.
Name: Cadmium
Symbol: Cd
Atomic Number: 48
Atomic Weight: 112.412
Group: Transition metals
Date Discovered: 1817
Discovered By: Friedrich Strohmeyer
Name: Calcium
Symbol: Ca
Atomic Number: 20
Atomic Weight: 40.078
Group: Alkaline earth metals
Date Discovered: 1808
Discovered By: Humphry Davy
Name: Californium
Symbol: Cf
Atomic Number: 98
Atomic Weight: (251)
Group: Actinide
Date Discovered: 1950
Discovered By: Glenn Seaborg, Stanley Thompson, Kenneth Street, Jr., and Albert Ghiorso
Name: Carbon
Symbol: C
Atomic Number: 6
Atomic Weight: 12.011
Group: Nonmetals
Date Discovered: prehistoric
Discovered By: unknown
Name: Cerium
Symbol: Ce
Atomic Number: 58
Atomic Weight: 140.115
Group: Lanthanide
Date Discovered: 1804
Discovered By: Jöns Berzelius and Wilhelm Hisinger, and independently by Martin Klaproth
Name: Cesium
Symbol: Cs
Atomic Number: 55
Atomic Weight: 132.9054
Group: Alkali metals
Date Discovered: 1860
Discovered By: Robert Bunsen and Gustav Kirchhoff
Name: Chlorine
Symbol: Cl
Atomic Number: 17
Atomic Weight: 35.4528
Group: Halogens
Date Discovered: 1774
Discovered By: Karl Scheele
Name: Chromium
Symbol: Cr
Atomic Number: 24
Atomic Weight: 51.9962
Group: Transition metals
Date Discovered: 1797
Discovered By: Louis-Nicolas Vauquelin
Name: Cobalt
Symbol: Co
Atomic Number: 27
Atomic Weight: 58.9332
Group: Transition metals
Date Discovered: 1730
Discovered By: Georg Brandt
Name: Copper
Symbol: Cu
Atomic Number: 29
Atomic Weight: 63.546
Group: Transition metals
Date Discovered: prehistoric
Discovered By: unknown
Name: Curium
Symbol: Cm
Atomic Number: 96
Atomic Weight: (247)
Group: Actinide
Date Discovered: 1944
Discovered By: Glenn Seaborg, Ralph James, and Albert Ghiorso
Name: Darmstadtium
Symbol: Ds
Atomic Number: 110
Atomic Weight: (271)
Group: Transition metals
Date Discovered: 1994
Discovered By: team at the Heavy-Ion Research Laboratory, Darmstadt, Germany
Name: Dubnium
Symbol: Db
Atomic Number: 105
Atomic Weight: (262)
Group: Transition metals
Date Discovered: 1970
Discovered By: claimed by Albert Ghiorso and coworkers (disputed by Soviet workers)
Name: Dysprosium
Symbol: Dy
Atomic Number: 66
Atomic Weight: 162.500
Group: Lanthanide
Date Discovered: series 1886
Discovered By: Paul Lecoq de Boisbaudran
Online Encyclopedia Blog For Kid's Research In Sciences, Health, Environment and Technology
Matter is composed of atoms or groups of atoms called molecules. The arrangement of particles in a material depends on the physical state of the substance. In a solid, particles form a compact structure that resists flow. Particles in a liquid have more energy than those in a solid. They can flow past one another, but they remain close. Particles in a gas have the most energy. They move rapidly and are separated from one another by relatively large distances.
Popular Posts
-
. Many similarities exist between electric and magnetic phenomena. A magnet has two opposite poles, referred to as north and south. Opposit...
-
. The relationship between current, voltage, and resistance is given by Ohm’s law. This law states that the amount of current passing throu...
-
Quantum Theory, in physics, description of the particles that make up matter and how they interact with each other and with energy. Quantum ...
-
. Periodic Table, table of the chemical elements arranged to illustrate patterns of recurring chemical and physical properties. Elements, su...
-
Electromagnetic Radiation is the energy waves produced by the oscillation or acceleration of an electric charge. Electromagnetic waves have ...