Isotopes Review

Front

What is an isotope?

Back

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

Front

How do you denote an isotope?

Back

An isotope is denoted by the element's name followed by its mass number, e.g., Carbon-12.

Front

What is the mass number of an isotope?

Back

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

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

How many protons does Chlorine-35 have?

Back

Chlorine-35 has 17 protons.

Front

What is the relationship between isotopes and neutrons?

Back

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

Front

What is a common use of isotopes in medicine?

Back

Isotopes are used in medical imaging and cancer treatment, such as radioactive iodine in thyroid treatment.

Front

What is the difference between stable and unstable isotopes?

Back

Stable isotopes do not undergo radioactive decay, while unstable isotopes do and can emit radiation.

Front

How many electrons are in a neutral atom of an isotope?

Back

In a neutral atom, the number of electrons equals the number of protons.

Front

What is an example of an isotope used in dating fossils?

Back

Carbon-14 is an isotope used in radiocarbon dating to determine the age of fossils.