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Physical and Chemical Changes worksheet for class 7

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CBSE worksheets for Physical and Chemical Changes worksheet for class 7 in PDF for free download. Science worksheets for class 7 CBSE includes worksheets on Physical and Chemical Changes as per NCERT syllabus. CBSE class 7 worksheets as PDF for free download Physical and Chemical Changes worksheets. Users can download and print the worksheets on class 7 Science Physical and Chemical Changes for free.

Download Physical and Chemical Changes worksheet for class 7

Symmetry worksheet for class 7 Important Topics


Physical and Chemical Changes worksheet for class 7

Some important Facts about Physical and Chemical Changes worksheet for class 7

  1. Describe two changes that are harmful. Explain why you consider them harmful. How can you prevent them?
  2. Take three glass bottles with wide mouths. Label them A, B and C. Fill about half of bottle A with ordinary tap water. Fill bottle B with water which has been boiled for several minutes, to the same level as in A. In bottle C, take the same boiled water and of the same amount as in other bottles. In each bottle put a few similar iron nails so that they are completely under water. Add a teaspoonful of cooking oil to the water in bottle C so that it forms a film on its surface. Put the bottles away for a few days. Take out nails from each bottle and observe them. Explain your observations.
  3. Prepare crystals of alum.
  4. Collect information about the types of fuels used for cooking in your area. Discuss with your teachers/parents/others which fuels are less polluting and why.

NCERT class 7  Science Solved Worksheets

  • Chapter-1 Nutrition in Plants
  • Chapter-2 Nutrition in Animals
  • Chapter-3 Fiber to Fabric
  • Chapter-4 Heat
  • Chapter-5 Acids, Bases and Salts
  • Chapter-6 Physical and Chemical Changes
  • Chapter-7 Weather, Climate And Adaptation
  • Chapter-8 Wind Storms and Cyclones
  • Chapter-9 Soil
  • Chapter-10 Respiration in Organisms
  • Chapter-11 Transportation in Animals and Plants
  • Chapter-12 Reproduction in Plants
  • Chapter-13 Motion and Time
  • Chapter-14 Electric Current and its Effect
  • Chapter-15 Light
  • Chapter-16 Water A Precious Resource
  • Chapter-17 Forests: Our Lifeline
  • Chapter-18 Waste Water Story

CBSE Worksheets for class 7 Science in PDF


In Class VI you have learnt that salt can be obtained by the evaporation of sea water. The salt obtained in this manner is not pure and its crystals are small. The shape of the crystals cannot be seen clearly. However, large crystals of pure substances can be formed from their solutions.

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