Clean Coins Lab

In my experiment, I compared if the side of a penny affected how many drops of water it can hold. I took 2 pennies, one on the head and one on the tails. I took a dropper and filled it with water. I then dropped the water onto the penny and counted how many drops of water it could hold until the water went on the paper towel. My hypothesis was that the tail side of the penny could hold more water, and it did. According to my data, the tail side average was about 1 whole drop away from the head average. This means that the tail side could hold more water. The exact average of the head side on the penny was 23 drops. The average of the tail side of the penny is 24.72727273 drops. That was super close. Although I made sure my hand was the same

Based on these results, soap and time are needed for effective hand washing. When soap was used, it got off much more of the paint than when only water was used. The paint is like germs, so more germs will wash off your hands when you use soap. The hands were significantly cleaner the longer they were washed for. When washed for the

If soap was added to the experiment, I think that they would mix because soap is what breaks the oil when washing dishes because they have around the same densities. The mixture was a heterogeneous mixture because you could see the dissimilar parts (the oil and the water). The hypothesis was correct because the oil never mixed with the water and the oil was always on top of the water. If I could do this experiment again, I would use seawater to see how the oil would react with

The coin I will be using is a copper penny and the three solutions are, Baking soda, Lemon Juice, Salt and vinegar. Coins are created by places called Mints, which means “Coin manufacturing facilities”. Denver Colorado, San Francisco, Philadelphia, and West Point are where some of the mint factories are located. The coin originated from 1787 where Benjamin Franklin wanted to add the penny into the currency system of the United States. The penny use to be called the “One cent Piece” but then later on was called the “penny”. Earlier in time of 1837 and to 1858 then pennies were made up of copper, a tiny bit of tin, and zinc. Later on it 1943 the pennies were made up of steel. Today, pennies are made up of complete Zinc. The one-cent coin equals

The soap is thick and the penny is rough. The tap water latest longer than the soapy water

During the first trial the penny held 17 drops of water. I used a dropper to put the drops of water on the penny very slowly while taking my time. In the next two trials it held 25 and 22 drops. In the last trial it held the most drops which was 30 drops of water. I think the last penny held the most

My science fair topic is “Which beverage stains your teeth the most?” and I chose that topic because my family drinks a lot of different beverages and we disagree on which drinks stain your teeth. The main question that I am attempting to answer is which beverage coffee, tea, soda, or grape juice stain your teeth the most. To do this, I plan to test each beverage on egg shells for five days. To monitor the beverages effect on staining teeth. The information in the following research paper will provide answers to the following research questions: 1) What beverage stains your teeth the most? 2) How does this beverage stain your teeth? 3) Is there a way to prevent staining to your teeth?

- Get out three cups, put water in the first one, soap water in the second one, and then vegetable oil in the third one. Take a dropper and get water in it, then add drop by drop onto a penny till it spills over the edge. Count how many drops there is on the penny while you drop them, do this for each liquid on a clean penny and clean dropper.

This project explores the effectiveness of various cleaning solutions in cleaning tarnished and oxidized coins and the question that is trying to be solved is to find the best cleaning solution. If pennies are placed in lemon juice, apple juice, water, and baking soda paste the penny with the cup of baking soda paste will be the cleanest. My data is what was recorded during the experiment.

Recently, I discovered a new way to make a few cents per day. It doesn’t involve a savings account, or some form of investment such as a 401k. Instead, all it takes is an hour-long stroll throughout the school campus I work at, and a quick jaunt to a gas station near the campus while I keep my eyes cast to the ground in order to spot bright, shiny objects.

As a kid I always loved to mix different liquids together to see what would happen. Present day, it is a joy to experiment with liquids while I am learning about chemistry. Today, I will use litmus paper to determine the acidity of different foods, test the pH of tap water, and analyze what happens when baking soda, liquid soap and vinegar are mixed together. Follow along as I describe in this paper what happened in my experiments.

III. Procedure- The materials we are using in this lab are as follows, • A Cup • Corn Syrup • Distilled Water • Vinegar • Chicken Egg • Food Coloring

There are many articles on the internet which suggest using household items like Windex, alcohol, vinegar, hydrogen peroxide, and a soapy water solution. These solutions may not be harmful to your jewelry and may clean your jewelry some, but here is a little secret about how professional jewelers clean your jewelry.

Finally, you should not use household cleaners on your coins, even if they are oxidized or have a certain tone to them. Using chemical cleaners and polishers on your coins will not only get rid of the oxidization and toning on your coin, it could also take away any luster that your coin has. Additionally, chemical cleaners and polishers can also cause microscopic scratches and damage to your

The thing is, cleaners like washing soda are taken under consideration as a base, while the accumulation removers such as citric acid happen to be... well.. acid. Though both of these ingredients are crucial for a quality recipe, they will neutralize each other if you use both of them simultaneously. Several homemade recipes blend them together, though they are peak performers when used separately.