CHEMISTRY FOR HUMAN WELFARE: IT’S PROMISES AND CONCERNS 2011 had been officially declared “The International Year of Chemistry” t o commemorate the achievements of chemistry and its contributions to mankind. It is so fitting that 2011 is the centenary year for the award of Nobel Prize to Marie Curie for her discovery of Radium and Polonium. Also this is the 150th birth anniversary of Dr. P .C Roy. All living things in this beautiful world are nothing but
Premium Nuclear fission Chemistry Chemical substance
bus 9.2 – Production of Materials: Δ. Construct word and balanced formulae equations of all chemical reactions as they are encountered in this module: • Basic reactions to remember: – Acid reactions: ▪ acid + base [pic] salt + water HCl(aq) + NaOH(aq) [pic]NaCl(s) + H2O(l) ▪ acid + metal [pic] salt + hydrogen gas HCl(aq) + Mg(s)[pic]MgCl2(s) + H2 (g) ▪ acid + carbonate [pic] salt + carbon dioxide gas + water HCl(aq) + CaCO3(s)[pic] CaCl(s) + CO2(g) + H2O
Premium Covalent bond Chemical reaction Ionic bond
useful work. Satellites=free fall. Ionizing radiation=energy in the form of waves or paricle Beta radiation-just an electron‚ wont go through skin but really bad inside you alpha- he2+ nucleus-wont go through skin but bad once inside. Comes from radioactive particles like lead 210 or iodine. gamma- high energy photon‚ may go through you. neutrineos-noninteracting‚ come from fusion‚ cosmic rays-very powerful. Come from supernovas. Moves at speed of light moderator-slows neutrons b/c they are absorbed
Premium Force Classical mechanics Energy
preventing the release of radioactive materials through contaminated water and air.7 The Japanese nuclear safety commission estimated that the plant’s reactors "released up to 10‚000 terabecquerels of radioactive iodine-131 per hour into the air for several hours after they were damaged."4 Unlike Chernobyl‚ no immediate deaths or radiation sicknesses have been reported from the accident‚ but the government is still hesitant to allow evacuees to return to the contaminated
Premium Carbon dioxide Global warming Fossil fuel
Matthew Rose Mr. Schwartz Chemistry 8 March 2011 Ernest Rutherford Ernest Rutherford was one of the most famous physicists of the early 20th century. He won the Nobel Prize in chemistry in 1908 for his work on atomic emissions and his contributions that led to the discovery of atomic fission. Ernest Rutherford was born in Nelson‚ New Zealand on August 30‚ 1871. His father was James Rutherford and his Mother was Martha Thompson. His father was a wheelwright‚ a person who builds and repairs
Premium Atom Neutron Proton
Identifying sites of protein synthesis in Chlamydomonas using erythromycin and cyclohexamide as protein synthesis inhibitors. October 16‚ 2009 Introduction: In living cells‚ prokaryotic or eukaryotic‚ the synthesis (construction) of proteins is accomplished by similar machinery. Amino acids‚ ribosomes‚ messenger RNA (mRNA)‚ and transfer RNA (tRNA)‚ are all necessary for the building of functional proteins in a cell. Ribosomes are the site of protein synthesis in a cell‚ and there are two
Premium Protein Cell DNA
Anthropologist who specializes in Forensic Anthropology CHAPTER 2 UNCOVERING THE PAST RADIOCARBON DATING RELIABLE METHOD FOR DATING REMAINS UP TO 50000YRS OLD; Base on principle that all living matter possesses a certain amt of a radioactive form of CARBON RADIOACTIVE CARBON - produced when
Premium Anthropology DNA Evolution
of sulfur is 2 mohs (S). Sulfur has four natural isotopes‚ all of which are stable. They include: sulfur-32‚ sulfur-33‚ sulfur-34‚ and sulfur-36. Sulfur-32 is the most abundant‚ with 94.99% of all atoms having sixteen neutrons. The second most abundant is sulfur-34‚ whose abundance is 4.25%. Sulfur-33 and sulfur-36 are rare to find‚ with natural abundances of 0.75% and 0.01%‚ respectively (RSC). There are at least six known radioactive isotopes of sulfur‚ with the most prominent being sulfur-35
Premium Sulfur Oxygen Hydrogen
large buildings to reflect back the heat from the sun. Gold is also used in electroplating the copper components of an electric device in a process known as Gold Electroplating to improve the device’s solderability. In medical practices‚ the radioactive isotope of gold - gold-198 is used in the treatment of cancer while AuNa3O6S4 (Gold sodium thiosulfate) is used to treat arthritis. In photography‚ gold in the form of HAuCl4 (Chloroauric acid) is used to preserve photographs. Table (i): Chemical
Premium United States California California Gold Rush
Lit 2 May 2013 History of Cancer: Radiation There is a broad group of different types of cancers and they all have a wide range of causes. Each cancer is different according to its biology and pathophysiology. Cancer is a very broad topic but chose four topics that show that radiation is the main cause of cancer. Before I can prove radiation is the cause of cancer‚ there needs to be an introduction as to what cancer is and how it spreads
Premium Cancer Oncology