Q1 of 11 Page 94

Prepare a list of the chemical changes that occur in your house and surroundings and discuss these in the class.

List of Chemical changes that occur in our surroundings:


a) Rusting of Iron


b) Combustion of plastic


c) Digesting food inside the body


d) The decaying of apple


e) Milk turning into curd


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4

Show with the help of diagram of electronic configuration how the following compound are formed from the constituent atoms.

Sodium chloride

 4

Show with the help of diagram of electronic configuration how the following compound are formed from the constituent atoms.

Potassium fluoride

 4

Show with the help of diagram of electronic configuration how the following compound are formed from the constituent atoms.

Water

 4

Show with the help of diagram of electronic configuration how the following compound are formed from the constituent atoms.

Hydrogen chloride