Atomic Theory

Front

What is the basic unit of matter?

Back

Atom

Front

Who proposed the 'plum pudding' model of the atom?

Back

J.J. Thomson

Front

What subatomic particle has a negative charge?

Back

Electron

Front

What is the nucleus of an atom?

Back

The central part of an atom that contains protons and neutrons.

Front

Who is known for the planetary model of the atom?

Back

Niels Bohr

Front

What experiment did Ernest Rutherford conduct to study the structure of the atom?

Back

Gold foil experiment.

Front

What conclusion did Rutherford draw from his gold foil experiment?

Back

The nucleus is very small and the atom is mostly empty space.

Front

What are protons?

Back

Positively charged subatomic particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutral subatomic particles found in the nucleus of an atom.

Front

What is the charge of an electron?

Back

Negative.