• Living Thing Cell Cells One
    4,633 words
    Living things make up the world as we know it. Living things are involved in our life constantly, seeing that we are alive. There are five characteristics that are common to all living things. Living things are made up of one or more cells. Each cell is made up of living matter and is separated by a barrier that encloses the cell from its surroundings. However, there are many different kinds of cells that make up living things. A single cell can be one organism. These organisms are known as uni...
  • The Periodic Table Valence Electron
    1,279 words
    Classification 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...
  • Quantum Vs Classical Mechanics
    558 words
    Classical and Quantum mechanics are the two main fields of mechanics in physics. Classical mechanics came a few hundred years before Quantum mechanics. Subsequently it is less accurate and less reliable then the more recent mechanic field of Quantum mechanics. Despite being outdated, Classical mechanics can still be used for many everyday problems with bigger and slower moving objects. However, when dealing with extremely fast moving or small subatomic particles a Classical approach will not pr...
  • Transition Metals Electron Configuration
    539 words
    Name Symbol Electron Configuration Scandium S Titanium TVanadiuChromium C Manganese MIron F Cobalt C Nickel Copper C 10 4 s 1 Zinc Z 10 4 s 2 As Chromium and Copper are in the fourth period we would expect it to follow the same pattern as the other elements in the same periods as in the 4 s sub shell is filled first rather than the 3 d sub shell. Chromium (Cr) Expected Electronic ConfigurationActual Electron Configuration The arrangement [Ar] 3 d 5 4 s 1 is more stable than the arrangement [Ar] ...