According to your data, was your hypothesis correct? (Be sure to refer to your data when answering this question.)

Summarize any difficulties or problems you had in performing the experiment that might have affected the results. Describe how you might change the procedure to avoid these problems.

So let’s measure the mass of 5 of each type of coin and find the average. [A stack of five pennies on the scale. Five nickels to the left of the scale, five quarters to the right of the scale]

The mass of 5 pennies is 12.5g. [Electronic balance scale massing five pennies with a reading of 12.5]
To calculate the mass of one penny, divide 12.5g by the number of pennies, 5. [mass 12.5 divided by 5]
So the average mass of one penny is 2.5g.

Let’s find the average mass of a nickel and a quarter

The mass of 5 nickels is 25g. [Five nickels are stacked on the scale with a reading of 25.0]
The mass of 5 quarters is 28.4g. [Five quarters are stacked on the scale with a reading of 28.4]
Find the average mass of each type of coin. [Nickel mass 25 divided by 5] [Quarter mass 28.4 divided by 5]

Now let’s find the volume of each.
Let’s use the water displacement method. [Graduated cylinder]
Again, it will be easier to use a number of each type of coin and find the average. [A stack of 20 pennies, 20 nickels, and 20 quarters appear]
We’ll use 20 of each type of coin. [coins times 20]

To find the volume of 20 pennies, we will add water to the graduated cylinder, record the volume, add 20 pennies and record the increase in volume. [Water is added to the 50 mL line of the graduated cylinder and 20 pennies are placed in it]. [57.2 mL]
Subtract the volume of the water from the volume of the water and pennies.
This is the volume of 20 pennies, so divide that volume by 20 to find the average volume of a single penny. [20 pennies = 7.2][ 20 pennies = 7.2 divided by 20. One penny = .36 mL]
The average volume of one penny, rounded to the nearest milliliter is 0.40. [One penny = .4 mL]

Let’s do the same thing with the nickels and quarters.

The volume of 20 nickels plus 50.0 ml of water is 64.4ml. [Graduated cylinder with 50 mL of water and 20 nickels. Nickel times 20 = 67.4 mL]
Calculate the volume of one nickel. [Nickel = 64.4 mL divided by 20]
The volume of 20 quarters plus 50.0 ml of water is 66.2ml. [Graduated cylinder with 50 mL of water and quarters] [Quarter times 20 = 66.2 mL]
Calculate the volume of one quarter. [Quarter = 66.2 mL divided by 20]

List at least two real-world examples that apply the findings of this experiment. (Hint: An example of this type was given in the introduction to this project.)