Question

Areeba’s younger brother is suffering from dehydration. To combat dehydration she suggested him to take non-alcoholic drink like coconut water, barley water, sugarcane juice, glucose water etc., in plenty. Every cell in out body needs water in order to function properly as out body contains about 70% of water. 

Read the above passage and answer the questions that follows: 

(i) Name the elements present in water. 

(ii) Write electronic configuration of both the elements. 

(iii) How will you make children aware of taking sufficient amount to liquids and water to prevent dehydration?

Answer 1

(i) The chemical formula for water is H₂O, so the elements in the water are Hydrogen and Oxygen

(ii) Electronic configurations:

Hydrogen: 

Atomic number = 1 

Configuration = 1 

Oxygen: 

Atomic number = 8 

Configuration = 2, 6 

(iii) Teaching children about the advantages of taking sufficient amount of liquids and drinking water can be done to aware them about importance of water in our bodies. Our bodies are made up of almost 70% water and it is required by our cells for the proper functioning. Also giving the children knowledge about the harmful effects the lack of liquids has on our bodies like dehydration, improper excretion, headaches, etc., are some methods that can be used to spread awareness.