ICSE Class 9 Chemistry
Question 14 of 18
Chemical Changes & Reactions — Question 4
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Question Question 4.1
Differentiate between the following :
Synthesis reaction & a substitution reaction.
| Synthesis Reaction | Substitution Reaction |
|---|---|
| A chemical reaction in which two or more elements or compounds react to form one new compound is called a Direct Combination Reaction or Synthesis Reaction. | A chemical reaction in which an element or radical has replaced another element in a compound is called Displacement or Substitution Reaction. |
| For example: hydrogen + oxygen ⟶ water 2H2 [g] + O2 [g] ⟶ 2H2O [l] | For example: Magnesium + Copper [II] sulphate ⟶ Magnesium sulphate + Copper Mg + CuSO4 ⟶ MgSO4 + Cu |