Essay On Penny Lab

Adding copper pennies to the vase helps preserve the flower and help it live longer. A copper penny could be used as an antibacterial agent. It helps the flower stay alive longer because the copper prevents the fungi from growing in the inside, which could kill the flower. The help of the penny copper means that there will be none or limited fungi which is one factor why the flower could die faster.

Traveling from the U.S. mint into the hands, pockets, and wallets of citizens, ultimately, pennies will develop a dirty look due to daily interactions with their surroundings. In recent years, many have discovered possible solutions to restore the original shine of copper pennies. In order to determine what solution most effectively sterilizes our common pocket money, it is crucial to understand what makes pennies dull in the first place and what can counter this reaction. Over time, pennies receive a dark coating, creating a dull appearance.

Pennies cost more than they 're worth, and the United States should cease production to due this fact. According to Source #1, the U.S. penny costs 2.41 cents to produce one penny. That 's is over two times of what it can pay for. In 2011, the governments taxpayers lost $60.2 million on the production and distribution of pennies. The year prior— 2010— taxpayers lost $27.4 million, and in 2009, they lost $19.8 million (Source #1).

Have you ever wondered how pennies have changed over the years? The penny has undergone several design changes, and composition changes – some pennies are made purely of copper, some have nickel, tin and zinc. If we

In the Penny Boat Lab, we made a boat to hold pennies in water. First, we collected materials we needed which were scissors, a ruler, water, pennies, aluminum foil, a triple beam balance and a container. Using the ruler, we measured the foil 15cm by 15cm, then cut excess pieces. Next, we had to fold the foil into a “boat”. After, we measured the mass of our boat using the triple beam balance.

Pennies are rarely made of copper anymore, but instead, mainly zinc. In his “Ban the Penny” article, Mark Lewis recognizes the penny argument and states “But the penny has its fans, especially in Tennessee, which is rich in zinc.” (Source A). Tennessee makes

Our lab was about alchemy; we used alchemy to turn our pennies into gold. For our results we noticed that our pennies first turned silver after we took them off the hot plate. Then we rinsed them with water and waved one penny at a time through the Bunsen burner where we noticed our penny turned gold and a little rainbow. I believe that we made silver and gold because the end results of our pennies were gold. After completing this lab our pennies turned silver because of the zinc and the zinc chloride.

The percent recovery of the copper was calculated using the equation, percent recovery = (the mass of the copper recovered after all the chemical reactions/the initial mass of the copper) x 100. The amount of copper that was recovered was 0.32 grams and the initial mass of the copper was 0.46 grams. Using the equation, (0.32 grams/0.46 grams) x 100 equaled 69.56%. The amount of copper recovered was slightly over two-thirds of the initial amount.

Throughout history the penny has changed in various ways by its composition, color, weight, ect. The first penny was in 1787 and was made of 100% copper and was like that until the 1800’s and then in the 1815 none of these coins were minted because there was not enough copper since there was a war in 1812 with Great Britain. Then in 1856 something called the Flying Eagle was made and it’s known because it was when the penny composition changed to 88% copper and 12% nickel. Then after the Civil War in 1864 the composition changed again to 95% copper and 5% zinc. Dollar coins back then were auctioned at 10 million because of its components: 90% silver and 10% copper.

Don’t you hate when your taxes go to making useless pennies or when they take up space in a mess. Even though people think pennies are helpful they are not because they cost 2.41 to make just one. For years the Unites States have been discussing if we should get rid of the penny. Pennies shouldn’t be made in the United States. Source 1 states, other countries have got rid of the penny and were successful.

The penny costs more than it is worth. Millions of dollars are going to waste into producing them and it can just add the money up. The cost of producing and distributing one pennie is 2.4 cents(Sommer). Every penny that is made, taxpayers lose money.

The zinc will form a new compound with the sulfate, and the copper will stay as a metal. Balanced Chemical

Twenty-five pieces of zinc and copper (Fifty total, each about 3.5-4 cm

. Nickel Nickel contains of combination with sulfur and iron ores . this metal are recent and have led to introduction of nickel in steel manufacturing , coin production and electro plating of metal object Biological activity of nickel it has an impotent role in microorganisms and plants . nickel presence in many enzymes can be considered as essential trace element , although some health authorities question this assumption Human exposure nickel has concentrations range from 4 to 80 ppm in soil vary according to geology input .

It is considered a life-saving mineral by the united nations as it is both of biologic and public health importance. Natural levels of zinc without human influence typically ranges between 10 and 300mg/kg in soil, rock and rivers, and has an average of 70mg/kg in the Earth’s crust. Certain locations have high concentrations of zinc due to the natural process of erosion that transports zinc to such areas, as well as the influence of human activities that propagate its release to the environment www.zinc.org/environment/. For instance, activities like mining, the use of zinc in industry, and its application in agriculture and medicine (24). Environments that have either too low or very high concentrations of zinc have detrimental effects to living organisms.