Your Name: ___________________________________ Role:______________

Lab Partners: ________________Role:_____ ________________Role:_____

Problem: How can properties of matter help to determine value of coins?

Hypothesis: _______________________________________________________

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Materials:

        balance         15 cm ruler         10 pennies
        graph paper

Caution: (no special concerns)

Procedure:

1. Using the balance, determine the mass of 1 penny, 2 pennies, 3 pennies, 4 pennies, 6 pennies, 8 pennies and 10 pennies to the nearest 0.001 g. Record the masses in the data section.

2. Measure the thickness of 1 penny, 2 pennies, 3 pennies, 4 pennies, 6 pennies, 8 pennies and 10 pennies to the nearest 0.1 mm. Record these values in the data section.

3. On graph paper, make two line graphs using the data in the data section. On the first graph, show the number of coins compared to the mass of the coins. On the second graph, show the number of coins compared to the thickness of the coins. Draw a straight line from zero to the last data point. Be sure to place the independent and dependent variables on the correct axes, label each axis including units, use a uniform scale that maximizes the size of the graph (at least 3/4 of the page) and title the graph.

Observations:

Data:

Diagram:

Conclusion: _______________________________________________________

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Questions:

1. Could you use the mass of 1 penny to calculate the masses of 2,3,4,6,8 and 10 pennies? Why or why not?

2. Does your data show a difference in the mass or thickness of individual pennies?

3. How does this difference appear on the graph?

4. Using your graphs, what would be the mass and thickness of 37 pennies?

Answers: