Fall ACP Review - Units 1 and 2 #1

Front

What are noble gases?

Back

Noble gases are a group of elements in Group 18 of the periodic table that are gaseous at room temperature and mostly unreactive (inert). Examples include Helium (He), Neon (Ne), and Argon (Ar).

Front

What is average atomic mass?

Back

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

Front

How do you calculate average atomic mass?

Back

To calculate average atomic mass, multiply the atomic mass of each isotope by its relative abundance (as a decimal), then sum these values.

Front

What is the electron configuration for an element?

Back

The electron configuration is the distribution of electrons among the orbitals of an atom. It indicates how electrons are arranged in an atom.

Front

What is the electron configuration for Arsenic (As)?

Back

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p³.

Front

What is the relationship between frequency and energy?

Back

The relationship is direct: if frequency increases, energy also increases.

Front

What are isotopes?

Back

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

Front

What is the significance of the periodic table groups/families?

Back

Elements in the same group/family of the periodic table have similar chemical properties due to having the same number of valence electrons.

Front

What is the atomic mass of an element?

Back

The atomic mass is the mass of an atom, typically expressed in atomic mass units (amu), which reflects the total number of protons and neutrons in the nucleus.

Front

What is the natural abundance of an isotope?

Back

Natural abundance refers to the relative amount of a particular isotope of an element found in nature, usually expressed as a percentage.