All That Matters
These are the three main states of matter.
Solid, liquid, gas
These two subatomic particles make up the dense nucleus of an atom.
Proton and Neutron
The correct chemical formula for sodium chloride, common table salt.
NaCl
This type of chemical bond is formed when two nonmetal atoms share a pair of electrons.
Covalent bond
This acronym stands for the theory that predicts molecular shapes based on the repulsion between electron domains.
VSEPR (Valence Shell Electron Repulsion)
This state describes a solute completely dissolved in a solvent, specifically water.
Aqueous
Carbon-12 and Carbon-14 are examples of these - atoms of the same element that have different numbers of neutrons.
Isotopes
The name for the polyatomic ion SO42-, which forms an acid when combined with two hydrogen ions.
Sulfate
This rule states that atoms of main-group elements tend to form bonds in ways that give them eight valence electrons.
Octet rule
This is the molecular geometry of methane (CH4), which features bond angles of 109.5 degrees.
Tetrahedral
This word describes a pure substance consisting of only one type of atom.
Element
This specific type of ion possesses a positive charge because it has lost one or more electrons.
Cation
The chemical formula for iron(III) oxide, commonly known as rust.
Fe2O3
This property is a measure of an atom's ability to attract shared electrons to itself; Fluorine possesses the highest value.
Electronegativity
Water (H2O) has a tetrahedral electronic structure, but takes this molecular structure due to its two lone pairs.
Bent
This physical property is defined as the ratio of an object's mass to its volume.
Density
This integer, represented by the letter A, is equal to the number of protons and neutrons in an atom's nucleus.
Mass Number
This is the name of the acid with the formula CH3COOH.
Acetic acid
This calculated accounting value helps determine the most stable Lewis structure; it equals valence electrons minus nonbonding electrons minus half the bonding electrons.
Formal Charge
A molecule with 3 bonding pairs and 1 lone pair on the central atom, like ammonia (NH3), will exhibit this molecular geometry.
Trigonal pyramidal
The name of this symbolic triangle describes the Macroscopic, Sub-microscopic and Representative realms of chemistry.
Johnstone's Triangle
This fundamental particle is the building block of protons and neutrons.
Quark
The systematic name for the covalent molecule P2O5.
Diphosphorus pentoxide
The bonding in metals is referred to as this, due to the delocalized nature of electrons which are able to "flow" throughout the material.
Sea of Electrons
A molecule with 5 electron domains around the central atom, all of them bonding pairs, adopts this geometry.
Trigonal bipyramidal