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Chemical Reactions and Equations
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This is the PYQS notes of chapter 1 of Chemistry class 10th If want more Please send review for more Thank you!
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. adhle.i @ adhle.iChemical
Reac ions &
Eq a ions
CH 1 Sc c Ca 10
No e + 10 Yea In eg a ed PYQ'
,. adhle.i @ adhle.i
adhle.in
,. adhle.i @ adhle.i
adhle.in
, Chemical Reactions and Equations
What is Chemical Reaction ?
A chemical reaction is in which the bonds are broken within reactant molecules ,
and
new bonds are
formed within product molecules in order to
form a new substance .
How to know if Chemical Reaction has taken place ? (MBF Er ?)
These type of observations help to determine wheter chemical reaction has taken
us a
place
-
•
change in state
•
change in colour
•
change in temperature
evolution
gas of a
•
formation of precipitate
•
chemical Equation
The simplest to write
equation this in the
equation
way
an is
form a word -
Oxide
Magnesium + Oxide →
Magnesium
( Reactants) (
Product )
Chemical equations can be made more concise and useful if we use chemical
formulae instead
of words .
Mg t Oz → MgO
Magnesium -1 Oxide Magnesium
Oxide
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