Flashcard History of the Atom

Front

What did Rutherford's gold-foil experiment conclude about the structure of the atom?

Back

Most of the atom is empty space.

Front

Who proposed the planetary model of the atom with electrons moving in specific layers?

Back

Niels Bohr.

Front

In which atomic model are atoms imagined as tiny solid spheres?

Back

John Dalton's atomic model.

Front

Who is known for the philosophical view that matter is continuous and not made of atoms, leading to the 'Death of Chemistry'?

Back

Aristotle.

Front

What significant discovery did Rutherford make in his gold-foil experiment?

Back

The nucleus of the atom.

Front

What is the main idea of Dalton's atomic theory?

Back

All matter is made of indivisible atoms.

Front

What did Bohr's model introduce that was different from previous atomic models?

Back

Electrons exist in fixed orbits around the nucleus.

Front

What was the primary limitation of Rutherford's model of the atom?

Back

It could not explain the stability of electron orbits.

Front

What did the discovery of the electron by J.J. Thomson contribute to atomic theory?

Back

It showed that atoms are not indivisible and contain smaller particles.

Front

What is the significance of the nucleus in the atomic model?

Back

It contains most of the atom's mass and is positively charged.