1) All matter is made of atoms. Atoms are indivisible and indestructible.
2) All atoms of a given element are identical in mass and properties
these two have been modified
David said that atom can be created or destroy by radio activivity
(1)Atom can be created or destroyed through radioactivity.(2)isotope occurs in an element
Dalton theory stated that atom cannot be divided. It was proved false and modified later.
These affirmations are not valid today:
· All atoms of a given element are identical. · A given compound always has the same relative numbers of types of atoms.
all matter is composed of atoms
atoms are tiny indivisible particles
protons,neutrons and electrons are the sub atomic particles
John Dalton is best known for work on atomic theory. While his models were very similar to the speculation of the Greeks made centuries before, his theory differentiated in the idea that chemical combination takes place between particles of different weights.
john dalton develop an atomic theory in 1803, based on idea of the atomic exsiting
1) elements are composed of atoms 2) atoms of same elements = 3) atoms of different elements not = 4) atoms fomr compounds in definite ratios H2O
Niels Bohr.Father Roger Boscovich is often credited as the father of modern atomic theory, according to Thomas E. Woods, Jr., author of the book How the Catholic Church Built Western Civilization
dalton wasnt the one who experimented with gold, rutherford was the one who did the gold foil experiment.
protons,neutrons and electrons are the sub atomic particles
John Dalton. He put forward the atomic theory in 1808.
Atomic theory was founded by John Dalton. He proved this theory in 1803.
John Dalton first pursued research into atomic theory. He was the first person to propose the existence of the atomic structure.
john dalton developed the atomic theory , which he published in 1803
John Dalton is best known for work on atomic theory. While his models were very similar to the speculation of the Greeks made centuries before, his theory differentiated in the idea that chemical combination takes place between particles of different weights.
john dalton develop an atomic theory in 1803, based on idea of the atomic exsiting
1) elements are composed of atoms 2) atoms of same elements = 3) atoms of different elements not = 4) atoms fomr compounds in definite ratios H2O
John Dalton was BEST remembered for his pioneering work in the development of modern atomic theory.
scientific method used in the development of atomic theory
Niels Bohr.Father Roger Boscovich is often credited as the father of modern atomic theory, according to Thomas E. Woods, Jr., author of the book How the Catholic Church Built Western Civilization