Elements and the Periodic Table Review

Who was the first contributor to the atomic theory?

• John Dalton

• Ernest Rutherford

• JJ Thompson

• Democritus

• Neils Bohr

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

What were Ernest Rutherford's three contributions to atomic theory?

• Discovered that the atom is mostly empty space

• Discovered the nucleus- did the gold foil experiment

• Used the cathode ray tube in his discovery

• Discovered the electron

• Discovered that the proton had a positive charge

Who proposed the solid sphere model for the atom?

• James Chadwick
• Rutherford
• John Dalton
• Bohr

Which scientist discovered the electron, which helped him develop a model of the atom?

• Niels Bohr
• John Dalton
• Ernst Rutherford
• J.J Thompson

What did James Chadwick discover?

• neutrons
• electrons
• the atomic theory
• protons

Tags

NGSS.HS-PS1-8

Who discovered the proton in the nucleus?

• Dalton
• Chadwick
• Rutherford
• Thompson

Which scientist developed the plum pudding/chocolate chip cookie model

• Dalton
• Thompson 
• Rutherford
• Democritus

How many neutrons in C-14?

• 6
• 7
• 14
• 8

Tags

NGSS.HS-PS1-8

How many protons does an Aluminum atom have? (use the picture to help you)

• 27
• 13
• 14
• 40

Tags

NGSS.MS-PS1-1