Question

State 2 examples in each case and write their chemical formula. (a) molecules having one kind of atoms only. (b) molecules having 2 different kinds of atom.(c) molecules having 3 different kinds of atom

Answer 1

Answer:

a)o2,h2

b)h2o,co2

c)c6h12o6 glucose,na2so4 sodium sulphate

Answer 2

• Examples of molecules having one kind of atom only are Oxygen and Hydrogen.
• The chemical formula of Oxygen and Hydrogen are O₂ and H₂ respectively.
• Examples of molecules having 2 different kinds of atoms are Methane and Ethane.
• The chemical formula of Methane and Ethane is CH₃ and C₂H₆ respectively.
• Examples of molecules having 3 different kinds of atoms are Sodium Carbonate and Sucrose.
• The chemical formula of Sodium Carbonate and Sucrose is Na₂CO₃ and C₁₂H₂₂O₁₁ respectively.