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Physical Change: 30

The change in which only the physical state of a substance is changed; no new substance is formed, is called a Physical Change.

Chemical Change: 30

The change in which a substance or substances are converted into new substance or substances possessing properties which are different from the original ones is called a Chemical Change.

Chemical Equation: 30

The change in which a substance or substances are converted into new substance or substances possessing properties which are different from the original ones is called a Chemical Equation.

Combination Reaction: 36

When two or more reactants combine in a reaction to form a single product, it is called a Combination Reaction.

Decomposition Reaction: 37

The chemical reaction in which two or more products are formed from a single reactant is called Decomposition Reaction.

Thermal Decomposition: 37

The reaction in which a compound is decomposed by heating it to a high temperature, is called Thermal Decomposition.

Electrolytic Decomposition: 37

The reaction in which a compound is decomposed by passing an electric current through its solution or molten mass, is called Electrolytic Decomposition.

Displacement Reaction: 38

The reaction in which the place of the ion of a less reactive element in a compound is taken by another more reactive element by formation of its own ions, is called Displacement Reaction.

Double Displacement Reaction: 38

The reaction in which the ions in the reactants are exchanged to form a precipitate is called Double Displacement Reaction.

Endothermic Reaction: 38

The reaction in which heat is absorbed is called an Endothermic Reaction.

Exothermic Reaction: 38

The reaction in which heat is given out is called an Exothermic Reaction.

Catalyst: 41

The substance in whose presence the rate of a chemical reaction changes, without causing any chemical change to it, is called a Catalyst.

Oxidation: 41

The chemical reaction in which, reactants gain oxygen or lose hydrogen is called oxidation.

Reduction: 41

The chemical reaction in which, reactants gain hydrogen or lose oxygen is called reduction.

Oxidant or Oxidizing Agent: 42

The chemical substance, which brings about an oxidation reaction by making oxygen available are called an Oxidant or Oxidizing Agent.

Reductant or Reducing Agent: 43

The chemical substance, which brings about reduction, by making hydrogen available, is called as a Reductant or Reducing Agent.

Redox Reaction: 43

The reaction which involves simultaneous oxidation and reduction is called an oxidation-reduction or Redox Reaction.

This page was last modified on
19 February 2021 at 23:33