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John Dalton's Atomic Theory
Transcript of John Dalton's Atomic Theory
2. It is impossible to divide or destroy an atom.
3. All atoms of the same elements are alike.
4. Atoms of different elements are different.
5. Atoms of different elements combine to form a compound. These atoms have to be in definite whole number ratios. John Dalton's atomic theory: Dalton's Element Symbols Dalton's Experimentation Done By: 1. Background information
2. Dalton's Atom Discovery
3. Dalton's Experimentation
4. Atomic Model Structure
5. Discovery of the Theory
6. Dalton's Atomic Theory
7. Credentials John Dalton - Born into a humble Quaker family
- Public lecturer from age 12
- Researched into the elements
- Pioneered the development of the modern atomic structure theory Dalton's atomic model Abirami Devi (14)
Lee Wen Ting (9)
Louise Lee (13)
Mok Qiu Lin (16)
Trudy Lim (11) Model representation
of the various elements Dalton's discovery of Atomic Theory Interest in meteorology- extensive studies regarding nature of atmospheric gases
1793-1839: Daily weather records- Interest in the gases and ultimate components in the air
Theory on all matter consisting of indivisible and indestructible particles. Starts using symbols to represent the atoms of different elements in 1803 (first in modern chemistry)
Logbook entry titled 'Observations on the Ultimate Particles of Bodies and their Combinations'
Table of 21 elements arranged by atomic mass, with 36 different symbols eventually Dalton's Background Research John Dalton studied the research previously done by Proust and Lavoisier, and disputed some of the theories in Lavoisier’s Law of Definite Proportions, but agreeing with others and coming up with his own Law of Multiple Proportions, which eventually led to the atomic theory. Dalton's theory on atoms and compounds Atoms combined with each other with DEFINITE combinations (e.g. one atom of element X combines with one atom of element Y)
Individual atoms are single atoms
Compound with 2 atoms is a binary compound
Compound with 3 atoms is a ternary compound so on and so forth...