Chemistry 111 Unit 2

amu

atomic mass unit

atomic number

number of protons

atom with unequal number of protons and electrons

ion

more positive (more protons than electrons)

cation

more negative (more electrons than protons)

anion

atoms with same atomic number but different masses (neutrons)

isotopes

weighted average of the atomic masses of all isotopes

atomic weight

Hydrogen, Nitrogen, Flourine, Oxygen, Iodine, Chlorine, Bromine

diatomic elements

electrons found in the outermost layer of the element

valence electrons

classification of krypton

discrete atom

classification of carbon

covalent network

classification of sodium

metallic lattice

classification of flourine

molecule

classification of potassium

metallic lattice

classification of lithium

metallic latice

classification of nitrogen

molecule

classification of phosphorus

molecule

classification of iodine

molecule

classification of sulfur

molecule

classification of helium

discrete atom

classification of calcium

metallic lattice

classification of hydrogen

molecule

classification of xenon

discrete atom

classification of neon

discrete atom

CH₃COO⁻

acetate

NO₃⁻

nitrate

SO₄²⁻

sulfate

CO₃²⁻

carbonate

OH⁻

hydroxide

NH₄⁺

ammonium

PO₄³

phosphate

ClO₃⁻

chlorate

CN⁻

cyanide

HCO₃⁻

bicarbonate