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Chemistry

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mols

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Mole
Amount of substance
Wilhelm Ostwald
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The mole is a unit of measurement for the amount of substance or chemical amount. It is one of the base units in the International System of Units, and has the unit symbol mol.[1] The name mole is an 1897 translation[2][3] of the German unit Mol, coined by the chemist Wilhelm Ostwald in 1893,[4] although the related concept of equivalent mass had been in use at least a century earlier. The name is derived[5] from the German word Molekül (molecule).

Chemistry

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Chem Kinetic theory

www.leapfrog.com Code: SS96.03 ? 2002 LeapFrog, Inc. All Rights Reserved. Page 1 of 3 Social Studies Silver Burdett Ginn Our Country Chapter 3 The First Americans OVERVIEW This chapter discusses how the first settlers came to the Americas. It also describes the lifestyle of the Native Americans and the civilizations of the Mayas, the Aztecs, and the Incas. KEY TERMS ? archaeologist: scientist who studies ancient civilizations through artifacts ? artifact: remnants from the past left behind by earlier inhabitants ? causeway: road that is raised above water to connect two pieces of land ? desert: dry region with almost no vegetation ? empire: group of countries ruled by an emperor ? environment: surrounding

Arrangement of Electrons in Atoms Vocabulary Terms

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electron configuration

Amplitude ? magnitude of change within an oscillating system of the oscillation variable with each oscillation Angular momentum quantum number ? the quantum number that indicates the shape of an orbital Atomic emission spectrum ? the range of the frequencies of electromagnetic radiation Aufbau Principle ? the principle that states that the structure of each successive element is obtained by adding one proton to the nucleus of the atom and one electron to the lowest-energy De Broglie?s Relation ? said that particles can exhibit wave-like behaviour Electromagnetic radiation ? the radiation associated with an electric and magnetic field. Varies periodically and travels at the speed of light Electromagnetic spectrum ?all of the frequencies or wavelengths of electromagnetic radiation

easy way to remember conversion chart

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good way to remember the conversions... GxxMxxKHD bu dcmxxuxxnxxp gee x x maybe x x kangaroos have dandrufft but you dont care much x x u x x need x x pantene giga, place holder, place holder, mega, place hold, place hold, kilo hepta deca base unit deci centi milli, place hold, place hold, micro, place hold, place hold, nano, place hold, place hold, pico

Ions

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Cation H+ Hydrogen Li+ Lithium Na+ Sodium K+ Potassium Cs+ Cesium Be2+ Beryllium Mg 2+ Magnesium Ca2+ Calcium Ba2+ Barium Al3+ Aluminum Ag+ Silver Anion H- Hydride F- Fluoride Cl- Chloride Br- Bromide I- Iodide O2- Oxide S2- Sulfide N3- Nitride P3- Phosphide Ion Fe3+Fe2+Iron (III/II) Cu2+Cu+Copper(II/I)?Co3+Co2+Cobalt(III/II) Sn4+Sn2+Tin(IV/II)?Pb4+Pb2+Lead(IV/II) Hg2+Hg2^2+Mercury(II/I) Ag+Silver Zn2+Zinc Cd2+Cadmium Ion NH4+ Ammonium NO2- Nitrite NO3- Nitrate SO32- Sulfite SO42- Sulfate HSO4- Bisulfate OH- Hydroxide CN- Cyanide PO43- Phosphate HPO42- Hydrogen phosphate H2PO4- Dihydrogen Phosphate --?NCS- Thiocyanate CO32- Carbonate HCO3- Bicarbonate ClO- Hypochlorite ClO2- Chlorite ClO3- Chlorate

Fun facts about Calcium

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Calcium
http://www.facts-about.org.uk/science-element-calcium.htm Name of Element : Calcium Symbol of Element : Ca Atomic Number of Calcium : 20 Atomic Mass: 40.078 amu Melting Point: 839.0 °C - 1112.15 °K Boiling Point: 1484.0 °C - 1757.15 °K Number of Protons/Electrons in Calcium : 20 Number of Neutrons in Calcium : 20 Crystal Structure: Cubic Density @ 293 K: 1.55 g/cm3 Color of Calcium : silvery Facts about the Definition of the Element Calcium The Element Calcium is defined as...

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