Quiz on Atomic Structure and History

What is the basic building block of matter?

• Proton

• Electron

• Molecule

• Atom

Who first developed the idea of an atom around 460 BC?

• John Dalton

• Democritus

• Ernest Rutherford

• JJ Thomson

What did John Dalton propose about atoms in 1805?

• Atoms are made of electrons and protons

• Atoms cannot be created, subdivided, or destroyed

• Atoms orbit the nucleus in shells

• Atoms are made of negatively charged particles

Tags

NGSS.HS-PS1-7

What is the name of the atomic model proposed by JJ Thomson?

• Rutherford Model

• Dalton Model

• Plum Pudding Model

• Bohr Model

What is the positively charged central region of an atom called?

• Proton Shell

• Electron Cloud

• Nucleus

• Atomic Core

According to the Rutherford-Bohr model, where do electrons orbit?

• Inside the nucleus

• Around the nucleus in specific circular orbits

• In random paths around the atom

• In the center of the atom

What is the approximate width of an atom?

• 1 millionth of a meter

• 1 billionth of a meter

• 1 ten-billionth of a meter

• 1 trillionth of a meter

What is the mass of one atomic mass unit in kilograms?

• 1.00 x 10^-27 kg

• 1.66 x 10^-27 kg

• 1.00 x 10^-12 kg

• 1.66 x 10^-12 kg

Which subatomic particle has a positive charge?

• Electron

• Photon

• Neutron

• Proton

What force holds protons and neutrons together in the nucleus?

• Gravitational force

• Nuclear force

• Atomic force

• Electromagnetic force

Tags

NGSS.HS-PS1-8