Question

Water requires to be heated before it boils and becomes steam. The energy supplied by the heat is used in breaking hydrogen bonds between:

• A. hydrogen atoms of two different water molecules
• B. the hydrogen and oxygen within a water molecule
• C. one molecule of water and another
• D. water and the container

Answer 1

Answer: (C)

one molecule of water and another

The energy supplied by the heat is used in breaking hydrogen bonds between one molecule of water and another due to strong hydrogen bonding between $H_{2}O$ molecules as shown above.