5 main points of combination reaction??????
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=》A combination reaction (also known as a synthesis reaction) is a reaction where two or more elements or compounds (reactants) combine to form a single compound (product).
=》Such reactions may be represented by equations of the following form: X + Y → XY.
=》There is no specific number of reactants in a combination reaction.
=》Combination reactions are usually exothermic because when the bond forms between the reactants, heat is released. For example, barium metal and fluorine gas will combine in a highly exothermic reaction to form the salt barium fluoride.
=》When a combination reaction occurs between a metal and a non-metal the product is an ionic solid. An example could be lithium reacting with sulphur to give lithium sulphide.
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