When a reaction takes place at an equal rate in both directions. (:
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When a chemical reaction reach the equilibrium she can not continue spontaneously.
The equilibrium position.
A catalyst decreases the threshold energy for a chemical reaction. A catalyst decreases energy required for two particles to react. A catalyst lowers the amount of energy needed to reach the transition state.
A chemical reaction
The chemical or chemicals formed in a chemical reaction are called the product of the chemical reaction.
Its a chemical reaction.
Bleach is a chemical. The process of bleaching something is a chemical reaction.
Chemical reaction
A chemical change is a chemical reaction.
I think the answer you're looking for is a "Chemical Reaction". For instance, combining Hydrochloric Acid (HCl) and Sodium Hydroxide (NaOH) will cause a Chemical Reaction resulting in salt water (NaCl + H20).
Combustion is a chemical reaction.