Water

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The chemical formula of water is H₂O. This means one molecule of water consists of 2 hydrogen atoms and 1 oxygen atom bonded together.

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Water is called a compound because it is made up of two different elements—hydrogen and oxygen—chemically combined in a fixed ratio (2:1). It can be broken down into simpler substances only by chemica…

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The three states of water are: 1. Solid – Ice (e.g., snow, glaciers) 2. Liquid – Water (e.g., rivers, lakes) 3. Gas – Water vapour (e.g., steam, moisture in air)…

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A solute is the substance that dissolves in a solvent to form a solution. Example: Sugar is the solute when it dissolves in water to make sugar solution.

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A solvent is the substance in which the solute dissolves. It is usually present in larger amount. Example: Water is the solvent in a saltwater solution.

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A solution is a homogeneous mixture formed when a solute dissolves completely in a solvent. Example: Salt dissolved in water forms a salt solution.

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Water is called a universal solvent because it can dissolve a large number of substances—solids, liquids, and gases—due to its polar nature. For example, it dissolves sugar, salt, and even gases like …

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Copper sulphate dissolves in water to form a blue-colored solution. Reaction: CuSO₄(s) → CuSO₄(aq) This shows water's ability to dissolve solids and form solutions.