I. Introduction
This experiment shows the relationship between density, mass, and volume. These three qualities are all related in that ρ = m/v, where p is density, m is mass, and v is volume. Through this experiment, however, it can be seen that by mixing certain substances, the density of the mixture can change, allowing certain goals to be met. In addition to this, finding density can be essential, as any substance has a density unique only to itself. For example, water (H2O) has a density of 1 g/mL, so any substance with that density has to be H2O.
This process investigated Archimedes’ principle, which deals with density. Archimedes states that “A body immersed in a fluid is buoyed up by a force equal to the weight of the displaced fluid” (Archimedes’). This means that whether or not an object submerged in a liquid will float depends on the density of the object and liquid. If the object is denser than the liquid, it will sink; if the object is less dense than the liquid, it will float.
There are many ways to study this principle. For example, it could be tested in any fluid to see if Archimedes’ principle is still correct when dealing with gases; a heterogeneous mixture could replace the water to see demonstrate that it is truly density affecting the buoyancy of the object.
This method was used because it required only a simple procedure while still accurately displaying Archimedes’ principle. It also involved taking measurements and using significant figures, which is
Conclusion: The purpose of this lab was to find the relationship between the mass and the volume of the four samples. The densities from least to greatest were shortest(4), short(3), medium(2), and longest(1). Density can vary with temperature, and that could cause errors in the collected data. A real world application of density is icebergs. Icebergs float because they are less dense than the water around them. The icebergs are made of frozen freshwater but they are surrounded by very cold salt water. Initially, salt water has a higher density than freshwater and the low temperatures of the water cause the density to increase even more. The salt water and its increasingly high density allows for the less dense icebergs to float. Knowing this about density is good to know so we can figure out how things in the world work, like how and why massive icebergs float in the middle of the
For example, how to physically find the density of an object by finding their mass with a balance and finding the object's volume using the method water displacement. The purpose of the experiment was to find out which metal is used to create post 1982 pennies. Pre-1982 pennies were made out of copper but then the metal used for making pennies changed. The metal used to create pre-1982 pennies was copper. Since the metal used to make pennies changed the density of post-1982 changed.
CHM130 Lab 6 Exploring Density Name A. Data Tables Place your completed Data Tables here Part IIIa (3 points) Volume of water in graduated cylinder (mL)10 mlMass of rubber stopper (g)11.15Volume of water and rubber stopper (mL)16.5 Part IIIb (6 points) Volume of water in graduated cylinder (mL)20Mass of iron nail (g)3.66Volume of water and iron nail (mL)20.5 Part IV (20 points) Type of Aluminum FoilMass (g)Length (cm)Width (cm)Volume (cm3)Thickness (cm)Regular.63g15 cm 10.02 cm.21 cm3.0014 cm Heavy Duty.97g15 cm10.01 cm .36 cm3.0024 cm B. Follow Up Questions Show all work for questions involving calculations. Part I Use the concepts/vocabulary of density to explain why the liquids formed layers in Part I of the procedure. (8 pts)
In this lab, the calculations were based upon mass, volume and their relationship to density. However, a couple of errors made our results have variations. First of all, the graduated cyinder in which the table salt plus water was added was a little wet. So the extra drops of water contributed to the whole mass of the table making out results a little different from the known results. Also, in the “Measuring the density of bearing balls” lab, the diameter of the balls was difficult to measure because of the shape. The balls were spheres and
E. What would happen if you dropped the object into the beaker while using the Archimedes’ Principle method instead of submerging the object?
Experiment 2 “Density” was about how to measure the mass and volume and determine the density of water, alcohol, and a solid. For this lab, we begin by calculating the mass of empty graduated cylinder and the mass of 25 mL of tap water. After taking the mass of water and cylinder, we record it on “Density of Water: Data Table”. Since we did not have enough time of complete the whole lab, so we skipped the procedure to measure the density of alcohol. We jumped to the next procedure, which was density of a solid. For that we used a copper and it density 8.95. For this lab, my partner and I did not make any mistakes or errors. But, for better improvement I think we should have more time to complete the whole lab. I felt like we was rushing through
Introduction: Accuracy and precision were the major aspects of the lab. Accuracy is how close the average of the measured values are to the actual value. Precision is the closeness of repeated measurements. In the lab, the aim was to get as close as possible with both accuracy and precision when determining the mass and volume of the spheres. The mass was determined by weighing the spheres on the Analytical Scale and Triple Beam Balance Scale. The volume is determined by measuring with a ruler and by water displacement. The standard
Density is the amount of matter per unit of measurement (Merriam-Webster. Merriam-Webster, n.d. Web. 26 Aug. 2016.). If water has a density of 1.0 g/mL and you place a substance with a density of 1.8 g/mL the substance will sink because it is denser than water. Density is often measured in g/cm^3 or g/mL because the formula for density is D=m/v.
