Question

explain the following terms with one example each ;

1) Corrosion

2) rancidity

3) balanced chemical equation

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Answer 1

Explanation:

Corrosion: It is the process in which metals are slowly eaten up by the action of air moisture or chemicals. ... Rancidity: When the substance containing oils and fats are exposed to air they get oxidised and become rancid due to which their smell, taste and colour change. This process is known as rancidity.A balanced chemical equation occurs when the number of the atoms involved in the reactants side is equal to the number of atoms in the products side.

Answer 2

Answers

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a) Corrosion

it is the process in which metal react with substances present in the atmosphere to form surface compound e.g. iron react with oxygen in presence of moisture to form rust ( Fe2O2.xH2O( hydrated iron(iii) oxide )) .

b) Rancidity

when food items prepared in oil such as potato chips are kept for long time fat and oil present in them Get oxidised by the oxygen and they start giving unpleasant smell and taste this condition produced by aerial oxidation of fats and oil in foods marked by unpleasant smell and taste is called rancidity . rancidity spoil the food materials and make them unfit for eating.

c) Balanced chemical equation

balance chemical equation means total number of atom of each element should be equal on both side of the reaction .

For example - 2Mg(s) + O2 ===> 2MgO(s)

magnesium and oxygen combine to form a single compound magnesium oxide .

the reaction should be balance because matter can neither be created nor be destroyed the total mass of reactants should be equal to the total mass of product .

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