Atoms, Isotopes, Ions

Front

What is an atom?

Back

The smallest unit of an element, consisting of protons, neutrons, and electrons.

Front

What is an isotope?

Back

Atoms of the same element that have different mass due to a different number of neutrons.

Front

What is an ion?

Back

An atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom, which determines the element.

Front

What is a cation?

Back

A positively charged ion, formed by the loss of one or more electrons.

Front

What is an anion?

Back

A negatively charged ion, formed by the gain of one or more electrons.

Front

How do you determine the number of neutrons in an isotope?

Back

Subtract the atomic number from the mass number.

Front

What does the mass number represent?

Back

The total number of protons and neutrons in an atom's nucleus.

Front

What happens to the number of electrons in an ion?

Back

The number of electrons changes, resulting in a net charge.

Front

What is the difference between Li-6 and Li-7?

Back

Li-6 has 3 neutrons, while Li-7 has 4 neutrons.