In the movie 12 Angry Men, the panel of jurors is a group of men who have been influenced at the time by social bias and discrimination towards ethnicities that are not their own. They are deciding upon the fate of a young man who is on trial for killing his father and is of Puerto Rican descent. The general decision among the jurors was that the young man was guilty. However, the jurors did not go over the facts in the case; they tried to jump to a consensus until they realized the vote for guilty was eleven to one. Juror Number Eight in 12 Angry Men is a courageous citizen in the pursuit of justice among his peers; he showed the power of critical thinking and individual conviction in the face of discrimination and prejudice.
Archimedes was requested to check for the presence of silver in the king’s gold crown. Archimedes came up with the idea to get the solution as from when he was going to take a bath. Archimedes had stepped into his bathtub that was filled with water and caused it to overflow. Archimedes filled a bathtub with water to the brim with pure gold at the equal weight of the king’s crown. He then removed the gold and placed the kings actual crown into the bathtub. Archimedes knew that if there were traces of silver in the king’s crown then it would be heavier causing the water in the bathtub to overflow. The difference in weight is allows Archimedes to know that the kings crown is or is not made from solid gold. Archimedes realized that all bodies
In Measuring and Understanding Density, several experiments were performed to find density of regularly shaped objects, irregularly shaped objects, liquids and gasses. An additional experiment was done to find the specific gravity of a sampling of liquids. The purpose of the experiment was to provide a better understanding of density and to be able to extrapolate unknowns based upon these calculations. The experiments yielded data in keeping with Kinetic-molecular theory in regards to the density of water versus its temperature. Key measurements and formulae were also used to determine densities of metal and plastic objects as well as irregularly shaped rocks. It is possible to find the density of an object (be it liquid, gas or
A well known story about Archimedes is that he discovered that every item has a different density. It is said that he was in the bath tub and realized that the water would rise up when different amounts of weight was placed in the water. It was in the tub that Archimedes is said to realize that objects of the same weight would displace different amount of water. It is known with certainty that he then ran through the streets naked saying,
Mimesis: The basic theoretical principle in the creation of art (Encyclopedia Brittanica). Mimesis was a term and principle used by both Plato and Aristotle. According to Plato, art is an “imitation of and imitation” when compared to the forms. What he means by this is that an art creation is an imitation of something physical, which in itself is an imitation of a form. Aristotle believes artist creations are an “imitation of an action”. This is interpreted as art is the imitation of the action of life. Together they both agree that artistic creations are imitations of the truth or imitations of the forms. Rather than seeing artistic creations as imitations, I argue that art is an individuals perception of the forms, as well as it is the closest an individual can come to comprehending the forms. The supporting reasons for this argument include proving that the sensible are in fact artworks in their own way, that everyones perception of the forms are different, and that art is the closest way of portraying our versions of the forms.
There are over Six Billion people inhabiting the planet earth today and that number is growing. “In the six seconds it takes you to read this sentence, eighteen more people will be added” (Ehrlich 9). The total population of the World, projected on October 23, 2001 at 6:28:09 pm GMT was 6,181,600,089 people (U.S. Bureau of the Census). Each hour there are 11,000 more mouths to feed; each year more than 95 million. Nevertheless, the world has hundreds of billions fewer tons of topsoil and hundreds of trillions fewer gallons of groundwater with which to grow food crops than it had in 1968.
After that, it is crucial to convert the mass to volume. The water density at a temperature will aid this process. The compliance of the Volume Occupied by 1.000g of Water Weigh in Air table is deemed necessary throughout the comparison.