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Democritus 300 BC
Democritus
he said that he can break them into a piece of matter
300 BC
he use the atoms to make his discovery and he belive that they are unbreakable into smaller parts .
he is the person that tiny atoms and he thought they look velcro -
Aristole
Aristole
335 BC
he discover that all substance were made of small amount of the four elementt of matter
He use fire , water ,and air plus he toke 2,000 years to look over it and he really didnt belive in this .
he thin they are small particles made on eath -
Dalton
Dalton
he said atoms are seen an soild indestructibe sphere and does not inculde the existence of nucleaus
1800 BC
He use natu and he use of matter of chemical to separating them atoms
he thinkk they look like Billiard Balls ( atoms that are very close instead of one -
Thomson
Thomson
atoms are soild spheres made up of a solid postive mass
1897
he used electrons and after he did that he used a vacum tube or discover cathdoe rays.
"J.J. Thomson Biography." Bio.com. A&E Networks Television, n.d. Web. 06 Mar. 2014. -
Schrodinger
Schrodinger
he didnt discover the atom but the atom grew out of decades
1926-1927
he used electrons and photons to figure them out -
Rutherford
Rutherford
he doscover that not the smallest uint mass and he keep testing it
1911
he use the atomic model to do all his discovery and the rest
of the element
Ernest Rutherford Biography." Bio.com. A&E Networks Television, n.d. Web. 06 Mar. 2014. -
Bohr
Bohr
1912
the atom had a miniature,dense, nucleus surround by a cloud of nearly weight electrons.
he used electrons orbit same by the work and he extened the model of hydrogen to give an approximate model for heavyer atoms.
Niels Bohr Biography." Bio.com. A&E Networks Television, n.d. Web. 05 Mar. 2014.
