Chapter 1: Atoms, Molecules, and Ions

Vocabulary flashcards covering atomic structure, light energy properties, ion charges, and chemical formulas based on Chapter 1.

Atomic Nucleus

The core structure of an atom composed of protons and neutrons, containing almost all of the atom's mass.

Atomic Number

The specific number of protons contained within an atom's nucleus.

Noble Gases

Chemically unreactive elements that have eight electrons in their outer shell.

Relationship Between Light Wavelength and Frequency

An inverse relationship where an increase in the wavelength of light results in a decrease in frequency.

Relationship Between Light Frequency and Energy

A direct relationship where an increase in the frequency of light results in an increase in energy.

Photon Emission

The release of energy as a photon when an excited electron falls back to its ground state.

Magnesium Ion

A magnesium atom that has lost two electrons, resulting in a charge of $2+$.

Bromide Ion

A bromine atom that has gained an electron, resulting in a charge of $-1$ (or $-$).

Potassium Iodide

An ionic salt with the chemical formula $KI$.

Lithium Sulfide

An ionic salt with the chemical formula $Li_2S$.

Aluminium Sulfide

An ionic salt with the chemical formula $Al_2S_3$.