Atomic theory and Bohr models

Which of these had scientific evidence to back their models of the atom?

• Democritus

• John Dalton

• J.J. Thomson

• Ernest Rutherford

How did Rutherford describe the nucleus?

• Tiny
• Dense
• Positively Charged
• all of the above

Who came up with the model of an atom pictured?

• J.J. Thompson
• Ernest Rutherford
• Neils Bohr
• James Chadwick

How many valence electrons does carbon have?

• 4

• 5

• 6

• 7

What is the mass number of this atom?

• 1
• 3
• 4
• 7

What is the atomic number of this element?

• 17

• 18

• 35

• 35.453

What two particles are part of the nucleus of an atom?

• Protons and Electrons
• Electrons and Neutrons
• Protons and Neutrons
• Alpha and Beta

What is the mass of this atom?

• 9

• 10

• 19

• 28

What is the mass number of this atom of Chlorine?

• 17

• 18

• 35

• 35.453

Which atomic model is pictured here?

• Atomos

• Plum Pudding Model

• Nuclear Model

• Bohr Model