Chapter 5: Ions & Ionic Compounds - Chemistry

octet rule

a concept of chemical bonding theory that is based on the assumption that atoms tend to have either empty valence shells or full valence shells of 8 electrons

ion

an atom, radical, or molecule, that has gained or lost one or more electrons and has a negative or positive charge

cation

an ion that has a positive charge

anion

an ion that has a negative charge

salt

an ionic compound that forms when a metal atom or a positive radical replaces the hydrogen of an acid

lattice energy

the energy released when ionic bonds are formed/when crystalline structure is formed

crystal lattice

the regular pattern in which a crystal is arranged

unit cell

the smallest portion of a crystal lattice that shows the 3D pattern of the entire lattice

polyatomic ion

an ion made of two or more atoms

true

True or false: Ionic compounds are made with a metal and a nonmetal

false

True or false: Ionic compounds can conduct electricity as a solid

true

True or false: ionic compounds have a high boiling/melting point

electron affinity

the energy required to add an electron to a neutral atom

formula unit

one part of an ionic bond

CsBr

What is the chemical formula for cesium bromide?

CoBr2

What is the chemical formula for cobalt(II) bromide?

AlI3

What is the chemical formula for aluminum iodide?

Copper(I) ion

Name the following: Cu+

Phosphide ion

Name the following: P3-

Iron(III) oxide

Name this compound: Fe2O3

Sodium Iodide

Name the compound: NaI

Chromium(III) Chloride

Name the compound: CrCl3

Magnesium Nitride

Name the compound: Mg3N2

Sodium Sulfate

Name the compound: Na2SO4

KMnO4

write the chemical formula for Potassium Permanganate

Al(OH)3

write the chemical formula for Aluminum Hydroxide