1. Mass & Volume Lab: Measuring Volume
Take out a piece of paper. Write the DQ: How does the volume of a substance relate to its mass?
Go to the lab stations
Discuss at least two ways to measure the volume of the metal cylinders at your lab station
Record notes on your paper.

2. Mass & Volume Lab
Causal Question: How do measures of mass and volume relate to one another?

3. Mass & Volume Lab On your paper, complete the following:
Problem Statement/Research Question
Give a prediction for your experiment (graph)
Experimental Design
Identify the IV and Levels
Identify the DV for your experiment
State what things you will attempt to keep constant during your tests.
Experimental Method
List/bullet steps needed to measure your independent and dependent variables.

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

5. Mass & Volume Post-Lab
Using Logger Pro, Excel or a graphing calculator, plot class data for your metal type (orange or shiny).
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)
Write the equation of the line (curve) with correct variables and units
i.e. relax there perfectionists!

6. Graph Info for Labs: On your paper: For Lab Report:
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)
For Lab Report:
Autoscale graph from Zero (0,0 origin)
Check point protectors in graph options
Uncheck connect points in graph options
Copy and paste graph to a Word Document and Save

7. Linear equations for Scientific plots:
Start with generic y = m x + b
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 the numbers missing?
Add Units!!!

8. Linear equations for Scientific plots:
Decide if b (y-intercept) is significant:
5% Test:
(Y-max = largest y value from data table)
Rule: if intercept is less than or = 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.
Write the final equation of the line

9. Mass & Volume Report Data Collection: Data Processing
Include Quantitative data you took as a group (RAW data).
Include Qualitative data
Use titles and headings! (include units and uncertainty)
Precision will be checked for.
Data Processing
Table with class data (indicated in title) for your metal only
Graph class data of only your metal (not both)
Line of best fit
Include equation under the graph and discuss it in the conclusion.
% error calculation

10. Mass & Volume Report Conclusion
Make conclusions based on results. (i.e. what trend does the graph show? What relationship exist?)
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 Report
Evaluation (very important!) – make two paragraphs following the conclusions
Identify the limitations of the procedures and materials
Discuss how these limitations affect the results
How could these things be improved to better the experiment?