6. Physical and Chemical Changes Class 7 Science [LATEST] Solutions Chapter Review in English - CBSE Study
NCERT Solutions for Class 7 Science are carefully prepared according to the latest CBSE syllabus and NCERT textbooks to help students understand every concept clearly. These solutions cover all important 6. Physical and Chemical Changes with detailed explanations and step-by-step answers for better exam preparation. Each Chapter Review is explained in simple language so that students can easily grasp the fundamentals and improve their academic performance. The study material is designed to support daily homework, revision practice, and final exam preparation for Class 7 students. With accurate answers, concept clarity, and structured content, these NCERT solutions help learners build confidence and score higher marks in their examinations. Whether you are revising a specific topic or preparing an entire chapter, this resource provides reliable and syllabus-based guidance for complete success in Science.
Class 7 English Medium Science All Chapters:
6. Physical and Chemical Changes
1. Chapter Review
Chapter Review:
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When any object or material transforms its colour, size and taste etc that is known as changes. Ex :- curd from milk, chapatti from Flour, chair from wood.
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There are two kinds of changes. (i) Physical changes (ii) Chemical changes.
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A change in which a substance undergoes a change in its physical properties is called a physical change.
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A change in which one or more new substances are formed is called a chemical change.
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This process of depositing a layer of zinc
on iron is called galvanisation. -
Large crystals of pure substances can be formed from their solutions. The process is called crystallisation.
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Oxygen and water (or water vapour) is essential for rusting.
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