Carbon Facts - Atomic Number 6 or C

Carbon is the element with atomic number 6 on the periodic table with symbol C. This nonmetallic element is the key to the chemistry of living organisms, primarily due to its tetravalent state, which allows it to form four covalent chemical bonds with other atoms. Here are facts about this important and interesting element. CarbonBasic Facts Atomic Number: 6 Symbol: C Atomic Weight: 12.011 Discovery: Carbon exists free in nature and has been known since prehistoric time. The earliest known forms were charcoal and soot. Diamonds were known in China at least as early as 2500 BCE. The Romans knew how to make charcoal from wood by heating it in a covered container to exclude air.  Renà © Antoine Ferchault de Rà ©aumur showed iron was transformed into steel by the absorption of carbon in 1722. In 1772, Antoine Lavoisier demonstrated diamonds were carbon by heating diamond and charcoal and measuring the released carbon dioxide per gram. Electron Configuration: [He]2s22p2 Word Origin: Latin carbo, German Kohlenstoff, French carbone: coal or charcoal Isotopes: There are seven natural isotopes of carbon. In 1961 the International Union of Pure and Applied Chemistry adopted the isotope carbon-12 as the basis for atomic weights. Carbon-12 accounts for 98.93% of naturally-occurring carbon, while carbon-13 forms the other 1.07%. Biochemical reactions preferentially use carbon-12 over carbon-13. Carbon-14 is a radioisotope that occurs naturally. It is made in the atmosphere when cosmic rays interact with nitrogen. Because it has a short half-life (5730 years), the isotope is almost absent from rocks, but the decay can be used for radiocarbon dating of organisms. Fifteen isotopes of carbon are known. Properties: Carbon is found free in nature in three allotropic forms: amorphous (lampblack, boneblack), graphite, and diamond. A fourth form, white carbon, is thought to exist. Other allotropes of carbon include graphene, fullerenes, and glassy carbon. Diamond is one of the hardest substances, with a high melting point and index of refraction. Graphite, on the other hand, is extremely soft. The properties of carbon depend largely on its allotrope. Uses: Carbon forms numerous and varied compounds with limitless applications. Many thousands of carbon compounds are integral to life processes. Diamond is prized as a gemstone and is used for cutting, drilling, and as bearings. Graphite is used as a crucible for melting metals, in pencils, for rust protection, for lubrication, and as a moderator for slowing neutrons for atomic fission. Amorphous carbon is used for removing tastes and odors. Element Classification: Non-Metal Toxicity: Pure carbon is considered to be non-toxic. It may be eaten as charcoal or graphite or used to prepare tattoo ink. However, inhalation of carbon irritates lung tissue and can lead to lung disease. Carbon is essential for life, as it is the building block for proteins, nucleic acids, carbohydrates, and fats. Source: Carbon is the fourth most abundant element in the universe, after hydrogen, helium, and oxygen. It is the 15th most abundant element in the Earths crust. The element forms in giant and supergiant stars via the triple-alpha process. When stars die as supernovae, carbon is scattered by the explosion and becomes part of the matter integrated into new stars and planets. Carbon Physical Data Density (g/cc): 2.25 (graphite) Melting Point (K): 3820 Boiling Point (K): 5100 Appearance: dense, black (carbon black) Atomic Volume (cc/mol): 5.3 Ionic Radius: 16 (4e) 260 (-4e) Specific Heat (20 °C J/g mol): 0.711 Debye Temperature ( °K): 1860.00 Pauling Negativity Number: 2.55 First Ionizing Energy (kJ/mol): 1085.7 Oxidation States: 4, 2, -4 Lattice Structure: Diagonal Lattice Constant (Ã…): 3.570 Crystal Structure: hexagonal Electronegativity: 2.55 (Pauling scale) Atomic Radius: 70 pm Atomic Radius (calc.): 67 pm Covalent Radius: 77 pm Van der Waals Radius: 170 pm Magnetic Ordering: diamagnetic Thermal Conductivity (300 K) (graphite): (119–165) W ·m−1 ·K−1 Thermal Conductivity (300 K) (diamond): (900–2320) W ·m−1 ·K−1 Thermal Diffusivity (300 K) (diamond): (503–1300) mm ²/s Mohs Hardness (graphite): 1-2 Mohs Hardness (diamond): 10.0 CAS Registry Number: 7440-44-0 Quiz: Ready to test your carbon facts knowledge? Take the Carbon Facts Quiz Return to the Periodic Table  of Elements Sources Deming, Anna (2010). King of the elements?. Nanotechnology. 21 (30): 300201. doi:10.1088/0957-4484/21/30/300201Lide, D. R., ed. (2005). CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.

