Unit 3: Atomic Structure

Which scientist was the first person responsible for proposing the idea of atoms?

• Democritus

• John Dalton

• Ernest Rutherford

• J.J. Thomson

• Niels Bohr

Which scientist was the first person responsible for proposing the discovery of the electron?

• Democritus

• John Dalton

• Ernest Rutherford

• J.J. Thomson

• Niels Bohr

Which scientist was the first person responsible for proposing the discovery of the nucleus?

• Democritus

• John Dalton

• Ernest Rutherford

• J.J. Thomson

• Niels Bohr

Tags

NGSS.HS-PS1-8

Which scientist claimed that the atom was a small, dense, solid sphere?

• Democritus

• John Dalton

• Ernest Rutherford

• J.J. Thomson

• Niels Bohr

Which scientist's model is referred to as the Plum Pudding Model?

• Democritus

• John Dalton

• Ernest Rutherford

• J.J. Thomson

• Niels Bohr

Tags

NGSS.MS-PS1-1

Which scientist proposed that the atom was indivisible using the word "atomos"?

• Democritus

• John Dalton

• Ernest Rutherford

• J.J. Thomson

• Niels Bohr

Which model of the atom is the most up to date model?

• The Billiard Ball Model

• The Plum Pudding Model

• The Planetary Model

• The Quantum Mechanical Model

• The Nuclear Model

What is Neils Bohr's contribution to the atomic theory?

• Created the atomic theory

• Created a model of the atom with electrons moving around the nucleus in a fixed orbits

• Discovered that the proton had a positive charge

• Believed that atoms of a given element are identical

• Discovered the electron

The following model belongs to which scientist?

• Bohr

• Rutherford

• Thomson

• Democratus

Which of the following was NOT one of the points of Dalton's atomic theory?

• All matter is made of atoms

• Atoms are made of protons, electrons and neutrons

• all atoms of the same element are identical

• atoms combine in small whole number ratios to make compounds