Element and Compound

Author:West Bengal Board
6th West Bengal Board
IMPORTANT

Important Questions on Element and Compound

EASY
IMPORTANT
Environment and Science Class 6>Element, Compound and Mixture>Element and Compound> Q 1

Write the names of the elements of atoms of which are present in the following compounds:

Name of Compound Atoms of which elements are present in it?
Water  
Carbon dioxide  
Sugar Carbon, Hydrogen, Oxygen
Salt Sodium, Chlorine
Quicklime Calcium, Oxygen

HARD
IMPORTANT
Environment and Science Class 6>Element, Compound and Mixture>Element and Compound> Q 2

Look at the picture and fill the following table.

Question Image

Name of compound Name of the constituent elements Number of atoms of those elements present in a molecule
Water    
Hydrogen chloride    
Carbon dioxide    

 

MEDIUM
IMPORTANT
Environment and Science Class 6>Element, Compound and Mixture>Element and Compound> Q 3

Hold a strip of magnesium with a pair of forceps, place it in the fire; observe and complete the table.

                    What you see              What does it happen