Question

which of the following is a compound?

A.wood B.iron C.water D.air​

Answer 1

As we know Water is a compound of hydrogen and oxygen.

• As we know that the important differences between the properties of a mixture and a compound. In this table, the column 'Mixture' refers to the gasses of hydrogen and oxygen, and the column named 'Compound' refers to water.

As we know that the Water is a compound because it is made up of water molecules.

• As we know that There is no such thing as water atoms.
• The Water molecules are made of hydrogen and oxygen atoms, in the definite proportion of two hydrogens for one oxygen.

• So, Water is formed by the chemical reaction between a hydrogen molecule and an oxygen molecule.
• That's why This implies that water is a compound and not an element.
• So, This is because an element's properties remain uniform irrespective of external conditions.
• Thus, the Water is stable at room conditions.

Hence, The correct option is C. Water.

Answer 2

1)Water is a compound because a compound forms whenever two or more atoms form chemical bonds with each other.  

2)Each molecule of water consists of one oxygen atom chemically bonded to two hydrogen atoms.  

3)The chemical formula for water is H2O.

Hence, the correct option is (C) water.