Density Scientific Investigation
Before you begin the scientific investigation below, make sure to download the Density Scientific Investigation Report. As you complete this scientific investigation, fill in any needed information on the report template. If you need more information about each section of the report, please visit the Developmental Module.
This scientific investigation is available below or in a printable version.
Please Note: This scientific investigation’s simulation is powered by Adobe® Flash®. Please make sure that you have access to a computer or mobile device that utilizes this software.
Introduction
Density is an important physical property of matter. Scientists calculate a substance's density by dividing the substance's mass by its volume. Mass is measured using a triple-beam balance or an electronic balance. Volume is measured through water displacement or by using a ruler. An object's density determines whether or not it will float in water.
Objectives
In this scientific investigation, you will:
Hypothesis
Using the Procedure and Data Collection section below, read through the procedural information for this scientific investigation. Based on your understanding of the procedure, develop your own hypotheses, which describe your expected results. Specifically, what do you think the relationship among mass, volume, and density will be, especially if any of the components are modified? Record these hypotheses on your Density Scientific Investigation Report in the Hypothesis section.
Required Simulation
Density Simulation
(click on image below to access simulation)
Provided by: PhET Interactive Simulations
University of Colorado
http://phet.colorado.edu
Procedure and Data Collection
Part 1: Explore the Simulation
Part 2: Mystery Blocks
Data
An excerpt from the Data section of the Density Scientific Investigation Report is found below. Please make sure to complete all tables and requested data on the report itself.
Part 1: Explore the Simulation
Material |
Data Set 1 |
Data Set 2 |
Data Set 3 |
Density |
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Mass |
Volume (mL) |
Mass |
Volume (mL) |
Mass |
Volume (mL) |
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Wood |
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Ice |
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Brick |
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Aluminum |
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Once you have completed this data chart, create one graph using the three data points provided for each of the four different block materials. Create a different colored line of regression for each block. Make sure to design and label your graph correctly.
Part 2: Mystery Blocks
Block |
Block Color |
Mass of Block (g) |
Initial Volume of Pool |
Final Volume of Pool with Block (mL) |
Volume of Block (mL) |
Density of Block (g/mL) |
Identity of Block |
A |
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B |
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C |
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D |
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E |
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Data Analysis
In the Data Analysis section of your Density Scientific Investigation Report, provide responses to the following questions:
Conclusion
Using the Conclusion section of your Density Scientific Investigation Report, compose three to four sentences describing an overall conclusion about the relationship among mass, volume, and density, especially if any of these particles are added or subtracted from the atom. Were your hypotheses true or false, and how do you know? Use the data and notes that you collected from your simulation experience to form your conclusion. Make sure that you include information that you gained from data analysis to support your conclusion.
Experimental Sources of Error
On your Density Scientific Investigation Report, provide responses to the following questions: Are there any sources of error? If so, what are they, and what could be done to minimize error?
Once you have completed the Density Scientific Investigation Report, please submit your work to the dropbox.