Explain Why Did The Dime Pull It Off And Holds More Drops Than The Penny
Next, we determined the mass of the penny by placing it on a balance. The mass of the penny was 2.47 grams. Afterwards, we placed the penny in a beaker filled with 20 mL of 6 M HCl. In the end we put the beaker in the fume hood and allowed it to sit overnight. During day two of the penny lab, we removed the penny skin from the beaker using tweezers.
In performing these sets of experiments, in which we would drop a water/water solution onto the surface of a penny, we were trying to test and experiment the bonding qualities of water when made into a solution compared to when the water is pure. When we dropped pure tap water on to a penny, the water, instead of flowing and spreading out, stayed together in a single drop on the penny. We wanted to see how different substances affected this phenomenon. When we formulated our guiding question we made sure to preserve these intents in the language: how do foreign substances influence the bonding quality and strength (to the top of a zinc penny in specific) of water? Since these experiments were conducted in groups, we set up a few roles to
In almost every experiment, there’s an independent and dependent variable, a constant, and a control group. The independent variable in this lab was the coins. The dependent variable was the density. The constant was the amount of water. In this lab, there was no control group .
The Incredible Egg The purpose of this lab was to find out what would happen over time to weight of an egg after we scrubbed the eggshell off in a little spot. We then soaked it in water for 10 minutes, 30 minutes, 24 hours and measure how much the weight went up. Once we came back the next day we measured them after 24 hours. In the same day we put the syrup in the cup instead of water and we measured how much it weighed after 10 minutes, 30 minutes and 24 hours. As we did this with the water the weight of the egg went up because the water soaked into the egg and made it heavier.
I support the penny being retired. The article “Should the Penny Retired” written by Toronto(AP) has many valid points on why the penny should be retired. It is such a nuisance to have pennies these days. No one will pick a penny if they see one on the floor or on the street. People nowadays don 't get excited if they see a penny.
Science 1. Free ears in dogs are controlled by dominant allele (F), and attached ears are controlled by the recessive allele (f). In addition, Short dogs is due to a dominant allele(S), and long hair is due to a recessive allele (s). Which of the following is the genotype of the dogs with free ears and short hair? a. ffss b. FfSs c. ffSs d. Ffss 2.
On our paper we predicted the amount of pennies that could fit in the boat before it sank. We tested the boat in the water and added pennies one by one. We then calculated the mass of pennies that fit in the boat and the density of it. The purpose of this Lab was to make a boat that holds as many pennies as possible and understand how to calculate
Growing up we have all heard that sound of useless coins jingling in a pocket. The majority of the time the change in the pocket is pennies, because nobody wants to use them. The pennies will either get stuck in the washing machine, or fall onto the grounds of the Earth, and no one will ever use them. Why?
That just shows how I'm right about getting rid of the coin. I know taxpayers don't don't want to keep wasting their money on the penny. Pennies serve in today's
I emptied my pockets. Sure enough, they were full of useless junk. Upon closer inspection, in the depths of my front pocket, I found a single copper coin. Just enough to purchase one small piece of candy. My craving could finally be satisfied.
How many times have you seen pennies laying on the sidewalk and choose to not pick them up? Pennies have been a part of the United States’ currency for over two centuries. A penny is not only used for purchasing, it is also a symbol of luck to some and is tossed into wishing fountains and used in the game of heads or tails. Money is a significant part of everyday life, pennies being a large amount of that money. One may use it, but never consider the importance of it.
As a student who has just completed the PennyDrops Anywhere program, I am excited to share what I have learned from each of the 11 lessons. Overall, I found the program to be extremely informative and useful, and I feel that I have reviewed a solid foundation in financial literacy. The first lesson of PennyDrops Anywhere focused on the importance of money management and the value of setting financial goals. This lesson introduced me to the concept of budgeting and taught me how to identify my needs versus wants.
In this passage it states “He asserts that this time saved is even more valuable than eliminating a potential impact on rounding prices. His study says that the time wasted counting pennies could add up to over $700 million per year nationwide. ”(Is the Penny Worth It p.4). Based on what I read, pennies add up to about $700 million by adding up all together. According to the text, eliminating pennies can impact rounding prices because pennies are valuable.
In this experiment, the question that was asked was, are elephants afraid of mice? The hypothesis is if a mouse is placed near an elephant, then the elephant will be frightened. The experimenters traveled to an African safari to perform the experiment with their test subjects (an African elephant and a white mouse). They hid the mouse in elephant dung and rolled over the dung whenever elephants passed by. At first there was speculation that the elephants might have been startled by the moving dung.
The purpose of this lab was to change pennies from copper to silver to gold, like alchemists have attempted to do in history. Through the data and observations gathered throughout this experiment, it can be concluded that the pennies were not changed into a different element. For example, the density of the penny from 2005; which was the penny that was experimented on to see whether or not it could turn into silver; was 4.62 g/cm3 before the experiment and 4.89 g/cm3 by the end of the experiment. If this copper penny really would have turned into silver, then the density of the penny would be 10.49 g/cm3; which is the density of silver; by the end of the experiment. The penny may have turned silver in color, but this was only because it was plated in the zinc that was added to the beaker of water in the experiment.
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