Flashcard Isotopes - Mrs. Chacon

Front

What is an isotope?

Back

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons, resulting in different mass numbers.

Front

What is the mass number of an atom?

Back

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

Front

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

Back

To find the number of neutrons, 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

How is isotope notation written?

Back

Isotope notation is written as A/Z Element, where A is the mass number and Z is the atomic number.

Front

What is the mass number of carbon-12?

Back

12

Front

What do isotopes of the same element have in common?

Back

Isotopes of the same element have the same atomic number.

Front

What is the mass number of Boron-11?

Back

11

Front

How many protons does Carbon-13 have?

Back

6 protons.

Front

What is the difference between atomic weight and mass number?

Back

Atomic weight is the weighted average of an element's isotopes, while mass number is the total number of protons and neutrons in a specific isotope.