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Notes CHEMICAL REACTION AND EQUATIONS

CHEMICAL REACTION and EquationsSCIENCE AND TECHNOLOGY 70 NotesMODULE - 2 Matter in our Surroundings4 CHEMICAL REACTION ANDEQUATIONSE veryday we observe different types of changes in our surroundings. Some of thesechanges are very simple and are of temporary nature. Some others are reallycomplex and of permanent nature. When ice kept in a tumbler is exposed to theatmosphere, it melts and is converted into water. When the tumbler containing thiswater is kept in a freezer it is converted again into ice.

reactants. In reaction (2) zinc and dilute sulphuric acid are the reactants. Similarly in reaction (1) magnesium oxide is a new substance formed. It is the product. Can you now say what is the product in reaction (2)? Yes, it is zinc sulphate and hydrogen. In chemical reaction, the reactant (s) is (are) written on the left hand side and the

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