ICSE Worksheet for Chapter - 6 Water Class 8

ICSE Worksheet for Chapter - 6 Water Class 8

Worksheets For class 8

Find ICSE Worksheet for chapter-6 Water class 8

1. CLASS-8
2. BOARD: ICSE
3. Chemistry Worksheet - 6
4. TOPIC: Water
5. For other ICSE Worksheet for class 8 Science check out main page of Physics Wallah.

SUMMARY –

• Occurrence of water, water cycle.
• Purification, composition and synthesis of water.
• Physical and chemical properties, tests and uses of water.
• Solution – definition, saturated and unsaturated solutions, solubility.
• Crystals – definition, crystallization, hydrated and anhydrous crystals.
• Efflorescent, deliquescent and hygroscopic substances.

SECTION – 1

1. Fill in the blanks :
   1. Solubility of sugar in water _____________with increase in temperature.
   2. Density of ice is __________than the density of water.
   3. The percentage of water in our body is _______ .
   4. Water has maximum density at_______ .
   5. The liquid that dissolve in water are called _______________ liquids.
   6. The process of removing salt from sea water is called ___________.
   7. Water that lathers easily with soap is ___________water.
2. Match the following :
   1. COLUMN A COLUMN B
   2. A. The product formed                       when hydrogen Calcium oxide is burnt in air
   3. B. The acid formed                           when SO ₂ dissolves Hydrogen in water
   4. C. The gaseous product formed       when Water Magnesium reacts with boiling water
   5. D. A hygroscopic substance             Sulphurous
   6. E. An efflorescent crystal                  Washing soda
3. Complete the following reaction and balance it :
   1. P + O ₂ à
   2. K ₂ O + H ₂ O à
   3. Al + H ₂ O à
   4. SO ₂ + H ₂ O à
4. State true and false :
   1. Sodium burns in water with blue flame.
   2. Dissolved air contains a higher percentage of oxygen than ordinary air.
   3. A saturated solution is one which cannot dissolve more of solute at any given temperature.
   4. A metallic oxide dissolves in water to give an acid.
   5. Temperature of lands near the sea are lower than the temperature of lands away from the sea.

SECTION -2

1. Write equation for the following reactions :
   1. Action of steam on Iron
   2. Action of cold water on Sodium metal.
   3. Dissolution of Carbon dioxide in water
   4. Conversion of Aluminium to Aluminium oxide.
   5. Action of boiling water on Magnesium
2. Give two examples of water each occurring in-
   1. Solid state
   2. Liquid state
   3. Gaseous state
3. Describe an experiment:
   1. to study the composition of water.
   2. for the synthesis of water
4. Give two tests to detect the presence of water.
5. Explain the following terms giving example :
   1. Efflorescent substance
   2. Deliquescent substance
   3. Hygroscopic substances
   4. Drying agents
   5. Desiccating agents
   6. Dehydrating agents
6. Give two reactions to prove that water acts as a catalyst.