Chemical Equation


 
 
Concept Explanation
 

Chemical Equation

Chemical equations:

A Chemical Equations is the shorthand form of representing a chemical reaction using symbols and formula. The element/compounds involved in the reaction are called reactants and the new elements/compounds formed are called the products. Steps to write the chemical equation:

1)    Identify the reactants and the products of the chemical reaction.

2)    Write the names of the reactants on the left hand side & products on the right hand side with a ‘+’ sign between them. Place arrow (--à) between the two sides. This equation is called word equation.

3)    Replace the names of the products and reactants with symbols & formulae. This gives chemical equation.

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Sample Questions
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Question : 1

The element/compounds involved in the chemical reaction are called _________________ .

Right Option : A
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Question : 2

Which of the following are correct ?

(a) A Chemical Equations is the shorthand form of representing a chemical reaction using symbols and formula.

(b) The element/compounds involved in the reaction are called products and the new elements/compounds formed are called the reactants.

Right Option : A
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Question : 3

Mtavh column - I with Column - II and select the correct answer using the codes given below the columns:

Column - I     Column - II
A. Pasteurisation of milk (p) Produce sound and heat is relased
(B) Explosion of fireworks  (q) Rusting of iron
(C) A chemical equation (r) Phycial change
(D) Formation of iron oxide (s) Magnesium (Mg) + Oxygen large (O_2)rightarrowMagnesium oxide (MgO)

      

Right Option : B
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