Unknown Metal Lab Report

The purpose of the lab is to acquire the percent composition of zinc and copper. The procedure included obtaining a post 1983 penny and washing it with soap and water. Using a triangular file, we made an X on the penny. Then, we cleaned the top and bottom of the penny with steel wool until it was shiny. We rinsed the penny in acetone and dried it with paper towel.

Descartes deals with this predicament by giving the Archimedes which shows that finding at least one

By using Coulomb’s law to study these forces, researchers are able to better understand crystal structures (Coulomb, 2018). Although these laws are not named after Cavendish, due to the fact his findings were not published until after his death, he is credited with discovering the information contained in these

Why do some objects sink while others float? The answer is buoyancy. Buoyancy is the ability or tendency of something to float in water or other fluid. Archimedes discovered while doing his experiments that any object that is or is sort of (submerged) in a fluid and is (acted) on by an upward or buoyant force.

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.

In this lab, we tested 8 known ingredients to find what ingredients was in our unknown A and unknown B medications. We first tested the water solubility of our knowns and unknowns. We found that of the knowns, cornstarch and acetaminophen were the only ones not water soluble. The unknowns were also not water soluble. Th next test was the pH test.

Compare the color of the unknown substance with a flame color chart. Record down the observations into

Euclid created a geometry textbook with 465 propositions and proofs about geometry titled Elements. Pythagoras invented the Pythagorean Theorem, which states that “the square of a right triangle’s hypotenuse equals the squared lengths of the two remaining sides. ”(Ancient World History -------) Lastly, Archimedes, a scientist, estimated the accurate value of Pi. Most of these theories although they were not always accurate they led to further

Copper Cycle Lab Report Ameerah Alajmi Abstract: A specific amount of Copper will undergo several chemical reactions and then recovered as a solid copper. A and percent recovery will be calculated and sources of loss or gain will be determined. The percent recovery for this experiment was 20.46%.

Amadeo Avogadro first proposed that the volume of a gas at a given pressure and temperature is proportional to the number of atoms or molecules, regardless of the type of gas. Although he did not determine the exact proportion, he is credited for the idea. Avogadro’s number is a proportion that relates molar mass on an atomic scale to physical mass on a human scale. Avogadro’s number is defined as the number of elementary particles (molecules, atoms, compounds, etc.)

In the 1860’s a man name Dmitri Mendeleev made the periodic table. He discovered most of the elements we used today and based them on the table due to their atomic weight . Unfortunately, while making the table Mendeleev realized there was spaces in the table. But of course Dmitri knew that there was more elements to be found.

Experiment: Density of Liquids Analysis Questions Directions: Answer in complete sentences. In your lab notebook, histogram the class data for the densities of Liquid A and Liquid B. Differentiate the boxes for each liquid with different colors or shading, and indicate this with a Key. For your horizontal axis, please use an interval width of 0.02 g/cm³ and count by odd numbers (i.e., 0.67, 0.69, 0.71, etc.).

The element Cadmium symbol on the periodic table is known as Cd, it has an atomic number 48, atomic weight 112.411, density 8.69, and it is classified as a metal. This metal is found naturally in the Earth’s crust and it is rare to find in its pure form, however, it can be found coupled with other elements in a variety of compounds, including with some toxic elements, which Cadmium can be toxic itself. Cadmium in its pure form is of a bluish silvery white color and does not change color when heated up, however, impure cadmium when heated up can change color. Friedrich Stromeyer, and Karl Samuel Leberecht Hermann, simultaneously discovered the metal both in Germany in 1817, as an impurity zinc carbonate. The element Cadmium’s name derived from

This information was found in the “Density Column lab” and “Sink or Float Lab”. In the labs, it was discovered that the less dense liquids would be on top and the more dense liquids would be on the bottom. The liquids posed as the layers of the Earth. Density is how much matter can go into an object. According to the “Density Cubes Lab”, the more atoms in one object, no matter the size, can be

Ac 2.3 Explain the method of making titanium alloy and investigate how the composition and structure of metal alloys, polymers and poly-matrix composites influence the properties of the parent material. 1. Extraction of Titanium Titanium is extracted from its ore rutile-tio2. It is first converted into titanium (5) chlorine, which is then reduced to titanium using either magnesium or sodium. The ore rutile is heated with chlorine and coke at a temperature of about 1000˚c.