Essays Tagged: "Periodic Table"

Classificaion of Scandium and Zinc are not transitional metal base on their general chemistry and properties

IntroductionThe three series of elements situated in the periodic table following the alkaline earth metals are described as transition metal; this term is s ... his term is sometime extended to include the lanthanide and actinide elements.There position in the periodic table is between the s-block and p-block elements, their properties are transitional betwee ...

(8 pages) 59 0 4.4 Apr/2002

Subjects: Science Essays > Chemistry

The Fear of Science portrayed in Stevenson's "Dr. Jekyll and Mr. Hyde", Well's "The Time Machine", and Shelley's "Frankenstein"

adio waves,the electric motors, the first photograph and telephone, and the firstpublication of the periodic table. Science also caused an uproar insociety when Charles Darwin published The Origin of ...

(6 pages) 121 0 4.1 Jan/1996

Subjects: Literature Research Papers > European Literature

The Chemical Element Florine

e of fluorine.FACT FILEName: FluorineSymbol: FAtomic Number: 9Atomic Weight: 18.9984032(5.)Group in Periodic Table: 17Period in Periodic Table: 2Group Name: HalogenBlock in Periodic Table: p-blockStan ...

(3 pages) 47 0 4.0 Aug/2002

Subjects: Science Essays

Gallium

871Dmitrii Ivanovich Mendelev predicts the existance and properties of the elementafter zinc in the periodic table. He Gives it the name 'eka aluminium'.1875Paul Emile Lecoq de Boisbaudran discovers g ... rs earlier for eka-aluminium, thethen undiscovered element lying between aluminum and indium in his periodic table.Though widely distributed at the Earth's surface, gallium does not occorfree or conce ...

(2 pages) 30 0 2.6 Dec/1997

Subjects: Science Essays > Chemistry

Oxygen

mstones, as well as in all living organisms.Oxygen is a gaseous chemical element in Group VA of the periodic table. The chemical symbol for atomic oxygen is O, its atomic number is 8, and its atomic w ...

(10 pages) 205 0 3.5 Nov/1996

Subjects: Science Essays > Chemistry

The Reactivity of Metals and Their Discovery

man by the name of Mendeleev classified the metals and other elements into what is now known as the Periodic Table. He classified them into eight groups and a section called the Transition Metals. In ...

(7 pages) 69 0 2.4 Nov/2002

Subjects: Science Essays > Chemistry

Tungsten (the element).

uld be without certain types of wires, light bulbs and other things. Tungsten is the element on the periodic table that is represented by a 'W'. Without it we would in a different world. Tungsten has ... ld in a different world. Tungsten has an atomic number of seventy-four (74) and can be found on the periodic table to the right of Tantalum. Tungsten is an element with obviously 74 electrons and 74 p ...

(1 pages) 66 1 3.4 Feb/2003

Subjects: Science Essays > Chemistry

Periodicity.

One might ask what is periodicity? The word periodicity has many meanings. Periodicity is defined as the occurrence of sim ... city is defined as the occurrence of similar properties in elements having similar positions in the periodic table. Periodicity is found through certain periodic trends. There are four periodic trends ... eriodic table: atomic radius, ionization energy, electron affinity, and electronegativity.The first periodic trend is atomic radius. Atomic radius is found in several ways. The radii of some atoms are ...

(2 pages) 29 0 3.0 Nov/2003

Subjects: Science Essays > Chemistry

Periodic table to nature is like...?

The periodic table is a great example of how careful, systematic organization can lead to a better under ... , systematic organization can lead to a better understanding of the pattern found in nature. In the periodic table there can be a time when it just doesn't look right or was a bit weird. A group or pe ... s table very carefully. One would by having a chance to predict an element in a certain spot in the periodic table. This was done to make the table look better and make a bit more sense than it did be ...

(2 pages) 21 0 0.0 Nov/2003

Subjects: Science Essays > Chemistry

The Hindenburg Disaster

air by 200 000 cubic meters of hydrogen in 16 hydrogen cells. Hydrogen is the first element in the periodic table; it is an invisible, flammable gas that contains a single proton and one outer electr ...

(1 pages) 21 0 4.3 Dec/2003

Subjects: History Term Papers

This is a full report on elemental Mercury.

Mercury holds the 80th spot on the Periodic Table. It has 80 protons, 80 electrons, and 121 neutrons in a neutral atom. It is in the 6t ...

