Atom Structure

Front

What is the definition of atomic mass?

Back

Atomic mass is the weighted average mass of an atom's isotopes, measured in atomic mass units (amu).

Front

How do you calculate the number of neutrons in an atom?

Back

To find the number of neutrons, subtract the atomic number (number of protons) from the atomic mass.

Front

What does APE MAN stand for in atomic structure?

Back

APE MAN stands for: Atomic Number = Protons = Electrons; Atomic Mass - Atomic Number = Neutrons.

Front

Where are neutrons located in an atom and what is their charge?

Back

Neutrons are located inside the nucleus of an atom and have a neutral charge.

Front

What particles make up the nucleus of an atom?

Back

The nucleus of an atom is made up of protons and neutrons.

Front

What is the charge of protons?

Back

Protons have a positive charge.

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 also equals the number of electrons in a neutral atom.

Front

What is the significance of the atomic mass number?

Back

The atomic mass number indicates the total number of protons and neutrons in an atom's nucleus.

Front

How do isotopes of an element differ from each other?

Back

Isotopes of an element differ in the number of neutrons they contain, resulting in different atomic masses.

Front

What is the role of electrons in an atom?

Back

Electrons are negatively charged particles that orbit the nucleus and are involved in chemical bonding.