Atomic Theory & Structure

Front

What is the value representing the number of protons in an element?

Back

Atomic Number

Front

Who proposed the Bohr model of the atom?

Back

Neils Bohr

Front

What is the measure of the nuclear particles: protons + neutrons?

Back

Atomic Mass

Front

Who is best known for the 'Plum Pudding' model of the atom?

Back

J.J. Thomson

Front

What is the tiny, dense, positively charged portion of the atom that holds most of the atomic mass?

Back

Nucleus

Front

What are the negatively charged particles that orbit the nucleus of an atom?

Back

Electrons

Front

What is the center of an atom called?

Back

Nucleus

Front

What is the term for the sum of protons and neutrons in an atom?

Back

Mass Number

Front

Who is known for the first modern atomic theory?

Back

John Dalton

Front

What are the particles in the nucleus of an atom?

Back

Protons and Neutrons