Atoms, Ions, Isotopes

Front

What are isotopes?

Back

Isotopes are atoms of the same element that have the same number of protons but different numbers of neutrons.

Front

Which of the following are isotopes? a) 14_7X b) 14_6X c) 15_7X d) 15_8X

Back

a) and c) are isotopes.

Front

What are ions?

Back

Ions are atoms that have a positive or negative charge due to the loss or gain of electrons.

Front

What is the charge of a cation?

Back

A cation is a positively charged ion.

Front

What is the charge of an anion?

Back

An anion is a negatively charged ion.

Front

How many electrons does Fe^3+ have?

Back

Iron (Fe) has 23 electrons when it has a 3+ charge.

Front

How many electrons does Cu^2+ have?

Back

Copper (Cu) has 27 electrons when it has a 2+ charge.

Front

What particles in an atom are neutral?

Back

Neutrons are the particles in an atom that are neutral and have no 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.

Front

What is the mass number of an atom?

Back

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