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What is the correct order of scientists in order of their work related to the atomic theory from earliest to most recent?
Democritus, John Dalton, JJ Thomson, Ernest Rutherford, and Neils Bohr
In the model nicknamed "the solar system model" what are the electrons like?
The planets
This man is called the "Father of the Atomic Theory" because he was the first person to prove atoms exist.
John Dalton
This Greek philosopher stated matter was made of four main elements - water, air, earth and fire.
Aristotle
Which model of the atom is the most up to date model?
Quantum model
Which scientist claimed that the atom was a small, dense, solid sphere?
John Dalton
Who proposed that electrons move around the nucleus in circular orbits?
Niels Bohr
Place the following atomic models in order, from earliest to latest: A) Rutherford B) Thomson C) Dalton
C, B, A
Whose model suggested that negative particles were mixed in with positively charged material - like plums on a pudding?
J.J. Thompson
Which scientist proposed that all matter is composed of atoms, which he assumed were indivisible and indestructible building blocks of nature.
John Dalton
Which model was created after the discovery of the electron cloud?
C
Which model was created after the discovery of the nucleus?
B
Which one of these is Dalton's Model?
Who was the first person to "think" of an atom?
Democritus
Dalton developed the first scientifically tested atomic theory. (T/F)
True
Aristotle and other early Greek philosophers thought that matter was composed of four elements: air, earth, fire, and water(T/F)
True
This was the first model of the atom ever proposed. It was simple and described atoms as tiny spheres that could not be broken down into smaller pieces.
Democritus model
Who were the scientists that proposed a highly dense nucleus surrounded by electron clouds?
Schrodinger, Heisenberg and Louis De Broglie
What is the meaning of the greek word "atomos"?
Indivisible or uncuttable
In the atomic model nicknamed the "plum pudding" model, what do the plums represent?
Electrons
Who was the first to propose that matter consist of indivisible particles of matter called atoms?
Democritus
Which scientist proposed the "plum pudding model" of the atom?
J.J. Thompson
Ernest Rutherford discovered that atoms were mostly
Empty space
This model was developed after J.J. Thompson discovered electrons, a particle smaller than an atom. It shows electrons floating freely in a positive region.
The "Plum Pudding Model" of the atom
This model was the first to show a nucleus, consisting of protons and neutrons. Electrons surround the nucleus but are not shown in distinct energy levels.
Planetary model or Rutherford's model
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