Chemical Reactions and Equations
Chemical Reactions:-If two or more substances reacts together and form two or more new substance then such reaction is called chemical reaction.
- Those substance which take part in chemical reation are known as reactants.
- those new substances which form as a results of reaction are known as products.
- in every chemical reaction the previous bonds between the molecules are broken and new bonds are formed so ,that new substances are obtained.
- change of colur
- evalution of gas
- change of tempreture
- change of physical state
- formation of precipitate
when copper is heated in oxygen it converts into cupric oxide.
2 cu + O2 ➝ 2 cuo
(red brown) (black)
in this reaction copper is red brown metal and cupric oxide is black in colour thus as a results of reaction there is change in colour.
(2) Evalution of gas:-
when zink reacts with dilute sulphuric acid then zink sulphuric is formed and hydrogen gas envolves.
zn + H2 sO4 ➝zn sO4
A gas envolves as a results of reaction.
(3) change in tempreture:-
when water is added to quick lime then it becomes not because its tempreture rises similiarly when glucose added in water then tempreture falls.
thus as a results of reaction tempreture may increases decrease.
(4)Change of physical state:-
when solid carbon react with oxygen it burn to produce carbon dioxide thus, solid carbons convrts into gaseous.
C + O2 ➝ CO2
(5) Formation of participate:-
when two solution reacts together and insoluble solid subtance seprates from the solution then such reaction is known as participitation and the solid seprated from the solution is called participate.
example - when silver nitrate solution is mixed with sodiumchlorides solution then a white particiapate of silver chloride is obtained.
AgNO3 + Nacl ➝ Agcl↓ +NaNO3
Bacl + NaSO4➝ BaSO4↓+ 2Nacl
Chemical Equations:-
comming soon.....
chemical reaction equations list
comming soon.....
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