The Chemical Element In China

The purpose of this lab was to determine the empirical formula of copper oxide compound. In the lab, hydrochloric acid and copper oxide compound was mixed until it formed a blue solution. An oxidation-reduction reaction, a reaction in which there is an exchange of electrons between elements, was performed by adding zinc to the solution to displace the copper in copper chloride. Zinc, in this case, was oxidized by losing two electrons (0 → 2+) while copper was reduced by gaining two electrons (2+ → 0). Also, when the copper was displaced, it became a precipitate, which is a substance that comes out of a solution as a solid due to insolubility.

Copper is really a metal that has helped human society as we know it today a lot. It was found already 8000 BC and used not

Did you know the Statue of Liberty is made of copper? The Statue of Liberty is not originally green, it was a dull brown colour but turned green from many years of oxidation.Copper (Cu), Copper’s atomic number is 29 and has the atomic weight of 63.546.Copper is a mineral and an element essential to our everyday lives. It is a major industrial metal because of its high ductility, malleability, thermal, electrical conductivity and resistance to corrosion. It is an essential nutrient in our daily diet. And, its antimicrobial property is becoming increasingly important to the prevention of infection. It ranks third after iron and aluminum in terms of quantities consumed in the USA.Copper has the melting point of 1,981° F (1,083° C) and a boiling

One positive impact of copper mining is that it has a great impact on the economy, as it is a multi-purpose metal. It can be used for infrastructure, motor vehicle radiators and heating systems as well as electrical generators and motors for electrical wiring. Furthermore, various establishments will purchase the metal. Although it’s not as costly as gold, copper is sought out for its versatility.

The main components that make up copper are protons, neutrons, and electrons. Protons are positively charged, electrons are negatively charged, and neutrons don’t have a charge. The nucleus is at the center of the atom, and it contains protons and neutrons. Electrons are “stored” in energy levels. Since protons have a +1 charge and neutrons don’t have a charge, the nucleus is positively charged. The two stable copper isotopes that should be describe are 63Cu and 65Cu. The composition of 63Cu is 0.6915 (15); the composition of 65Cu is 0.3085 (15) (“Isotopes of Copper.” Wikipedia). The abundance of 63Cu is 69.17% (2); the abundance of 65Cu is 30.83% (2) (“Copper Isotopes” – Cu Isotopes). The nucleus of any copper atom has 29 protons and electrons.

The Element: Chlorine General Information We researched the chemical element known as chlorine. Chlorine has an atomic number of 17 and an atomic weight of 35.453. It has a valence number of 3. The element has 3 energy levels. Chlorine exists as a greenish-yellow gas at normal temperatures and pressures.

One amazing thing copper is used for is the fact that it good to build with. People use it to make pipes, and other things. It was used to make the outer shell of the statue of liberty, it worked so well that weathering and oxidation of the copper skin has amounted to just .005 of an inch in a century and the only part of copper that the statue needed replaced or renovated was

Both, the first uncombined and metal, Gold was is used for fashion. Copper being the next uncombined element was used for tools and weapons.

Copper is a transition metal with 29 protons and electrons this maintains an electronic balance within the atom (Bentor). The average atomic mass for copper is 63.546 amu. Coppers’

In recent years, China has grown into a global superpower. This paper will discuss two threats that plague the country environmentally, air pollution and desertification, while also providing a second/third order effect and a brief assessment of each. In addition, it will highlight the current political, economic, and military topics that impact the region. Lastly, this paper will provide a short/long term assessment of China as a whole and the future intelligence value.

On a daily basis, people come across hundreds of inventions that are made around the world. Each one of these inventions have profoundly affected the way people live their lives. China is one of the leading providers to the United States. They have also made various inventions that people benefit from today.

Early uses of the element include jewelry, weapons, and tools. The element was first used around 9000 b.c.e. and was found in northern Iraq. Copper was first used by Native Americans around 2500 b.c.e. One of the first skills that the ancient coppersmith must have learned how to do was shape the metal, possibly by heating. This element was first used to its full potential when Coppersmiths began to use tin with copper to make an alloy called bronze. An alloy is a mixture of two or more metals with properties differs from those of the individual metal. The alloy was first discovered as early as 4000 b.c.e. Bronze was used similar to copper due to the many variety of tools, weapons, and jewelry that are created from the alloy. It differs from copper in the way that with tin added, the alloy is a better conductor and easier to shape than the metal alone. Copper was used as the primary metal of the world to around 3000 b.c.e when society discovered iron. Many copper compounds are used in today’s agricultural, medical, and pest-control jobs. Copper Acetate (Cu20 (C2H3O2) 2) is a

into weapons or tools. Copper has been one of the most useful metals for over

The first point to note is that ‘inventor’ is a very ambiguous term. Is this the first person to think, to document, to patent, or to produce? The second point is that stainless steel wasn’t truly defined until 1911, so are we to cast aside those chromium-iron alloys that

Political Factors: The Chinese government has realised and reached a consensus on the importance of prioritising environmental protection beyond a “basic policy” of country agenda from 2009. The Chinese State Environmental Protection Agency spent $162.5 billion on environmental protection in 2009 and the Chinese government strongly committed