Child Abuse And Its Effects On Society - 1342 Words

Child Abuse. How does one decide what constitutes abuse? Is there a thin line between abuse and discipline? We often hear the horrific stories of child abuse in our communities, but are we as a society so used to hearing these stories that we have become desensitized to them? Child abuse is a prevalent thing in communities and often time the victims are suffering in silence. We, as a society, have a bad habit of â€Å"turning our heads the other way† or â€Å"not wanting to get involved.† The mentality of â€Å"it’s none of our business† is an extremely dangerous mind set to have. It is time for America to step up and start helping the ones that are not able to fight for themselves. The children of our country. There are generally three types of abuse. They include psychological, sexual, and physical abuse. Child abuse can be described in many different ways. Some people will describe abuse as spanking a child. While others think that abuse only happens when someone uses an instrument to beat a child or inflicts such violence on a child that they end up dying. These are two very different ends of the spectrum. Child abuse is much more than the physical abuse we are often exposed to by the media. Physical abuse is how the State of Kansas defines child abuse. Child abuse as defined in the Kansas Statute Book says this: 21-5602 Abuse of a Child (a) Abuse of a child is knowingly: (1) Torturing, cruelly beating or shaking any child under the age of 18 years which results in great bodilyShow MoreRelatedEffect of Child Abuse in Our Society1405 Words   |  6 Pages EFFECT OF CHILD ABUSE IN OUR SOCIETY INTRODUCTION Child abuse is the physical, sexual, emotional abandonment and/or maltreatment of a child. Child abuse is a latent function of some families that is not intended but happens anyway. Child abuse is often seen differently, depending on various cultures, societies, and groups. 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According to the Domestic Abuse Shelter, â€Å"In today s society, Batteringâ€Å" is the single major cause of injury to women, exceeding rapes, muggings and auto accidents combined (Domestic Abuse Shelter - A New Beginning). In multiple cases, death threats have been made, causing victims to believe they are on their own without help from our justice system. ThisRead MoreChildhood : Child And Wife Abuse1698 Words   |  7 PagesChild and Wife Abuse Name Institution Introduction Childhood is meant to embrace playing in the sun and the rain as well as being carefree as opposed to living in the darkness of the soul. Child abuse remains one of the most contentious issues in our society that affects many children who lack the courage to open up about it as a result of stigmatization and low self-esteem. On the other hand, wife abuse is also a rampant practice that arises out of a marriage. Both child and wife

Community Partnership free essay sample

Moreover, the legislations are not only developed among different government agencies, but with the community as well, such as: community member, nonprofit organization, private business, and the media. Our goal In community partnership Is to work as a team. By working together with the community, a strong relationship and trust Is built between the government and the people, making It easier to communicate with each other. Once when effective communications Is established, working together as a team Is accessible.Different agencies have their own tasks and the community has their own duties to be more effective In different areas, nevertheless, we all collaborate by sharing information and helping each other to make sure the best result is accomplished To establish community partnership, we will create a community organization where government officials are working alongside with the people in the same building. This organization will be established by both the government and the pe ople, so either side have more power over another. We will write a custom essay sample on Community Partnership or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Every issue will be voted and unanimous decisions win. This organization will deal with any issues in the community. All the voices will be heard and the issues will be resolved as soon as possible. Not only it is the polices duty to patrol the neighborhoods, people in the community are obligated to keep the neighborhood safe as well. There will be a neighborhood-watch program and other programs prevent drugs and gang problems.There will be frequent meetings to ensure that the people are well informed about current issues and new ideas and moreover, to continue the effectiveness of the relationship between the people and the government. Community partnership is one of the most important factors in community oriented policing service. Without a strong relationship between the government and the people, we cannot work together. Therefore, an effective community oriented policing service cannot be established. Working together is the key to fight crime and to better the community we live in.