Isotopes and Atomic Mass FLASHCARD

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

What do isotopes of an element have in common?

Back

Isotopes of an element have the same atomic number and therefore the same number of protons and electrons.

Front

What varies between isotopes of an element?

Back

The number of neutrons and the atomic mass vary between isotopes of an element.

Front

What is the mass number of an atom?

Back

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

Front

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

Back

Subtract the atomic number (number of protons) from the mass 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 is the relationship between atomic mass and isotopes?

Back

The atomic mass of an element is a weighted average of the masses of its isotopes.

Front

What is the symbol for mass number in isotope notation?

Back

In isotope notation, the mass number is represented by the letter 'A'.

Front

What is the symbol for atomic number in isotope notation?

Back

In isotope notation, the atomic number is represented by the letter 'Z'.

Front

How are isotopes represented in chemical notation?

Back

Isotopes are represented as 'Element-A' where 'A' is the mass number (e.g., Carbon-12 is written as C-12).