meee

2. LEARNING COMPETENCY
• Calculate the amount of substances
used or produced in a chemical
reaction
OBJECTIVES:
At the end of this lesson, students
should be able to:
• Calculate the amount of substances
used or produced in a chemical

3. ESSENTIAL QUESTION
At the end of this lesson, the student
should be able to answer the
following question.
• How do you use mole ratios in
calculating the amount in moles of
substances used or produced in a
chemical reaction?

4. ARE YOU BORED?
LET’S HAVE A
GAME !

5. This game is a short
recap of our
previous topic but
before we proceed
to our game

6. ARE YOU READY?

7. INIZIAMO!

9. LAW CONSERVATION OF MASS
The law of conservation of mass states
that there is no observable change in the
quantity of matter undergoing a physical or
chemical change. This means that for a
chemical reaction, the total mass of reactants
will be equal to the total mass of the products.

10. STOICHIOMETRY
The word stoichiometry comes from the Greek
words stoicheion meaning "elements" and métron
meaning "to measure". It deals with the study of
the quantitative relationships between the
amounts of reactants used and the amounts of
products formed in a chemical reaction.

11. MOLE RATIO
The mole ratio is the ratio between the
amounts (in moles) of any two compounds
involved in a chemical reaction. Mole ratios are
obtained from balanced chemical equations, and
they can be used as conversion factors between
products and reactants in solving chemical
problems.

12. MOLE TO MOLE STOICHIOMETRY
When there is a balanced equation
and the objective is to convert from moles
of one substance in a chemical reaction
to moles of a different substance in the
reaction.

13. EVALUATION

14. IDENTIFY IF THE
STATEMENT IS TRUE OR
FALSE

15. 1. Mole ratios are obtained
from balanced chemical
equations

16. 2. The word stoichiometry
comes from the Greek
words stoicheion meaning
"elements"

17. 3. The law of conservation of
mass states that there is a
observable change in the
quantity of matter undergoing
a physical change.

18. 4. Mole ratios cannot be
obtained from balanced
chemical equations

19. 5. Stoichiometry deals with the study
of the quantitative relationships
between the amounts of reactants
used and the amounts of products
formed in a chemical reaction.

20. ANSWERS:
1. TRUE
2. TRUE
3. FALSE
4. TRUE
5. TRUE

21. THANK YOU !!!