Atomic Theory

Front

What is the central region of an atom where its neutrons and protons are located?

Back

Nucleus

Front

What subatomic particle determines the identity of an atom and has a positive charge?

Back

Protons

Front

True or False: The elements in the periodic table are arranged by increasing atomic number.

Back

True

Front

What are the subatomic particles that have a negative charge?

Back

Electrons

Front

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

Back

Electron

Front

What is the charge of neutrons?

Back

Neutral (no charge)

Front

What is the charge of protons?

Back

Positive charge

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.

Front

What are isotopes?

Back

Atoms of the same element that have different numbers of neutrons.