Reactant
Oxygen Gas
O2
CH4
Methane
Ethene
C2H4
C2H2
Ethyne
Product
reactants are transformed into products after passing through a high energy transition state
Products are the species formed from chemical reactions.
Carbon Dioxide
CO2
C2H6
Ethane
Propene
C3H6
C3H4
Propyne
Coefficient
In Chemistry the coefficient is the number in front of the formula.
Carbon Monoxide
CO
C3H8
Propane
C4H8
C4H6
Butyne
Lewis Structure
diagrams that represent the valence electrons of atoms within a molecule.
Water
H2O
C4H10
Butane
Pentene
C5H10
C5H8
Pentyne
Exothermic
exothermic reaction is a "reaction for which the overall standard enthalpy change ΔH⚬ is negative." Exothermic reactions usually release heat.
What is chemistry
Your mom
C5H12
Pentane
Hexene
C6H12
C6H10
Hexyne