Ch. 4 Atoms and Isotopes

Front

What does Z represent in standard nuclear notation?

Back

Z represents the number of protons in an atom.

Front

What is the same for atoms of different isotopes of an element?

Back

The number of protons remains the same for all isotopes of an element.

Front

How many protons are in the nucleus of strontium-88?

Back

There are 38 protons in the nucleus of strontium-88.

Front

What does A represent in standard nuclear notation?

Back

A represents the mass number, which is the total number of protons and neutrons in the nucleus.

Front

What is an ion?

Back

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

Front

What is the mass number of an atom?

Back

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

Front

What is the difference between isotopes of the same element?

Back

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

Front

What is a neutron?

Back

A neutron is a subatomic particle found in the nucleus of an atom, with no electric charge.

Front

What is a proton?

Back

A proton is a positively charged subatomic particle found in the nucleus of an atom.

Front

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

Back

The number of neutrons can be determined by subtracting the number of protons (Z) from the mass number (A).