(d) Changes in which only physical properties of a substance change are called physical changes. (c) Two methods by which rusting of iron can be prevented are galvanization and painting. (b) The chemical name of baking soda is sodium hydrogen carbonate. (a) When carbon dioxide is passed through limewater, it turns milky due to the formation of calcium carbonate (CaCo 3) (e) Changes in which new substances are formed are called _changes.Īns. (d) Changes in which only _ properties of a substance change are called physical changes. (c) Two methods by which rusting of iron can be prevented are _and (b) The chemical name of baking soda is _. (a) When carbon dioxide is passed through lime water, it turns milky due to the formation of _. Fill in the blanks in the following statements: (True/False)Ĭutting a log of wood into pieces is a physical change.įormation of manure from leaves is a chemical change. (e) Condensation of steam is not a chemical change. (d) Iron and rust are the same substances. (c) Iron pipes coated with zinc do not get rusted easily. (b) Formation of manure from leaves is a physical change. (a) Cutting a log of wood into pieces is a chemical change. In case a statement is false, write the corrected statement in your notebook. State whether the following statements are true or false. (e) Beating aluminium to make aluminium foil → Physical change (b) Dissolving sugar in water → Physical change (e) Beating aluminium to make aluminium foilĪns. Classify the changes involved in the following processes as physical or chemical changes:
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