Definitions [4]
Define the following.
Freezing point
The temperature at which a liquid turns into solid when cooled is known as the freezing point. The freezing point of water is 0°C.
Define the following.
Boiling point
The temperature at which water boils and changes to steam is called as boiling point. The boiling point of water is 100°C at atmospheric pressure.
Define the Soft water.
The water present in different natural sources has different substances dissolved in it. The water drawn from certain sources forms a lather with soap rather easily. Such water is called soft water.
Define the Hard water.
Water obtained from various sources does not easily form a lather with soap, rather it forms a white sticky scum or a precipitate. This water is called hard water.
Concepts [19]
- Position of Hydrogen in Periodic Table
- Dihydrogen
- Preparation of Dihydrogen
- Properties and Uses of Dihydrogen
- Hydrides
- Structure of Water
- Structure of Ice
- Physical Properties of Water
- Chemical Properties of Water
- Classification of water: Soft and Hard Water
- Causes of Hardness
- Removal of Hardness of Water
- Heavy Water
- Preparation of Hydrogen Peroxide
- Structure of Hydrogen Peroxide
- Physical Properties of Hydrogen Peroxide
- Chemical Properties of Hydrogen Peroxide
- Uses of Hydrogen Peroxide
- Dihydrogen as a Fuel
