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Biblioteka

Re-Take Copy of Honor's Separation of Mixtures & Early Ideas About Matter (10/14/2024)

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Posljednje ažuriranje about 1 year ago
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Pitanje 1
1.

What process might you use to separate salt from water in a saltwater solution?

Pitanje 2
2.

Which technique is best suited for separating pigments in a plant extract?

Pitanje 3
3.

Which method is appropriate for separating a mixture of alcohol and water?

Pitanje 4
4.

Categorize the following separations techniques most suited for these mixtures: Salt water, Alcohol and water, Inks, Coffee grounds and water.

  • Coffee grounds and water

  • Inks

  • Salt water

  • Alcohol and water

  • Filtration

  • Chromatography

  • Evaporation

  • Distillation

Pitanje 5
5.

Pair the atomic structure with the appropriate description

Stavka koja se može prevućiarrow_right_altOdgovarajuća stavka

Protons

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The dense center of the atom

Neutrons

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Negatively charged particles around the nucleus

Electrons

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Positively charged particles in the nucleus

Nucleus

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Neutral particles in the nucleus

Pitanje 6
6.

Match the scientist to the correct idea or experiment about atomic structure they contributed

Stavka koja se može prevućiarrow_right_altOdgovarajuća stavka

Niels Bohr

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Discovered the nucleus using his gold-foil experiment

J.J. Thomson

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Proposed that electrons orbit the nucleus in specific layers

Ernest Rutherford

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Identified the electron, leading to the 'plum pudding' model

Pitanje 7
7.

John Dalton, in his atomic theory, proposed that atoms can be destroyed in chemical reactions.

Pitanje 8
8.

Ernest Rutherford's gold foil experiment proved that an atom is mostly empty space with a dense center, now known as the nucleus.

Pitanje 9
9.

J.J. Thomson is credited for the discovery of the electron through his cathode ray experiments.

Pitanje 10
10.

Compare and contrast Thomson's "Plum Pudding" atomic model with Rutherford's "nuclear" atomic model.