Atoms, Ions, and Isotopes

Front

What is the atomic number?

Back

The atomic number is equal to the number of protons in an atom.

Front

What particles determine the mass number?

Back

The mass number is determined by the total number of protons and neutrons in an atom.

Front

What is the atomic number of Iron (Fe)?

Back

The atomic number of Iron (Fe) is 26.

Front

How many neutrons does Boron (B) contain?

Back

Boron (B) contains 6 neutrons.

Front

What is the mass number of Bromine?

Back

The mass number of Bromine is 80.

Front

Define an atom.

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

What is an ion?

Back

An ion is an atom or molecule that has 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

How do you calculate the mass number?

Back

Mass number = Number of protons + Number of neutrons.

Front

What is the charge of a proton?

Back

A proton has a positive charge.