history of atomic theory year 8 science
TRANSCRIPT
Year 8 Science
History of Atomic Theory
Dr Lakshmi Sharma
Lesson Objective: To gain knowledge of the atomic theory & corresponding theorists.www.drlakshmisharma.com
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What is Atomic Theory?
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Atomic Theory
Atomic Theory - the nature of matterMatter is composed of discrete units - atoms
Lakshmi Sharma History of Atomic Theory
Can You Name any Famous Atomic Theorists?
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ThomsonRutherfordBohrMillikanChadwickSchrodinger
Nobel Prize Winners
Lakshmi Sharma History of Atomic Theory
Lakshmi Sharma History of Atomic Theory
J.J Thomson 1856-1940 English
Discovery & Identification of the Electron
1906 Nobel Prize in Physics
J.J Rutherford 1871-1937 English (N.Z Born)
Atoms have their charge concentrated in a very small nucleus - proton1908 Nobel Prize in Chemistry
Lakshmi Sharma History of Atomic Theory
N.H. Bohr 1885-1962 Danish
Electrons revolve in stable orbits around the atomic nucleus
1922 Nobel Prize in Physics
Lakshmi Sharma History of Atomic Theory
R.A. Millikan 1868-1953 American
Measured the Charge of the Electron
1923 Nobel Prize in Physics
Lakshmi Sharma History of Atomic Theory
J. Chadwick 1891-1974 English
Discovered the Neutron – no charge
1935 Nobel Prize in Physics
Lakshmi Sharma History of Atomic Theory
E. Schrodinger 1887-1961 Austrian
Electron Cloud Model dense nucleus surrounded by a cloud of electrons at various levels in orbitals
1933 Nobel Prize in Physics
Lakshmi Sharma History of Atomic Theory
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Go & Create Your Chemistry Timeline Groups of 2/3Try to answer all the questions provided
Chemistry Timelines
Lakshmi Sharma History of Atomic Theory
Hope You Enjoyed the Lesson!