1. Mass & Volume Lab In your lab notebooks, complete the following: In your lab notebooks, complete the following: Problem Statement/Research Question Problem Statement/Research Question Give a prediction for your experiment Give a prediction for your experiment Experimental Design Diagram: Experimental Design Diagram: Identify the IV, Levels, and trials in format outlined on the handout Identify the IV, Levels, and trials in format outlined on the handout Identify the DV for your experiment Identify the DV for your experiment State what things you will attempt to keep constant during your tests. State what things you will attempt to keep constant during your tests. Experimental Method Experimental Method List/bullet steps needed to measure your independent and dependent variables. List/bullet steps needed to measure your independent and dependent variables.

2. Mass & Volume Lab Data Collection (take notes as you conduct the experiment) Data Collection (take notes as you conduct the experiment) Collect quantitative data in an appropriate table Collect quantitative data in an appropriate table Qualitative data underneath your table: Qualitative data underneath your table: Notes on procedural steps, materials actually used for measuring mass & volume of assigned objects. Notes on procedural steps, materials actually used for measuring mass & volume of assigned objects. Relevant Observations made during data collection Relevant Observations made during data collection Record data up front when done… Record data up front when done…

3. Mass & Volume Results Share data with groups who studied the same metal (i.e. orange metal, shiny metal) by posting information on the paper @ central lab station. Share data with groups who studied the same metal (i.e. orange metal, shiny metal) by posting information on the paper @ central lab station. Using a computer, plot all points (so we have more trials). Using a computer, plot all points (so we have more trials). Whiteboard a sketch of your plot. If you notice a trend, draw it! Whiteboard a sketch of your plot. If you notice a trend, draw it! Sketch graphs = label units on axes, sketch points or trends (you do not need #’s on axes) Sketch graphs = label units on axes, sketch points or trends (you do not need #’s on axes)

4. Mass & Volume Post-Lab Using a computer, plot class data for your metal type (orange or shiny). Using a computer, plot class data for your metal type (orange or shiny). Get a line of best fit Get a line of best fit Whiteboard a sketch of your plot. Whiteboard a sketch of your plot. Sketch graphs = label units on axes, sketch in data points or trends (you do not need #’s on axes, points don’t need to be exact) Sketch graphs = label units on axes, sketch in data points or trends (you do not need #’s on axes, points don’t need to be exact) Line of best fit Line of best fit i.e. relax there perfectionists! i.e. relax there perfectionists!

5. Graph Info for Labs: In Notebooks: In Notebooks: Sketch the graph (title, labeled axes, general trend shown) Sketch the graph (title, labeled axes, general trend shown) Write equation describing linear fit (substitute appropriate variables and include units for slope and y- intercept) Write equation describing linear fit (substitute appropriate variables and include units for slope and y- intercept) For Lab Report: For Lab Report: Autoscale graph from Zero (0,0 origin) Autoscale graph from Zero (0,0 origin) Check point protectors in graph options Check point protectors in graph options Uncheck connect points in graph options Uncheck connect points in graph options Copy and paste graph to a Word Document and Save Copy and paste graph to a Word Document and Save

6. Linear equations for Scientific plots: 1.Start with generic y = m x + b 2.Replace y, and x with chemistry variables from the graph axes; replace m and b with values from analysis of graph for slope and intercept. What are numbers missing? What are numbers missing? Add Units!!! Add Units!!!

7. Linear equations for Scientific plots: 3.Decide if b (y-intercept) is significant: 5% Test: 5% Test: (Y-max = largest y value from data table) (Y-max = largest y value from data table) Rule: if intercept is less than 5% of max Y value, the intercept is negligible and you may drop it from the equation; Rule: if intercept is less than 5% of max Y value, the intercept is negligible and you may drop it from the equation; if intercept is greater than 5% of max Y value, it is significant and you must keep it as part of the final equation. if intercept is greater than 5% of max Y value, it is significant and you must keep it as part of the final equation. 4.Write the final equation of the line

8. Mass & Volume Reports Problem Statement Problem Statement Complete all sections Complete all sections Experimental Design section: Experimental Design section: Include materials. Include materials. Labeled apparatus sketch Labeled apparatus sketch Detailed procedures, as developed and used by your group (include any refinements) Detailed procedures, as developed and used by your group (include any refinements)

9. Mass & Volume Reports Data Collection: Data Collection: Include Quantitative data you took as a group (RAW data). Include Quantitative data you took as a group (RAW data). Include Qualitative data Include Qualitative data Use titles and headings! (include units) Use titles and headings! (include units) Precision will be checked for. Precision will be checked for. Data Processing (Graph) Data Processing (Graph) Graph class data of only your metal (not both) Graph class data of only your metal (not both) Line of best fit Line of best fit 4 step process for writing equation (including 5% test). Include equation in data section and discuss it in the conclusion. 4 step process for writing equation (including 5% test). Include equation in data section and discuss it in the conclusion. % error calculation % error calculation

10. Mass & Volume Reports Conclusion Conclusion Make conclusions based on results. (i.e. what trend does the graph show? What relationship exists? How was it modeled?) Make conclusions based on results. (i.e. what trend does the graph show? What relationship exists? How was it modeled?) Explanation/Justification: What does the slope of the line mean? What is it called? Was your slope value too high? Too low? Explain! Explanation/Justification: What does the slope of the line mean? What is it called? Was your slope value too high? Too low? Explain!

11. Mass & Volume Reports Evaluation (very important!) Evaluation (very important!) Procedure – what went well? Poorly? Be critical of your procedures. Procedure – what went well? Poorly? Be critical of your procedures. Apparatus and materials. Were they appropriate? What would be better? Apparatus and materials. Were they appropriate? What would be better? How could these things be improved to better the experiment? How could these things be improved to better the experiment?