Measuring The Density Of Pennies Lab Report

To begin with, pennies aren't the only coins that cost too much to make. According to Jeff Sommer, who wrote the article “Penny Wise,or 2.4 Cents foolish?” he states “Each

This experiment was performed to determine the difference in density between pre-1982 pennies and post-1982 pennies. In addition, we were given an unknown substance and our task was to configure what it was through calculating its volume,mass, and density. Furthermore, we were being introduced to the procedures of displacement in this experiment as well. All together, we were given the task of finding out why there was a difference in density between the two pennies. My partner, Michael Sapawa, and I first had to measure the mass of both pennies using a scale. Then we calculated the volume of the samples with graduated cylinders through the method known as displacement. We then applied our schema and drew out the formula for density, which

This experiment was performed to observe differences in density based on the chemical makeup of an object. Pennies minted before 1982, pennies minted after 1982, and an unknown metal sample was tested to see if there were any differences in their densities. Ten pennies from each category and the metal sample were weighed using a scale to find mass and the displacement method was used to find their volumes. The masses and volumes were then used to calculate the densities of the pennies (D=m/v). The density of the pre-1982 pennies were 8.6 g/mL while the post-1982 pennies were 6.9 g/mL. The metal sample’s density was 1.7 g/mL. Following the experiment we were given the real densities of each item to calculate the percent error with the formula

Plautus once said “You have to spend money to make money,” a quote made painfully true by the penny, a coin worth 1/100th of a dollar. The penny’s story starts in 1792 with the first U.S. Mint which produced the dime, quarter, nickel, penny and half penny which we will get back to later. Pennies were originally made of 100% copper, however, as prices of copper rose they soon started to make pennies out of 95% zinc and 3% copper, which is how they are made today. Soon after this, the raw material of pennies began to cost more than the penny itself was worth, therefore people began to melt them down and sell the material for profit. When this occurred, instead of the government getting rid of the pennies all together and being happy citizens where removing them from circulation they made melting the currency down illegal and continued producing 4 billion pennies a year! You can find these tiny useless coins anywhere from in your couch cushion to on the sidewalk. The reason we should stop minting pennies is that they cost money, waste time, are bad for the environment, and they are useless.

Pennies are made of copper, and when copper gets exposed to oxygen for a long

How many pennies do you have just lying around the house, not being used? I can answer that, TOO MANY! The use of pennies should be discontinued in the United States. Pennies are more trouble than they are worth, literally. They are costing the United States more money than they are even worth.

First of all, the penny costs way too much money to make. The US Mint makes 7 billion pennies per year for more than $100 million dollars. Instead of wasting money like this, we could use this money for other things like the army. We can use this money to defeat our enemies. Pennies are made of copper and zinc which are two metals that are really costly. These metals are so costly that if

The penny is barely used in the united states. The penny is often refused as change in transactions(Sommer). They are not wanted for change because of the low value. They are also commonly put in jars and consequently forgotten around the house(Sommer). Pennies easily forgotten due to the limited amount of opportunities to use them. Getting rid of the forgotten and useless pennies will have them sent to charities to give them money, and then later put them into

Summary: Each penny had individual measurements taken. The 1984 penny had more mass than the 2012 penny, which was interesting to discover because the gold coloring added mass to the penny. In addition, all of the pennies stayed relatively the same in terms of mass, the hundredths place. The weight difference shows that the pennies’ mass changed during the changes. Finally, the “gold” penny had the largest density. The “silver” penny had the second largest density, and the “copper” penny had the least largest density. The changes of the penny added density and mass each time. With the information, it appears that the mass increased by .03 after each change.

Record the number of drops placed on the penny until it overflowed each time onto a table as shown below.

First, the U.S. Mint is still exploring additional designs, more cost efficient, and more metal composition for the penny(Source 4). In fact, they have modified it over the years starting from 1857 to today. In 1857 it was immense, larger than today’s quarter, then, in 1909 U.S. Mint produced the Lincoln penny(Source 4). After that, the bronze coin is part of our language. For instance, it offers us a variety of phrases throughout time such as “a penny for our thoughts” or “penny candy”(Source 4).

Over the recent years, there has been an argument in the US whether pennies should no longer be manufactured. In some places, the pennies have already stop making the pennies, and have started rounding to the nearest multiple of 5. We should still keep the pennies, since it has been part of the US history for long, it has expanded our culture, and it is cheaper to make compared to the nickel.

One reason for the penny to be eliminated from the U.S. economy is how much it costs to produce. The one-cent coin actually costs more to produce than what its originally worth. Copper, is the material the coin is made from which is very expensive. According to Source 1, “In the United States, the mint says, each zinc and copper coin costs 2.41 cents to produce and distribute” (p.1). This example shows the amount the penny costs to make. It costs an extra dollar and

Pennies have been in circulation since 1787. They have traveled all over the world throughout these years changing from different hands and different pockets. Even though the penny has been helpful, it has the smallest currency and is used the least and is the reason to diminish it.

Going through thousands of years, the manufacturing of coins (minting/coining/coinage) have been one of the most polished product of mankind. One of the earliest recorded standardized coins was made by the Roman Empire, consisting of gold, silver and bronze. Now in the modern age, coins are made with alloys (solids made up of a base metal and other elements), with the exception of bullion coins which are made up of precious metal (Gold, palladium, platinum and silver) and kept as a store of value or an investment, instead of day-to-day use.