Atomic Theory

Front

What is the smallest unit of matter that retains the properties of an element?

Back

Atom

Front

What subatomic particle has a negative charge and is found outside of the nucleus?

Back

Electron

Front

Who proposed the atomic theory that describes atoms as solid spheres?

Back

John Dalton

Front

What is the positively charged particle found in the nucleus of an atom?

Back

Proton

Front

Who discovered the neutron, a particle with no charge?

Back

James Chadwick

Front

What model of the atom describes electrons in fixed orbits around the nucleus?

Back

Bohr Model

Front

What is the central part of an atom that contains protons and neutrons?

Back

Nucleus

Front

What is the charge of a neutron?

Back

Neutral (no charge)

Front

Who proposed the electron cloud model of an atom?

Back

Erwin Schrödinger

Front

What is the term for the number of protons in the nucleus of an atom?

Back

Atomic Number