So if the metal was heavier it may have been more expensive to manufacture. Procedure: 1. Choose either to use Pre-1982 or Post-1983 to start the experiment. Find the mass with the weight scale and then record it onto the data table. 2. Add 5 more pennies of the same kind then record the weight again. 3. Continue to repeat step 2 until you weighed all 25 pennies on the scale. 4. Fill the 50 ml graduated cylinder to 20 ml of water. Use the meniscus to measure the water level. 5.
With the 25 pennies used before, drop 5 pennies into the water, and record he new water level. 6. Add 5 pennies again and record the new water level. 7. Repeat Step 6 8. Repeat Step 6 until all 25 the pennies are dropped into the graduated cylinder and all the volumes are recorded. 9. Dry the pennies and store them or give them to the teacher. 10. Do the same with the other set of pennies. 11. Find the net volume of both set of pennies. (Subtract 20 ml from the total volume). 12. Enter all data into specific columns.
The graph also projects that difference metals which seem similar to each other have different net volumes and masses. Conclusion: Although two metals similar in weight were used to make pennies, there are difference in many ways. For example, the net volumes seem similar but the mass of the pennies were increased each time by a different amount. My hypothesis was correct, although the metals weight were very close to one another. The metal for the pennies made before 1982 was determined as copper and the metal for the pennies made after 1983 was determined as zinc.
With this experiment, I found out different methods to find the volume of a solid just by using a measuring device and water. Using the right kind of mathematics can easily determine many different things in science. Like, for this experiment we used different types measurements to record known sets of data then we use that to find the unknowns of the equation. Then with all the blanks filled-in we could solve for the unknown. In this case it was finding what kinds of materials were used to make the two different types of pennies.