The minimum energy required for a reaction to occur.
Different structural modifications of an element
Atomic number (Z)
The number of protons in the nucleus of an atom.
Backward (or reverse) reaction
One that goes from right to left in an equation
Fuel produced from renewable plant material (biomass)
Bond dissociation enthalpy
The enthalpy change for the breaking of a covalent bond, with all species in the gaseous state
Apparatus used to measure heat change
A species which contains a carbon atom that has a positive charge
Applies to a process which occurs without a change in the total amount of carbon dioxide present in the atmosphere
A substance which alters the rate of a reaction without itself being consumed