Isotopes and Ions

Front

What is an ion?

Back

An ion is an atom that has gained or lost electrons, resulting in a net charge.

Front

What defines a neutral or normal atom?

Back

A neutral or normal atom has the same number of protons and electrons, resulting in no overall charge.

Front

What is an isotope?

Back

An isotope is an atom of the same element that has the same number of protons but a different number of neutrons.

Front

What happens to an atom when it loses an electron?

Back

When an atom loses an electron, it becomes a positively charged ion (cation).

Front

What happens to an atom when it gains an electron?

Back

When an atom gains an electron, it becomes a negatively charged ion (anion).

Front

How do you determine the charge of an ion?

Back

The charge of an ion is determined by the difference between the number of protons and electrons.

Front

What is the charge of a lithium atom that loses 1 electron?

Back

+1

Front

If an atom has a charge of +3 and an atomic number of 5, how many electrons does it have?

Back

It has 2 electrons.

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

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.