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400
The start of dark ages
In the dark ages is was a contast war and plaque but through this rough time other countries were developing except them. -
Period: 400 to Jan 1, 1400
The Dark Ages
in the dark ages is a contast war and plaque but through this rough time other countries were developing except them. -
Jan 1, 1000
Alchemy
In the 7th century to process a territoral expansion that quickly brought them a empire and influnce from India to Andulsia -
Hydrogen
Hydrogen is a chemical element that has a chemical symbol H and a atomic number 1. -
Nitrogen
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Beryllium
Berylluim was discovered by Louis Nicolas Vauquelin in 1979 and is a atomic number 4 and the symbol is Be. -
Carbon
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Boron
Boron is a atomis number of 5. -
lithium
lithium is a chemical element and has a atomic numer of 3 and it is silver white and soft. -
Helium
Helium is a chemical element with a atomic number 2 and a chemical symobal He. it s also colouless and has no taste and no smell and its non toxtic. -
the plum pudding model
J.J thomas discovered the elctron , a nectivley charged more than one thousand more lighter than a hydrogent atom. -
Rutherford model
the Rutherford model is made of the atom thats devided by Ernest Rutherford. Rutherford directed the famouse Geiger-Marsden experiment which meant the plum pudding model J.J thomas of the atom was incorrect. -
The Bohr Model
In atomic physics, the Bohr model, introduced by Niels Bohr in 1913, depicts the atom as small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus -
The japan bombing
The Atomic bombing was in the cities of Hiroshima and Nagasaki contucted by the United States on the final stage of World War 2. The two events were only used by nuclear bombs. -
The Cold War
the cold war was dated from 1947 to 1991
