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Honor's Separation of Mixtures & Early Ideas About Matter

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Last updated 11 months ago
9 questions
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Question 9
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Compare and contrast Thomson's "Plum Pudding" atomic model with Rutherford's "nuclear" atomic model.

Which method of separation would be ideal for a mixture of water and sand?
Chromatography
Distillation
Evaporation
Filtration
Which method is used to separate dyes in ink?
Filtration
Chromatography
Distillation
Evaporation
What separation method would be most effective in separating ethanol from a solution of ethanol and water?
Chromatography
Evaporation
Distillation
Filtration
Pair the atomic structure with the appropriate description
Neutrons
The dense center of the atom
Protons
Negatively charged particles around the nucleus
Nucleus
Positively charged particles in the nucleus
Electrons
Neutral particles in the nucleus
Match the scientist to the correct idea or experiment about atomic structure they contributed
J.J. Thomson
Discovered the nucleus using his gold-foil experiment
Ernest Rutherford
Proposed that electrons orbit the nucleus in specific layers
Niels Bohr
Identified the electron, leading to the 'plum pudding' model
John Dalton, in his atomic theory, proposed that atoms can be destroyed in chemical reactions.
True
False
Ernest Rutherford's gold foil experiment proved that an atom is mostly empty space with a dense center, now known as the nucleus.
True
False
J.J. Thomson is credited for the discovery of the electron through his cathode ray experiments.
True
False