Metallic Element essay topics
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Platinum Metals
912 wordsI am a silvery metal that is as resistant to corrosion and tarnishing as gold. I am almost as rare and consequently am the likewise highly valued and used in Jewelry. I am also used in chemicals industry as a catalyst, in medicine as an anti-cancer drug, and in catalytic converters for car exhausts. I have an atomic number ok 78, my atomic weight is 195.09 (when rounded 195) and a symbol of Pt. Who am I Im platinum of coarse! Platinum is a member of the six transition elements in Group V of the ...
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Properties Of The Elements
679 wordsDimitri Mendeleev & The Periodic Table Derived by Dimitri Mendeleev, the periodic table may be one of the most informational tables contained in chemistry. By leaving gaps in the columns and rows, Mendeleev was allowing for the discovery of undiscovered elements of that time. From the properties of the elements surrounding these gaps, Mendeleev was able to predict the properties of these undiscovered elements. Finally, when other scientists discovered the tools of the periodic table, Mendeleev's...
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Compounds And Ions In Solution Transition Metals
448 wordsThanks to Doc Brown of Chem Help. Net for these great chemistry revision notes. Check out his site for more! (a) High Melting Point and Boiling Point The bonding between the atoms in transition metals is very strong. The strong attractive force between the atoms is only weakened at high temperatures, hence the high melting points and boiling points. For example: iron melts at 1535 C and boils at 2750 C BUT a Group 1 Alkali Metals such as sodium melts at 98 C and boils at 883 C. (b) High density ...
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Metal Element
1,372 wordsClassification of Elements: The Periodic Table Arranging The Elements: The Russian chemist Dmitri Mendeleev uncovered evidence that consisted of a huge collection of facts about the 63 elements that had been discovered by the mid-1800's. His clues had to do with the physical and chemical properties of these elements. Mendeleev was convinced that he could arrange the elements so that those with similar properties were grouped together. Mendeleev made a card for each element including the atomic m...
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First Source Of Alkali Metal Compounds
1,092 wordsThe six chemical elements that are known as alkali metals are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and the extremely rare radioactive substance called francium (Fr). Cesium and Francium are the most reactive elements in this group. The word alkali comes from the Arabic word al-q ili, meaning plant ashes. Plant ashes were the first source of alkali metal compounds. The alkali metals occupy the first column of the periodic table of the elements. Since these metals ...
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Non Metal Element In Our Compound
368 wordsI. Identifying an Unknown Compound Purpose / Problem: In this lab we had to figure out what our mystery compound was by performing two tests. One of the tests was called the Flame Test, which we use to find out the metal element in the compound. It is used to find the metal because each metal gives off its own unique flame color. The other test is called the Precipitate Test, which we use to find out the non-metal element in our compound by adding silver nitrate to it. It's used to find the non-...
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Unalloyed Metal Of Magnesium
1,385 wordsMagnesium is the twelfth element on the periodic table. It is located in the second group called the alkaline earth metals. Natural magnesium contains three different isotopes, and there are twelve others that are recognized. Seawater is a rich source of magnesium in the form of salt. Magnesium is the eighth most abundant element in the earth's crust. Magnesium readily ignites upon heating in air and burns with a dazzling white flame. To extinguish the flame water should not be used. Alkaline ea...
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14 Transition Metal Element
323 words1. periodic law-law that states the physical & chemical properties of the elements are periodic functions of their atomic numbers 2. group-column of elements in the periodic table; family 3. family-column of elements in the periodic table; group 4. period-horizontal row of elements in the periodic table 5. metal-element that is a good conductor of heat & electricity, is shiny, has a high melting point, tends to lose electrons 6. luster-shininess 7. ductile-able to be drawn into a thin wire 8. ma...
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Chemistry Of Technetium
461 wordsTechnetium Nalin BalanNUCL 200 Paper due 02/07/97 Atomic Number: 43 Atomic Symbol: Tc Atomic Weight: (97) Electron Configuration: -18-13-2 History, Properties and Uses: (Gr., artificial) Element 43 was predicted on the basis of c table, and was erroneously reported as having been discovered in 1925, at which time it was named masurium. The element was actually discovered by Perrier and Segre in Italy in 1937. It was found in a sample of molybdenum, which was bombarded by deut er ons in the Berke...
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Element Lithium And Its Compounds
1,125 wordsIn 1817, an aging Swedish chemist was pouring over his work on a late afternoon in Stockholm, Sweden. He was analyzing a strange ore named Petalite that had been procured from an island off the coast of Sweden called Ut"o. The ore Petalite (which is now recognized to be Li Al (Si 2 O 5) 2) had been discovered by a Brazilian scientist, Jos'e Bonif'a cio de And rada e Silva towards the end of the 18th century on a visit to Sweden. This Swedish scientist, Johann August Arfvedson, detected traces of...
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1 Acid Metal Salt Hydrogen 2
1,735 wordsCHEMISTRY STUDY NOTES: Module 1: The Chemical Earth 1.1 Construct word and balanced formulae equations of chemical reactions as they are encountered. STEPS: 1. General equation 2. Word equation 3. Formula equation 4. Balanced equation 5. Ionic equationNeutralisation: 1. base + acid salt + water 2. calcium hydroxide (aq) + hydrochloric acid (aq) calcium chloride + water 3.4. 5.1. base + acid salt + water 2. ammonium hydroxide + hydrochloric acid ammonium chloride + water 3.4. 5. Displacement of M...
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Deposits Of Concentrated Uranium Ore
569 wordsUranium the 92nd element and a member of Group 3 b in the periodic table. Its atomic weight is 238.029. Its name and chemical symbol, U, are derived from Uranus, because that planet was discovered a few years before the discovery of the element. A compound of uranium (uranium oxide) was discovered in a uranium ore, pitchblende, by German chemist M.H. Klaproth in 1789. The German thought that he had found a new element. This was not achieved until 1841, when the French chemist E.M. Peli got reduc...
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Change In The Identity Of A Substance
663 wordsStep's to the scientific method 1. Observing- observing is the use of the senses to obtain information. Observation often involves making measurements and collecting data. The data may be descriptive or numerical in nature. 2. Formulating Hypotheses- The hypothesis serves as a basis for making predictions and for carrying out further experiments. Hypotheses are often drafted as "if-then" statements. The "then" part of the hypothesis is a prediction that is the basis for testing by experiment. 3....
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Alchemy's Mystical And Astrological Attempts
702 wordsAlchemy -The Predecessor of Modern Chemistry There are many ways to examine the subject of alchemy, including alchemy as a source of symbolism, psychology, and mysticism. It has also been an influence on the world view of various writers, artist, and musicians. The focus of this report is alchemy as a pre-chemistry, which gave a new impulse towards the preparation of medicinal remedies and also was a major influence on today's scientific investigations. Alchemy is an ancient art, practiced in th...
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