Terms

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Reactant

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A reactant is a substance that takes part in and undergoes change during a reaction.

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Product

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A product is a substance that is formed as the result of a chemical reaction.

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Catalyst

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A catalyst is a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.

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Inhibitor

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A inhibitor is a substance that slows down or prevents a particular chemical reaction or other process, or that reduces the activity of a particular reactant, catalyst, or enzyme.

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Rate of Reaction

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Reaction rate is the speed at which a chemical reaction proceeds. It is often expressed in terms of either the concentration of a product that is formed in a unit of time or the concentration of a reactant that is consumed in a unit of time.

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Conservation of Mass

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Conservation of Mass is a principle stating that mass cannot be created or destroyed.

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Decomposition Reaction

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Chemical decomposition is a analysis or breakdown is the separation of a chemical compound into elements or simpler compounds.

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Synthesis Reaction

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A synthesis reaction or direct combination reaction is a type of chemical reaction in which two or more simple substances combine to form a more complex product. The reactants may be elements or compounds. The product is always a compound.

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Precipitation Reaction

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A precipitation reaction is an insoluble solid that emerges from a liquid solution. The emergence of the insoluble solid from solution is called precipitation.

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Single-displacement Reaction

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A single replacement reaction is also known as a substitution reaction, is a type of chemical reaction where one element replaces another element in a compound.

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Double-displacement Reaction

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A double displacement reaction, also known as a double replacement reaction or metathesis, is a type of chemical reaction where two compounds react, and the positive ions and the negative ions of the two reactants switch places, forming two new compounds or products.

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Chemical Reaction

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Chemical Reaction is a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.

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Chemical Equation

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A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side.

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Endothermic Reaction

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A endothermic process describes a process or reaction in which the system absorbs energy from its surroundings; usually, but not always, in the form of heat. ... The opposite of an endothermic process is an exothermic process, one that releases, "gives out" energy in the form of heat.

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Exothermic Reaction

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An exothermic reaction is a chemical reaction that releases energy by light or heat. It is the opposite of an endothermic reaction. Expressed in a chemical equation: reactants → products + energy.