A compound forms whenever two or more atoms form chemical bonds with each other. The chemical formula for water is H2O, which means each molecule of water consists of one oxygen atom chemically bonded to two hydrogen atoms. Thus, water is a compound.

It's a compound because it combines two elements (H-Hydrogen and O-Oxygen) to form water (H2O), which is a compound. ... The 2 elements are hydrogen and oxygen. In a water molecule their are 2 hydrogen atoms and 1 oxygen atoms attached by covalent bonds .

Water is a Compound

Water is a compound because it is composed of two different elements, hydrogen and oxygen. It is represented by the chemical formula H2O, which indicates that it consists of two hydrogen atoms bonded to one oxygen atom. This chemical composition is consistent regardless of whether the water is in liquid, solid (ice), or gaseous (water vapor) form.

Explanation:

1. Definition of a compound:
- A compound is a substance formed when two or more different elements chemically combine in a fixed ratio.
- The properties of a compound are different from the properties of its constituent elements.

2. Water as a compound:
- Water is made up of hydrogen and oxygen, two different elements that chemically combine to form water molecules.
- The ratio of hydrogen to oxygen in water is always 2:1, which is a fixed ratio.
- The chemical bonds between the hydrogen and oxygen atoms are covalent bonds, meaning they involve the sharing of electrons.
- These covalent bonds give water its unique properties, such as its ability to dissolve many substances and its high boiling point.

3. Difference between compounds and mixtures:
- A mixture is a combination of two or more substances that are physically mixed together but not chemically combined.
- In a mixture, the substances retain their individual properties and can be separated by physical means, such as filtration or evaporation.
- In contrast, compounds have a fixed composition and can only be separated into their constituent elements by chemical means, such as electrolysis or decomposition.

4. Water as a solution or mixture:
- Water can also exist as a solution or a mixture, but in its pure form, it is a compound.
- A solution is a homogeneous mixture where one substance is dissolved in another, such as saltwater.
- Water can dissolve many substances to form solutions, but the water itself remains a compound.
- For example, when salt (sodium chloride) is dissolved in water, it forms a homogeneous solution where the salt ions are dispersed throughout the water molecules.

Conclusion:

Water is classified as a compound because it is composed of hydrogen and oxygen atoms that chemically combine in a fixed ratio. It is not a mixture or an element. Understanding the classification of water as a compound helps us comprehend its unique properties and its importance in various biological and physical processes.