Unit 1 - Atomic Theory - Chemistry Final Exam Review

Front

What is the most abundant isotope of Boron?

Back

Boron-11

Front

Why is the resulting atom a new element when two atoms undergo fusion?

Back

The new element has a different number of protons.

Front

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

Back

Calculate the weighted average based on the abundance and mass of each isotope.

Front

Which isotope of Silicon has the greatest abundance if its average atomic mass is 28.1 amu?

Back

Silicon-28

Front

What is the average atomic mass of element X if given options are 28.08 amu, 32.43 amu, 29.00 amu, and 23.52 amu?

Back

28.08 amu

Front

Define isotope.

Back

Isotopes are variants of a chemical element that have the same number of protons but different numbers of neutrons.

Front

What is atomic mass unit (amu)?

Back

Atomic mass unit (amu) is a standard unit of mass that quantifies mass on an atomic or molecular scale.

Front

Explain the significance of protons in determining the identity of an element.

Back

The number of protons in an atom's nucleus defines the element and its position on the periodic table.

Front

What is the relationship between the number of protons and neutrons in an isotope?

Back

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

Front

How does the average atomic mass relate to the isotopes of an element?

Back

The average atomic mass is a weighted average of the masses of all isotopes, considering their relative abundances.