Question

Descibe the various types of chemical reaction with examples?.

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Answer 1

Answer:

The five basic types of chemical reactions are combination, decomposition, single-replacement, double-replacement, and combustion. Analyzing the reactants and products of a given reaction will allow you to place it into one of these categories. Some reactions will fit into more than one category.

Explanation:

A chemical reaction is typically followed by physical signs that are readily detected, such as heat and light emission, precipitate formation, gas evolution, or a change of appearance.

Answer 2

Chemical Changes

Some common chemical canges are =

• Burning of coal (or carbon), wood, paper, kerosene, LPG, petroleum etc.

• Burning of candle

• Formation of curd from milk (or cursing of milk)

• Electrolysis of water to form hydrogen and oxygen

• Rusting of iron

• Ripening of fruits, and growing of a plant into a tree

• Bursting of a cracker

• Cooking of food

• Digestion of food

• Germination of seeds

• Respiration by living organisms

Characteristics of a Chemical Change

All chemical changes show the following characteristics:

• During a chemiy change, new substances with different properties are formed.

• Chemical chnages are permanent. Thus a chemical change cannot be reversed by simple physical methods.

• Relatively larger amount of heat is either absorbed or evolved during a chemical change.

• Chemical changes occur only under proper conditions.