Atomic Theory Learning Check

Front

Who discovered the electron?

Back

Thomson

Front

What did Rutherford discover in his experiment?

Back

Nucleus

Front

Who proposed a model with electrons moving in specific layers around the nucleus?

Back

Bohr

Front

What is Oxygen's atomic number?

Back

8

Front

How many protons does Carbon have?

Back

6

Front

What is the atomic theory?

Back

A scientific theory that matter is composed of discrete units called atoms.

Front

What is an atom?

Back

The smallest unit of a chemical element, consisting of a nucleus surrounded by electrons.

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.