acid anhydride
oxide that forms an acid in water
alkali metal
element (except hydrogen) in group 1 of the periodic table
alkaline earth metal
element in group 2 of the periodic table
allotrope
one of the possible physical forms in which an element can exist
amorphous solid
solid composed of particles that are not organized into a crystalline pattern
base anhydride
oxide that forms a base in water
borate
ion with boron-oxygen bonds
carbonate
substance with the carbonate ion, CO32–
disproportionation reaction
reaction in which the element is both reduced and oxidized
Haber-Bosch process
process that breaks down the nitrogen-nitrogen bonds in N2 and converts nitrogen into ammonia (NH3)
halogen
element in group 17 of the periodic table
hydrogen carbonate
substance with the HCO3– ion
hydrogenation
reaction in which hydrogen is added to a compound
interhalogen
compound that consists of more than one halogen element, such as ClF or IF5
main group element
element in group 1, 2, or 13 to 18 of the periodic table
metal
one of a class of elements that tend to have a metallic luster, be good conductors of electricity and thermal energy, and be malleable and ductile
metalloid
one of a class of elements that tend to have properties of both metals and nonmetals
nitrogen fixation
process of breaking down N2 into more usable nitrogen compounds
noble gas
element in group 18 of the periodic table
nonmetal
one of a class of elements that tend to not have metallic luster, be poor conductors of electricity and thermal energy, and be neither malleable nor ductile
passivation
process of making a material less reactive by coating it or letting the top layer react often with oxygen in the air
peroxide
compound that has an oxygen-oxygen bond in which the oxidation state of oxygen is –1
polymorph
solid material with more than one possible structure
silicate
mineral that contains both silicon and oxygen
transition metal
element in group 3 through 12 of the periodic table