1 combination reaction.
2. displacement reaction.
3.decomposition reaction.
4.displacement reaction.
A type of chemical energy.
Chemical. Any type of combustion is a chemical change.
A chemical substance is a chaste (pure) for of matter that has a constant chemical composition. A chemical in general is some type of chemical compound, like some type of molecule.
a fire with a chemical in it
chemical combination
Type of bonding between elements in a compound chemical-chemically is chemical bonding.
Chemical engineering
Food energy, which is a type of chemical energy (we can't process just any chemical energy, only certain substances).
Protein is not a type of energy, it is a type of chemical.
coal have chemical energy
Prion
A salt is a type of chemical compound, not a reaction.