Atomic Models + Isotopes TEST

What is the smallest particle of an element that retains its identity in a chemical reaction?

• Molecule

• Atom

• Electron

• Proton

Tags

NGSS.HS-PS1-7

Which scientist is known for the discovery of the electron?

• Democritus

• J.J. Thomson

• Dalton

• Ernest Rutherford

Who proposed the atomic theory that all matter is composed of atoms?

• Dalton

• Max Knoll

• Robert A. Milikan

• James Chadwick

Which scientist is associated with the gold foil experiment?

• Ernst Ruska

• Ernest Rutherford

• Eugen Goldstein

• Democritus

Who is credited with the discovery of the neutron?

• James Chadwick

• Robert A. Milikan

• Max Knoll

• Dalton

Who was among the first to suggest the existence of atoms?

• Aristotle

• Democritus

• Plato

• Socrates

What did Democritus believe about atoms?

• Atoms are divisible and destructible

• Atoms are indivisible and indestructible

• Atoms are visible and changeable

• Atoms are large and complex

Why did Democritus's atomic theory lack experimental support?

• It was based on the scientific method

• It explained chemical behavior

• It was not based on the scientific method

• It was widely accepted by scientists

How did John Dalton transform Democritus's ideas on atoms?

• By using philosophical arguments

• By using experimental methods

• By using mathematical equations

• By using historical analysis

What did John Dalton study to develop his atomic theory?

• The speed of light

• The behavior of gases

• The ratios in which elements combine in chemical reactions

• The structure of the solar system