Atomic Theory Quiz

Who proposed the theory that everything in the world was made of tiny indestructible particles called 'atomos'?

• Democritus

• Aristotle

• John Dalton

• J.J. Thompson

Which Greek philosopher believed that everything on this planet was made of four elements: earth, fire, water, and air?

• Democritus

• Aristotle

• John Dalton

• J.J. Thompson

Who conducted experiments with gases and observed their behavior, leading to the law of multiple proportions and the theory of atomism?

• Democritus

• Aristotle

• John Dalton

• J.J. Thompson

Which physicist proposed the 'plum pudding' model of the atom?

• Democritus

• Aristotle

• John Dalton

• J.J. Thompson

Who discovered alpha, beta, and gamma rays during his work on radioactive decay?

• Democritus

• Aristotle

• John Dalton

• Ernest Rutherford

Tags

NGSS.HS-PS1-8

Who discovered alpha, beta, and gamma rays?

• Erwin Schrödinger

• Niels Bohr

• Rutherford

• Heisenberg

Tags

NGSS.HS-PS1-8

What was the purpose of Rutherford's gold-foil experiment?

• To detect alpha particles

• To study the structure of an atom

• To observe the behavior of electrons

• To measure the energy levels of electrons

According to Rutherford's atomic model, where is most of the atom's mass concentrated?

• In the electrons

• In the nucleus

• In the shells

• In the orbitals

Tags

NGSS.HS-PS1-8

What did Niels Bohr propose to explain the stability of atoms?

• Electrons move in fixed orbits

• Electrons exist in wave-particle duality

• Electrons revolve around the nucleus in circular orbits

• Electrons can exist in any position within an atom

According to the quantum mechanical model, where is the probability of finding an electron the highest?

• In the nucleus

• In the shells

• In the orbitals

• In the electron clouds