Atomic Theory Scientists

Front

What is the nucleus of an atom?

Back

The nucleus is the dense, positively charged center of an atom, containing protons and neutrons.

Front

Who developed the electron cloud theory?

Back

The electron cloud theory was developed by Erwin Schrödinger.

Front

What particle did J.J. Thomson discover?

Back

J.J. Thomson discovered the electron.

Front

What model of the atom is represented by the Plum Pudding model?

Back

The Plum Pudding model represents the atom as a sphere of positive charge with negatively charged electrons embedded within it.

Front

Who discovered the proton?

Back

The proton was discovered by Ernest Rutherford.

Front

What is an electron?

Back

An electron is a negatively charged subatomic particle that orbits the nucleus of an atom.

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of a neutron?

Back

A neutron has no charge; it is neutral.

Front

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

Back

Dalton's atomic theory states that all matter is made up of atoms, which are indivisible and indestructible.

Front

What did Rutherford's gold foil experiment demonstrate?

Back

Rutherford's gold foil experiment demonstrated that atoms have a small, dense nucleus that is positively charged.