NOTES
• CLASS:10
• SUBJECT:
Science(CHEMISTRY)
• CHAPTER-1:CHEMICAL
REACTIONS & EQUATIONS
• FEATURES:-
SHORT AND EASY NOTES
WITH ALL IMPORTANT
QUESTION/ANSWER
VERY EASY TO
UNDERSTAND
, When two reactants are mixed to form a
product is called chemical reaction
CHANGES OCCUR DURING A
REACTION
F- Formation of precipitate
E- Evolution of gas
C- Change in color
T- Change in temperature
S- State change
Notation in chemical equations
I. G- Gas
II. L- Liquid
III. S- Solid
IV. aq – aqueous
, BALANCING EQUATION
Que. What is balancing equation??
• Ans. A balancing equation is a
chemical equation where the number
of atoms of each element is the same
on both sides. It follows the law of
conservation of mass. We balance it
by adding numbers (called
coefficients) in front of the formulas,
without changing the actual
substances.
• Example:
Unbalanced: H₂ + O₂ → H₂O
Balanced: 2H₂ + O₂ → 2H₂O
• CLASS:10
• SUBJECT:
Science(CHEMISTRY)
• CHAPTER-1:CHEMICAL
REACTIONS & EQUATIONS
• FEATURES:-
SHORT AND EASY NOTES
WITH ALL IMPORTANT
QUESTION/ANSWER
VERY EASY TO
UNDERSTAND
, When two reactants are mixed to form a
product is called chemical reaction
CHANGES OCCUR DURING A
REACTION
F- Formation of precipitate
E- Evolution of gas
C- Change in color
T- Change in temperature
S- State change
Notation in chemical equations
I. G- Gas
II. L- Liquid
III. S- Solid
IV. aq – aqueous
, BALANCING EQUATION
Que. What is balancing equation??
• Ans. A balancing equation is a
chemical equation where the number
of atoms of each element is the same
on both sides. It follows the law of
conservation of mass. We balance it
by adding numbers (called
coefficients) in front of the formulas,
without changing the actual
substances.
• Example:
Unbalanced: H₂ + O₂ → H₂O
Balanced: 2H₂ + O₂ → 2H₂O
