Atomic Theory

Front

First person to propose the concept of an atom

Back

Democritus

Front

Who proposed the theory that atoms orbit the nucleus in specific orbits?

Back

Bohr

Front

These particles are found in the nucleus

Back

Protons and neutrons

Front

Rutherford experimented with ____

Back

Gold foil and alpha particles

Front

Thomson experimented with ______

Back

Cathode rays

Front

What is an atom?

Back

The smallest unit of matter that retains the properties of an element.

Front

What are protons?

Back

Positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutral particles found in the nucleus of an atom.

Front

What are electrons?

Back

Negatively charged particles that orbit the nucleus of an atom.

Front

What is the nucleus?

Back

The central part of an atom, containing protons and neutrons.