"rapid oxidation"
Combustion
combustion or ignition
Matter
Burning would probably do nicely Burn
matter is something that has mass and takes up space
something about matter color and mass
It means your efforts are pointless because they ultimately will not matter.
Organic matter convertible into heat, directly by burning or indirectly by biogastification
combustion
Combustion
"Las materias" translates to "subjects" in English.
Pacadirm
He discovered that oxygen is present in the burning of matter.
Oxidation.
combusting
combustion or ignition
Oxygen is the oxydant in the reaction of burning.