Question

list and explain all the types ofchemical combination with one example each
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Answer 1

Combination reaction: Two or more compounds combine to form one compound. A + B → AB . eg 2Na + Cl2 → 2NaCl

Decomposition reaction: The opposite of a combination reaction – a complex molecule breaks down to make simpler ones. AB → A + B eg Zn + CuSO4 → ZnSO4 + Cu

Precipitation reaction: Two solutions of soluble salts are mixed resulting in an insoluble solid (precipitate) forming. A + Soluble salt B → Precipitate + soluble salt C eg NaCl(aq) + AgNO3(aq) → AgCl(s) + NaNO3(aq)

Neutralization reaction: An acid and a base react with each other. Generally, the product of this reaction is a salt and water. Acid + Base → Salt + Water eg HCl + NaOH → NaCl + H2O

Combustion reaction: Oxygen combines with a compound to form carbon dioxide and water. These reactions are exothermic, meaning they give off heat. A + O2 → H2O + CO2 e

Displacement reaction: One element takes place with another element in the compound. A + BC → AC + B eg Zn + CuSO4 → ZnSO4 + Cu