atomic structure, ions, isotopes

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

Atoms of the same element which have a different number of neutrons are called _________________.

Back

Isotopes.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

A neutral atom always has the same number of protons and ______.

Back

Electrons.

Front

An atom with atomic number 6 would have how many protons?

Back

6 protons.

Front

What are ions?

Back

Ions are atoms or molecules that have a net electrical charge due to the loss or gain of one or more electrons.

Front

What is an isotope?

Back

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons.

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 the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of a neutron?

Back

A neutron has no charge (neutral).