IPC Unit 2-1: History of the Atom and Periodic Table Test

Which scientist proposed the plum pudding model of the atom?

• John Dalton
• J.J. Thomson
• Ernest Rutherford
• Niels Bohr

What was the major contribution of John Dalton to atomic theory?

• He discovered the electron
• He proposed that atoms are indivisible particles
• He discovered the nucleus
• He proposed the planetary model of the atom

Which experiment led to the discovery of the nucleus?

• Cathode ray experiment
• Oil drop experiment
• Gold foil experiment
• Spectral lines experiment

Tags

NGSS.HS-PS1-8

What is the main difference between Rutherford's and Bohr's atomic models?

• The presence of neutrons
• The concept of electron shells
• The discovery of protons
• The idea of a nuclear atom

Who is credited with organizing the periodic table?

• Dmitri Mendeleev
• Henry Moseley
• Antoine Lavoisier
• Linus Pauling

What does a period in the periodic table represent?

• A family of elements with similar properties
• Elements with the same number of valence electrons
• Elements with the same number of electron shells
• A horizontal row of elements

Which of the following is NOT a characteristic of metals?

• High electrical conductivity
• Malleability
• Low melting points
• Ductility

Where are the most reactive non-metals located on the periodic table?

• Top left
• Bottom left
• Top right
• Bottom right

What is the trend for atomic radius as you move from left to right across a period?

• Increases
• Decreases
• Remains constant
• Fluctuates randomly

Which subatomic particle has a negative charge?

• Proton
• Neutron
• Electron
• Positron