3. Explain with examples three types of chemical
changes. Give an example for each.
Answers
Answer:
- 1 making milk to curd because curd can not be changed again into milk 2burning of paper because the Ashes of paper can't again change into paper 3 rotting of a fruit or vegetable because we can't make that vegetable or fruit fresh
I've described 5 types of chemical reactions, Pick three which are easy for you to remember :)
The 5 primary types of chemical reactions are:
The 5 primary types of chemical reactions are:1)Combination reaction
The 5 primary types of chemical reactions are:1)Combination reaction2)Decomposition reaction
The 5 primary types of chemical reactions are:1)Combination reaction2)Decomposition reaction3)Displacement reaction
The 5 primary types of chemical reactions are:1)Combination reaction2)Decomposition reaction3)Displacement reaction4)Double Displacement reaction
The 5 primary types of chemical reactions are:1)Combination reaction2)Decomposition reaction3)Displacement reaction4)Double Displacement reaction5)Precipitation Reaction
The 5 primary types of chemical reactions are:1)Combination reaction2)Decomposition reaction3)Displacement reaction4)Double Displacement reaction5)Precipitation Reaction1. Combination Reaction
A reaction in which two or more reactants combine to form a single product is known as a combination reaction.
It takes the form of X + Y → XY
Combination reaction is also known as a synthesis reaction.
Example of combination reaction: 2Na + Cl2 → 2NaCl
2. Decomposition Reaction
A reaction in which a single compound breaks into two or more simpler compounds is known as a decomposition reaction.
It takes the form of XY → X + Y
A decomposition reaction is just the opposite of combination reaction.
Example of a decomposition reaction: CaCO3 → CaO + CO2
The reaction in which a compound decomposes due to heating is known as a thermal decomposition reaction.
3. Displacement Reaction
A chemical reaction in which a more reactive element displaces a less reactive element from its aqueous salt solution.
It takes the form X + YZ → XZ + Y
It is also called a substitution reaction
Example of displacement reaction: Zn + CuSO4 → ZnSO4 + Cu
4. Double Displacement Reaction
A chemical reaction in which ions gets exchanged between two reactants which form a new compound is called a double displacement reaction.
It takes the form of XY + ZA → XZ + YA
It is also called a metathesis reaction
Example of double displacement reaction:
BBaCl2 + Na2SO4 → BaSO4 + 2NaCl
5. Precipitation Reaction
A chemical reaction that involves the formation of an insoluble product (precipitate; solid) is called Precipitation reaction.