Ernest Rutherford discovered that atoms were mostly
Empty space
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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
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trap
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shark
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rocket
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lifesaver
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15
Who proposed that electrons move around the nucleus in circular orbits?
Niels Bohr
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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
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banana
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gold
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rocket
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banana
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15
Which model was created after the discovery of the electron cloud?
C
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Who were the scientists that proposed a highly dense nucleus surrounded by electron clouds?
Schrodinger, Heisenberg and Louis De Broglie
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What is the meaning of the greek word "atomos"?
Indivisible or uncuttable
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This man is called the "Father of the Atomic Theory" because he was the first person to prove atoms exist.
John Dalton
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This Greek philosopher stated matter was made of four main elements - water, air, earth and fire.
Aristotle
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Who was the first to propose that matter consist of indivisible particles of matter called atoms?
Democritus
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Which model was created after the discovery of the nucleus?
B
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15
Which scientist proposed that all matter is composed of atoms, which he assumed were indivisible and indestructible building blocks of nature.
