Unit 1 - Atomic Theory - Honors Chemistry Final Exam Review

Front

What is the average atomic mass of an element?

Back

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

Front

What is an isotope?

Back

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

Front

What determines the identity of an element?

Back

The identity of an element is determined by the number of protons in its nucleus.

Front

What is the significance of percent abundance in isotopes?

Back

Percent abundance indicates how common each isotope of an element is in nature, affecting the average atomic mass.

Front

What is the Thomson model of the atom?

Back

The Thomson model, also known as the 'plum pudding model', describes the atom as a sphere of positive charge with negatively charged electrons embedded within it.

Front

How does the Bohr model describe electron arrangement?

Back

The Bohr model describes electrons as being in fixed orbits around the nucleus at specific energy levels.

Front

What are s, p, d, and f orbitals?

Back

s, p, d, and f orbitals are types of atomic orbitals that describe the probable locations of electrons in an atom.

Front

What is the current atomic model?

Back

The current atomic model is based on quantum mechanics and describes electrons in terms of probabilities and orbitals rather than fixed paths.

Front

What is the difference between an atom and an ion?

Back

An atom is neutral, having equal numbers of protons and electrons, while an ion has a different number of electrons, resulting in a net charge.

Front

What is the role of neutrons in an atom?

Back

Neutrons contribute to the mass of an atom and help stabilize the nucleus, but they do not affect the chemical properties.