Essay On Copper Oxide Nanomaterial

Copper is a metal, that people obtain from chalcopyrite and bornite ores and minerals, by smelting, leaching and electrolysis, which are chemical reactions. Yet, it belongs to a sub-group of metals called ‘Transition Metals’. Existing as an element, it’s small particles (atoms) are very close to each other (most common state for copper is solid), but aren’t chemically bonded. Consequently, it is a 26th element on the periodic table, meaning that it’s atomic structure consists of 26 protons, and therefore 26 electrons.

After heating the solution let it cool for 5 minutes, then pour off the liquid trying to keep the solid, rinse the solid in distilled water. The copper turned into a solid.

In this experiment an elemental copper was cycled a series of five reactions where it ended with pure elemental copper as well, but at different stages of the cycle the copper was in different forms. In the first reaction, elemental copper was reacted with concentrated nitric acid where copper changed the form from solid to aqueous. Second reaction then converted the aqueous Cu2+ into the solid copper II hydroxide (Cu(OH)2) through reaction with sodium hydroxide. The third reaction takes advantage of the fact that Cu(OH)2 is thermally unstable. When heated, Cu(OH)2 decomposes (breaks down into smaller substances) into copper II oxide and water. When the solid CuO is reacted with sulfuric acid, the copper is returned to solution as an ion (Cu2+). The cycle of reactions is completed with the

For our science assessment we had the task to research about a metal of our choice. Since I am really into computers, I chose copper. A metal used in all kinds of wires, cpu’s and other stuff without a computer wouldn’t work. This fits really well into what we have to do for the second part, describe how this metal has helped human society.

The objective of this lab was to determine the percent recovery, or percent yield, of copper. After going through multiple reactions with nitric acid, sodium hydroxide, heat, sulfuric acid, and magnesium, the metallic copper was regenerated. The starting 0.021g of copper changed from solid to liquid to solid to liquid, and finally ended at a solid state. The original copper was 0.021g and the ending copper was 0.008g creating a 38.10% recovery.

Bases that have are able to dissolve into water are known as alkalis. Sodium hydroxide is an alkali as it dissolves in water, copper oxide cannot dissolve water therefore is not an alkali.

Before the synthesis of the Copper Iodine Compound, the identities provided (CuNO3)2 and Nal weighed 1.65 g and 4.7 g, respectively. After being weighed, the (CuNO3)2 exhibited a blue color, while the Nal, through observation, was a white color. However, when both identities were combined, the product turned into a brown and red rocky material. Once 20 mL of deionized water was added, the product quickly turned pale pink paste. After the solution was repeatedly washed with a total of an additional 100 mL of deionized water, the product was powdery and pink with small grains, and was left to air-dry. Once the product was air dried, it was observed to be a pale pink color, while the filter paper was stiff as the product was hard and dry. Therefore, the solid was scraped off onto a recrystallizing dish. However, the mass of an empty recrystallizing dish needed to be recorded in order to compare how much of the synthesized copper iodide was obtained. Within this case, the empty recrystallizing dish used weighed 32.01 g, the product on the empty dish weighed 1.03 g, having a total weight of 33.04 g.

The name copper and the symbol Cu derive from the Latin word “Cuprum”, which by definition means the island of Cyprus. Copper is the 29th element and is located amongst the transition metals in the periodic table. Copper is one of the first elements both known and to be utilized by humans. It is believed that the reason for its early discovery was due to the element being able to naturally occur in its relatively pure form. Archaeological evidence has suggested that it was in fact the Mesopotamians somewhere between 5000 and 6000 years ago, which were able to fully utilize both extracting and making use of the element itself. A copper pendant was found in the Middle East and is dated 8700BC. There are many ways that copper can be used, as

The lab performed required the use of quantitative and analytical analysis along with limiting reagent analysis. The reaction of Copper (II) Sulfate, CuSO4, mass of 7.0015g with 2.0095g Fe or iron powder produced a solid precipitate of copper while the solution remained the blue color. Through this the appropriate reaction had to be determined out of the two possibilities. Through the use of a vacuum filtration system the mass of Cu was found to be 2.1726g which meant that through limiting reagent analysis Fe was determined to be the limiting reagent and the chemical reaction was determined to be as following:-

In this experiment, the mass percentage of water, and the molecular formula, of a hydrated copper (II) sulfate will be calculated through an understanding of hydrates, percent composition, and moles.

Copper, Cu, is the 29th element in the periodic table and has 29 protons. Its mass number is 63.55. It is a transition metal in the middle of the periodic table. The symbol for copper is "Cu", which comes from the Latin word cuprum, which came from the Latin word for the island of Cyprus, where copper was found. Copper can be found as a metal in the ground. It is found in small amounts in living things. Some mollusks and arthropods have blue blood because they have copper in their blood. Copper may be the oldest metal in use, as ancient copper tools have been found. Copper is used in electrical wiring, it’s also what the Statue of Liberty is made of. Copper does not corrode and is not as toxic as a metal. Copper compounds are toxic though,

the element copper is a chemical element with the symbol Cu. it is a very high thermal metal and its atomic number is 29. its atomic weight is 63.546, its melting point is 1357.77k, its boiling point is2835k, and its density is 8.933 grams per cubic centimeter. The components of an atom are made up from protons, electrons, and neutrons. they are arranged from highest relative charge to lowest just like this: proton +1, neutron 0, electron -1. There are 29 electrons in the copper atom. there are 29 electrons in the copper atoms because the electrons are arranged in multiple layers called layers. electrons are distributed into different shells.the first shell can hold a maximum of 2 energy level has the lowest energy. the second shell can hold

The molar absorptivity, found by graphing a line of best fit through the absorbance vs. concentration points, was 5.456L/mol·cm. Using that, the path length (1 cm), and the absorbance (0.912), the concentration of the unknown solution, by plugging the acquired data into the equation A=ecl, was found to be 0.199M. To prepare 500.0 mL of 0.50 M CuSO4(aq), 0.25 mol, or 39.9g, CuSO4(s) must be added to 0.25L H2O(l). The absorbance for 0.25 M can be calculated by plugging the concentration into Beer’s

I have chosen to review the material properties and applications for the compound semiconductor copper indium gallium selenide as it is used in photovoltaic cells. A chalcopyrite-based material, the chemical formula is often written as CuIn1-xGaxSe2 (CIGS) to represent the alloy system where the stoichiometric ratio of the compound can vary from pure CuInSe2 (CIS) to CuGaSe2 (CGS). For the purposes of this document, however, the entire range of combinations will simply be referred to as CIGS. I selected this material for a few reasons. I am fascinated with

Figure 5 shows the SEM images of Cu0.5Ni0.5Fe2O4 synthesized powder dried at 90oC in vaccum (Fig.5a) and calcined at 850oC for 4h