The evolution of atomic theory is marked by significant contributions from scientists like Cannizzaro, Mendeleev, and Rutherford. Cannizzaro corrected Berzelius's atomic weight errors, leading to a better understanding of molecular composition. Mendeleev's periodic table predicted elements and reinforced atomic theory. Rutherford's experiments led to the nuclear model of the atom, changing the concept of atomic structure.
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1
The concept of ______ molecules, which could split into single atoms during reactions, was advocated by Cannizzaro to address the inconsistencies in earlier atomic theories.
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2
19th-century atomic skepticism
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3
Equivalent weights vs. atoms
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4
Discovery of molecular internal architecture
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5
The phenomenon where molecules with the same ______ have different characteristics is known as ______.
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6
______'s experiments with silver fulminate and silver cyanate, which shared the same composition but exhibited different properties, contributed to the acknowledgment of ______ by Berzelius.
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7
The idea that isomers are composed of the same atoms but in different arrangements was an early concept leading to ______, proposed by ______.
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8
______ introduced the ______ carbon bonding model, which helped explain the spatial arrangement of atoms in molecules and the existence of various isomers.
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9
The ______ carbon bonding model was key in understanding why a compound like pentane could exist in ______ distinct forms.
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10
Mendeleev's prediction of elements
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11
Periodic table's support for valency
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Systematized understanding of how atoms combine, reflecting fixed valence of elements.
12
Periodic table and chemical reactivity
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Provided framework for predicting how elements react chemically, aiding in reaction analysis.
13
______ motion is the random movement of particles like ______ grains in a liquid, first noted by the botanist ______ ______.
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Brownian pollen Robert Brown
14
In 1905, ______ ______ provided a theoretical explanation for this motion, suggesting it was due to impacts with ______ molecules.
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Albert Einstein water
15
______ ______'s experimental validation of Einstein's hypothesis offered quantitative support for the ______ ______ of gases.
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16
The kinetic theory, which explains gas properties through molecule movement, dates back to ______ ______ in ______.
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17
Founders of statistical mechanics
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18
Josiah Willard Gibbs's role in statistical mechanics
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19
Impact of statistical mechanics on understanding matter
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20
In ______, J. J. Thomson's work with cathode rays resulted in the discovery of ______, initially termed 'corpuscles'.
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21
Rutherford's key experiment name
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22
Flaw in plum pudding model according to Rutherford
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23
Rutherford's atomic model analogy
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