reaction
The substance that reacts chemically with another to produce heat is called a "reactant."
This is called reactivity.
When one liquid reacts with another it is called a precipitate.
the way a substance reacts with other substances is called
Compound
This is called a mixture.
compound
a catalyst
The ability to combine chemically through the formation of chemical bonds with another substance is a chemical property.
A substance made of two or more elements that have been chemically combined is called a compound. In a compound, the elements are chemically bonded together in fixed ratios to form a new substance with unique properties different from the individual elements.
That is called a mixture.
These substances are called catalysts.