Average Atomic Mass with Isotopes

Front

What is average atomic mass?

Back

The weighted average of the masses of an element's isotopes, taking into account their relative abundances.

Front

How do you calculate the average atomic mass of an element with multiple isotopes?

Back

Multiply the mass of each isotope by its relative abundance (as a decimal), then sum these values.

Front

What is an isotope?

Back

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

Tags

NGSS.HS-PS1-8

Front

What is the significance of neutrons in isotopes?

Back

Neutrons contribute to the mass of an atom and can affect the stability of the nucleus.

Tags

NGSS.HS-PS1-8

Front

If an element has an atomic number of 6, what element is it?

Back

Carbon.

Front

What is the average atomic mass of silver?

Back

107.8677 amu.

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 mass number of an isotope?

Back

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

Front

What is the relationship between protons and electrons in a neutral atom?

Back

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

Front

What is the average atomic mass of an isotope with 30% of 4 amu, 20% of 5 amu, and 50% of 3 amu?

Back

Approximately 4 amu.