When an element ‘X’ with atomic number 11 is made to react with an element ‘Y’ which is a greenish yellow gas, a
compound ‘Z’ is obtained.
a. Identify X ,Y & Z.
b. Specify is this a physical or chemical change with reason.
c. Write the word equation and chemical equation for the above reaction.
d. Balance the equation using dal or coloured bindi in a half sized chart.
Answers
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a. X is sodium, Y is chlorine and Z is Sodium Chloride
B. It is a chemical change as a new product is formed.
c. Sodium+Chlorine=Sodium Chloride
2 Na+Cl2= 2 NaCl
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