BEFORE STARTING THE QUIZ READ THESE BOOSTUP POITN OF CHEMICAL REACTIONS AND EQUATIONS .
CHEMICAL REACTIONS AND EQUATIONS BOOSTUP POINTS
🢂 Chemical reactions- The transformation of chemical substance into a new chemical substance by making and breaking of bonds between different atoms is known as Chemical Reaction.
🢂 Chemical Equation: The representation of chemical reaction by means of symbols of
substances in the form of formulae is called chemical equation.
H2 + O2 ⇒ H2O
🢂 Balanced Chemical Equation: A balanced chemical equation has number atoms of each
element equal on both left and right sides of the reaction.
Note- According to Law of Conservation of Mass, mass can neither be created nor
destroyed in a chemical reaction.
🢂 Types of Chemical Reactions-
1. Combination- When two elements or one element and one compound or two
compounds combines to give one single product.
2. Decomposition- Splitting of a compound into two or more simple products.
3. Displacement- It takes place when a more reactive metal displaces a less
reactive metal.
4. Double displacement- Reactions in which ions are exchanged between two
reactants forming new compounds are called double displacement reactions.
5. Precipitation- The insoluble compound called precipitate forms in this reaction.
6. Exothermic- Reactions which produce energy are called exothermic reaction.
Most of the decomposition reactions are exothermic.
7. Endothermic- Reactions which absorb energy are called endothermic reaction.
Most of the combination reactions are endothermic.
8. Oxidation: Gain of oxygen or removal of hydrogen or metallic element from a
compound is known as oxidation.
9. Reduction: Addition of hydrogen or removal of oxygen from a compound is
called reduction.
10. Redox- A chemical reactions where oxidation and reduction both take place
simultaneously are also known as redox reaction.
🢂 Rusting- When iron reacts with oxygen and moisture forms a red substance called rust.
🢂 Rancidity- Oils and fats when get oxidized on exposure to air show a change in taste and
smell.
🢂 Corrosion- Metals when attacked by oxygen, water, acids, gases, present in air changes
its surface which is called corrosion.
BELOW IS THE QUIZ WHICH YOU CAN ATTEND AT ANY TIME
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2 Comments
Nice practice
ReplyDeleteGot a good idea.
ReplyDeleteA good ideological teacher