Atom & Isotope Review

Front

What is an isotope?

Back

An isotope is an atom that has the same number of protons but a different number of neutrons compared to other atoms of the same element.

Front

How does adding or subtracting neutrons affect an atom?

Back

Adding or subtracting neutrons changes the mass of the atom and creates an isotope of that element.

Front

What determines the identity of an atom?

Back

The identity of an atom is determined by the number of protons it has.

Front

If a Carbon isotope has 7 neutrons, what is its mass number?

Back

The mass number is 13 (6 protons + 7 neutrons).

Front

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

Back

Number of neutrons = Mass number - Atomic number.

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

What are ions?

Back

Ions are atoms that have gained or lost one or more electrons, resulting in a net charge.

Front

What is the difference between an element and an isotope?

Back

An element is defined by its atomic number, while an isotope is a variant of an element with a different number of neutrons.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

What is the significance of neutrons in an atom?

Back

Neutrons contribute to the mass of an atom and can affect its stability, but they do not affect the charge.