Question
What is combination reaction ? Explain it with examples.
✓
Answer
→During a chemical reaction atoms of one element don't change in to another element.
→ Chemical reactions involve the breaking and making of bonds between atoms to produce new substances.
•Combination reaction
"A reaction in which a single product is formed from two or more reactants is known as a combination reaction."
Example 1: reaction between $CaO$ and $H _2 O$.
In this reaction calcium oxide and water combine to form a single product, calcium hydroxide. (which is called slaked lime. It is used to paint the walls)
Example 2 : Burning of coal.
$
C _{(s)}+ O _{2( g )} \rightarrow CO _{2( g )}
$
Example 3 : Formation of water.
$
H _{2( g )}+ O _{2( g )} \rightarrow 2 H _2 O _{(l)}
$
→ Chemical reactions involve the breaking and making of bonds between atoms to produce new substances.
•Combination reaction
"A reaction in which a single product is formed from two or more reactants is known as a combination reaction."
Example 1: reaction between $CaO$ and $H _2 O$.
In this reaction calcium oxide and water combine to form a single product, calcium hydroxide. (which is called slaked lime. It is used to paint the walls)
Example 2 : Burning of coal.
$
C _{(s)}+ O _{2( g )} \rightarrow CO _{2( g )}
$
Example 3 : Formation of water.
$
H _{2( g )}+ O _{2( g )} \rightarrow 2 H _2 O _{(l)}
$
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