Atomic Theory

What two particles would you find in the nucleus of an atom?

• Protons and electrons

• Neutrons and electrons

• Protons and neutrons

• Electrons and negatrons

Tags

NGSS.MS-PS1-1

Which scientist developed the atomic theory?

• JJ Thomson
• Ernest Rutherford
• John Dalton
• James Chadwick

The Gold Foil experiment was done by __________.

• Chadwick
• Bohr
• Rutherford
• Thomson

He discovered neutrons.

• Rutherford
• Bohr
• Chadwick
• Dalton
• Thomson

Tags

NGSS.HS-PS1-8

Which scientist discovered the electrons?

• Dalton

• Thomson

• Atristotle

• Bohr

Who first came up with the idea of an atom and called them "atomos"?

• o Democritus

• o Thomson

• o Rutherford

• o Bohr

Who discovered that atoms have a nucleus?

• Dalton

• Thompson

• Rutherford

• Bohr

What scientist is best known for his "Plum Pudding" model of the atom?

• J.J. Tomson
• Ernest Rutherford
• John Dalton
• Democritus

What did James Chadwick discover?

• neutrons
• electrons
• the atomic theory
• protons

Tags

NGSS.HS-PS1-8

Rutherford and his students did experiments that showed

• Atoms contain negative particles, now called electrons.

• Atoms are mostly empty space.

• Neutrons are located in the nucleus.

• Matter cannot be lost or gained.