Front

What are isotopes?

Back

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

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

What is the charge of a neutron?

Back

A neutron has no charge.

Front

How do you determine the atomic number of an element?

Back

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

Front

What happens when a proton is added to an atom?

Back

The atom becomes a different element.

Front

What happens when a neutron is added to an atom?

Back

The atom becomes a different isotope of the same element.

Front

What is the symbol for a Bromine ion that gains one electron?

Back

Br^-1.

Front

What is the mass number of an atom?

Back

The mass number is the total number of protons and neutrons in the nucleus.

Front

How many protons are in the isotope of Copper-63?

Back

There are 29 protons in Copper-63.