the science of the task. The response may contain minor errors that do not detract from the demonstration of understanding. -Basic definition with some correct scientific vocabulary. -Answer connected to relevant content. -The student has provided a response that demonstrates a general understanding of the science of the task. -Answer attempted with basic definition -The student has provided a response that is only partially correct. No work submitted or incorrect answer.