Atomic Structure, Isotopes, & Atomic Mass

Front

What is the mass number of an atom?

Back

The mass number is the total number of protons and neutrons in the nucleus of an atom.

Front

What is an isotope?

Back

An isotope is two atoms of the same element that have different numbers of neutrons.

Front

What is the nucleus of an atom?

Back

The nucleus is the central region of an atom where protons and neutrons are found.

Front

What charge do neutrons have?

Back

Neutrons have no charge.

Front

What are protons?

Back

Protons are positively charged particles found in the nucleus of an atom.

Front

What are electrons?

Back

Electrons are negatively charged particles that orbit the nucleus of an atom.

Front

How do you calculate atomic mass?

Back

Atomic mass is calculated by adding the number of protons and neutrons in an atom.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the difference between atomic mass and mass number?

Back

Atomic mass is the weighted average mass of an element's isotopes, while mass number is the total number of protons and neutrons in a specific isotope.

Front

What is a charged atom called?

Back

A charged atom is called an ion.