Each of the following were important contributors to what we know about atomic structure, the elements or radioactivity: Bohr Bequerel Curie Dalton The Greeks Moseley Thomson Rutherford Select from the list above one answer to each of the following. (a) Who proposed the early theory that matter consists of the four elements: earth, air, fire and water? (b) Who described atoms as small indivisible particles? (c) Who identified electrons as sub-atomic particles? (d) Who is credited with the discovery of the nucleus of the atom? (e) Who proposed a model for the atom in which the electrons circulated around the nucleus in fixed energy levels or orbits? (f) Who discovered that uranium salts emitted radiation? (g) Who received a Nobel Prize for the isolation of the elements polonium and radium? (h) Whose determination of the charge on the nuclei of atoms allowed the systematic arrangement of the elements in the modern periodic table?

Leaving Cert Chemistry Periodic Table: Each of the following were impor

Each of the following were important contributors to what we know about atomic structure, the elements or radioactivity: Bohr Bequerel Curie Dalton The Greeks Moseley Thomson Rutherford Select from the list above one answer to each of the following - Leaving Cert Chemistry - Question 5 - 2005

Question 5

Each of the following were important contributors to what we know about atomic structure, the elements or radioactivity: Bohr Bequerel Curie Dalton The Gree... show full transcript

Worked Solution & Example Answer:Each of the following were important contributors to what we know about atomic structure, the elements or radioactivity: Bohr Bequerel Curie Dalton The Greeks Moseley Thomson Rutherford Select from the list above one answer to each of the following - Leaving Cert Chemistry - Question 5 - 2005

Step 1

Who proposed the early theory that matter consists of the four elements: earth, air, fire and water?

96%

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Answer

The Greeks proposed the early theory that matter is composed of four elements: earth, air, fire, and water.

Step 2

Who described atoms as small indivisible particles?

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Answer

Dalton described atoms as small indivisible particles, forming the foundation of modern atomic theory.

Step 3

Who identified electrons as sub-atomic particles?

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Answer

Thomson identified electrons as sub-atomic particles through his experiments with cathode rays.

Step 4

Who is credited with the discovery of the nucleus of the atom?

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Answer

Rutherford is credited with the discovery of the nucleus of the atom, established through his gold foil experiment.

Step 5

Who proposed a model for the atom in which the electrons circulated around the nucleus in fixed energy levels or orbits?

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Answer

Bohr proposed a model for the atom where electrons orbit the nucleus in defined energy levels.

Step 6

Who discovered that uranium salts emitted radiation?

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Answer

Bequerel discovered that uranium salts emitted radiation, leading to the field of radioactivity.

Step 7

Who received a Nobel Prize for the isolation of the elements polonium and radium?

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Answer

Curie received a Nobel Prize for her work in isolating the radioactive elements polonium and radium.

Step 8

Whose determination of the charge on the nuclei of atoms allowed the systematic arrangement of the elements in the modern periodic table?

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Answer

Moseley's determination of the charge on the nuclei allowed for the systematic arrangement of elements in the modern periodic table.

Each of the following were important contributors to what we know about atomic structure, the elements or radioactivity: Bohr Bequerel Curie Dalton The Greeks Moseley Thomson Rutherford Select from the list above one answer to each of the following - Leaving Cert Chemistry - Question 5 - 2005

Who proposed the early theory that matter consists of the four elements: earth, air, fire and water?

Who described atoms as small indivisible particles?

Who identified electrons as sub-atomic particles?

Who is credited with the discovery of the nucleus of the atom?

Who proposed a model for the atom in which the electrons circulated around the nucleus in fixed energy levels or orbits?

Who discovered that uranium salts emitted radiation?

Who received a Nobel Prize for the isolation of the elements polonium and radium?

Whose determination of the charge on the nuclei of atoms allowed the systematic arrangement of the elements in the modern periodic table?

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