Question

write 3 exampled of combination reaction​

Answer 1

Answer:

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Answer 2

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:

Ba + F2 → BaF2

Another example is magnesium oxide combining with carbon dioxide to produce magnesium carbonate.

MgO + CO2 → MgCO3

Another example is iron combining with sulphur to produce iron(II) sulfide.

Fe + S → FeS

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. When magnesium burns in air, the atoms of the metal combine with the gas oxygen to produce magnesium oxide. This specific combination reaction produces the bright flame generated by flares.

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