(1 pages) 31 0 3.0 Dec/2003

Subjects: Science Essays > Chemistry

This is a full report on elemental Mercury.

Mercury holds the 80th spot on the Periodic Table. It has 80 protons, 80 electrons, and 121 neutrons in a neutral atom. It is in the 6t ...

(1 pages) 26 0 4.0 Dec/2003

Subjects: Science Essays > Chemistry

Describe and explain the periodic trends of the period 3 elements Na - Ar

Properties of the elements of period 3 (Na - Ar) to illustrate the periodic trendsWhat is periodicity?Periodicity is the repeating pattern in which the elements are ar ... elements are arranged in the periodic table, these are some of the trends shown from looking at the periodicity of the elements.Atomic radiusAn atom doesn't have a fixed radius. The radius of an atom ... creases from left to right across the periods. This is becauseas you move from left to right in the Periodic Table the amount of positive charge in the nucleus increases. And because electrons are neg ...

(2 pages) 44 0 3.0 Jan/2004

Subjects: Science Essays > Chemistry

Magnesium.

r normal conditions. Magnesium is found in the alkali earth metal family, which is group two of the periodic table.In 1808 Sir Humphrey Davy isolated Magnesium. Today it is obtained mainly by electrol ... nesium is 24.305. Magnesium is found in the alkali earth metal family, which is in group two of the periodic table. Magnesium is in the third period on the periodic table and has 6 electrons and 6 pro ...

(2 pages) 33 0 2.2 Jan/2004

Subjects: Science Essays > Chemistry

Talks about the creation of the periodic table and some of its elements

The periodic table is one of the most important tools in science, or moreover, chemistry. In chemistry, ... ne of the most important tools in science, or moreover, chemistry. In chemistry, scientists use the periodic table for almost every experiment they test and over the years, the periodic table has prov ... ble has proven to be one of the best and most helpful discoveries in the field of science. Both the periodic table and the elements in the table have had a unique past and play a major role in the wor ...

(3 pages) 40 3 3.7 Feb/2004

Subjects: Science Essays > Chemistry

Information about Radon. Answers how it's used, where it's found, etc.

rties of elements, they have been organized in lots of different ways. Dmitri Mendeleev devised the periodic table that we use today. He lined up all of the known elements and then put them in increas ... mass, leaving room for those that he predicted were missing. There were some errors in Mendeleev's periodic table, however. When the elements are arranged in order of increasing atomic mass, several ...

(3 pages) 28 0 0.0 Mar/2004

Subjects: Science Essays > Chemistry

Thermal Decomposition of Metal carbonates

y series determines how fast this reaction occurs. The reactivity series is the order metals in the periodic table. The most reactive metals are placed at the top of the reactivity series. The least r ... u Transition MetalSilver Ag Transition MetalGold Au Transition MetalPlatinum Pt Transition MetalThe periodic table also shows which groups the metals belong to. The enclosed periodic table displays me ...

(12 pages) 36 0 5.0 Mar/2004

Subjects: Science Essays > Environmental Science

Metabolic Process notes These are just notes for

arrangement of the valence electrons.The need for stability - there are a group of elements in the Periodic Table called the noble gases that are inert (non-reactive). Except for helium that has 2 va ... alent Bonds-This bond types forms when two atoms share one or more pairs of electrons.-atoms in the periodic table have been assigned an electronegativity number (based upon experiments)-the larger th ...

(3 pages) 35 0 5.0 Mar/2004

Subjects: Science Essays > Biology > Human Biology

A Brief History of the Periodic Table

y all science classrooms will have at least one common thing posted on their walls; a poster of the periodic table. The periodic table is simply a chart of all known elements, arranging them as define ... them as defined by periodic law; it orders the elements by increasing atomic number, displaying the periodicity of chemical and physical properties in the elements. The first contributions to the peri ...

(3 pages) 48 0 4.8 Apr/2004

Subjects: Science Essays > Chemistry

PLATINUM report

t range from 190Pt to 198Pt. Platinum's atomic mass average is 195.08 amus. Platinum's place on the periodic table is period number 6, group number 10. Platinum has a fairly large Atomic number it is ...

(1 pages) 25 0 3.2 Apr/2004

Subjects: Science Essays > Atmospheric Sciences