History of the Atom

Which scientist discovered the electrons?

• Dalton

• Thomson

• Atristotle

• Bohr

Rutherford and his students did experiments that showed

• quark

• nucleus

• proton

• electron

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NGSS.MS-PS1-1

In the modern periodic table elements are arranged by:

• atomic mass
• atomic number
• valence electrons
• number of isotopes

Who was the first person to come up with the Atomic Theory?

• John Dalton
• Democritus
• Ernest Rutherford
• Niels Bohr

Who developed the Quantum Mechanical Model?

• Erwin Schrodinger
• Joseph Thomson
• James Chadwick
• Ernest Rutherford

Who discovered that the nucleus contains positively charged particles called protons?

• Ernest Rutherford
• James Chadwick
• Democritus
• Niels Bohr

Who discovered the electron?

• Niels Bohr
• Democritus
• Joseph Thomson
• John Dalton

Which model is this?

• Thomson Model
• Cloud Model
• Bohr Model
• Rutherford Model

Tags

NGSS.MS-PS1-1

Which model is this?

• Thomson Model
• Rutherford Model
• Cloud Model
• Bohr Model

Tags

NGSS.MS-PS1-1

Which scientist saw the atom as a solid sphere?

• Dalton
• Thomson
• Rutherford
• Bohr

Tags

NGSS.MS-PS1-1