ASSESSMENT ZONE 1. Choose the correct answer. Which among the following is a physical change? Cutting c. Ripening a. om 2 a. Burning c. Ripening b. Burning d. Cooking Which of the following is a chemical change? b. Germination d. All of these What is the chemical formula of rust? b. Fego, d. Ca(OH)2 What is depositing a layer of zinc on iron called? 3. a. a. Fe 0,XHO Feo C. 4. 5. a. Galvanisation c. Sublimation b. Crystallisation What is the reaction in which a solid substance is obtained in its purest form? d. Layering a. Displacement reaction b. Combination reaction c. Crystallisation d. Decomposition reaction B. Fill in the blanks. 1. A reversible change is one in which the substance can be recovered. 2. When carbon dioxide gas is passed through lime water it turns 3. Two methods by which rusting of iron can be prevented are and 4. Changes in which only properties of a substance change are called physical changes. 5. Changes in which new substances are formed are called changes.
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cutting is physical change and chemical change is burning
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