3. 3
do one-mouth rule,
avoid using cellular phone while the
activity and discussion is ongoing,
avoid roaming around the
classroom.
have time management in every task,
observe health protocol.
4. REVIEW
Guide Question
1.What are the different
biomolecules?
2.Name the different examples of
biomolecules shows in the picture.
3.Identify what type of biomolecules
are they.
9. Performance Task
The learners shall be able to make either
a poster, a flyer, or a brochure on a product(
such as fuels, household, or personal care
products) indicating its uses, properties, mode
of action, and precautions.
Content Standard
The learners demonstrate an understanding
on the different aspects of chemical changes:
10. Melcs
Determine the limiting reactant in a
reaction and calculate the amount of
product formed
Code
S11/12PS-IIIh-27
11. Objectives
1. Identify the given and unknown in a
stoichiometry word problem.
2. Correctly label a balanced chemical
equation with the given and unknown
information
3. Solve a variety of stoichiometry
problems.
4. Appreciate the importance of
stoichiometry in real life situation.
12. Guide Question
1. What is stoichiometry?
2. How to solve one step
stoichiometry problem?
3. How it works in real life world?
13. LET’S THINK ABOUT IT
1. Which of the following contains the
same number of atoms?
a. 1 gram of atom
b. 1 mole of atom
c. 1 liter of atom?
14. “stochion” = element
“metron” = measurement
Stoichiometry is about
measuring the amounts of
elements and compounds
involved in a reaction.
15. 1
2 1
How can I have grilled
cheese sandwich?
2:1:1
2 bread : 1 cheese : 1 sandwich
17. a. How many bread can we used
to have seven grilled cheese?
b. How many cheese can we
used to make seven grilled
cheese?
I want seven grilled cheese sandwich.
1
2 1
18. 1
2 1
7
1
2
14
A
a. How many bread can we used to have
seven grilled cheese?
b. How many cheese can we used to
make seven grilled cheese?
19. 1
2 1
7
1
1
B
7
a. How many bread can we used to have
seven grilled cheese?
b. How many cheese can we used to
make seven grilled cheese?
20. LET’S DO IT!
1 Mole of N2 reacts with 3 Mole of H2 to
produce 2 moles of NH3
22. LET’S DO IT!
How many hydrogen molecules would they
react with if we have 10 nitrogen
molecules?
10 moles of N
3 moles of H
1 moles of N
30 moles of H
23. 4NH3 + 5O2 6H2O + 4NO
4 : 5 : 6 : 4
Can mean either:
4 molecules of NH3 react with 5 molecules of O2
to produce 6 molecules of H2O and 4 molecules of NO
OR
4 moles of NH3 react with 5 moles of O2
to produce 6 moles of H2O and 4 moles of NO
TRY IT AGAIN !
24. 4NH3 + 5O2 6H2O + 4NO
How many moles of H2O are produced if 2.00
moles of O2 are used?
2.00 mol O2 2.40 mol H2O
=
Notice that a correctly balanced equation is
essential to get the right answer
6 mol H2O
5 mol O2
TRY IT AGAIN !
25. 4 mol NO
6 mol H2O
4 NH3 + 5 O2 6 H2O + 4 NO
How many moles of NO are produced in the
reaction if 15 mol of H2O are also
produced?
15 mol H2O 10. mol NO
=
TRY IT AGAIN !
26. Question
1. What is stoichiometry?
2. What are the steps in
solving stoichiometry
problem?
29. Activity
*Group 1 “Pancake for Breakfast”
Learners will prepare pancakes for breakfast using steps in
stoichiometry.
*Group 2 “Adobo for Lunch”
The learners will act as a Filipino Chef who loves to cook adobo.
*Group 2 “Airbag for Safe Travel”
The learners will be given a problem about the right amount for airbag
used for safety travel.
*Group 4 “Fertilizer for Veggies”
The teacher will let the learners to formulate fertilizer for their vegetable
in the garden.
30. CRITERIA
EXCELLENT
5 points
VERY GOOD
4points
GOOD
3 point
FAIR
2 point
Need Improvement
1 point
SOLVING SKILLS All correct.
4 out of 5 is
correct.
3 out of 5 is
correct.
2 out of 5 is
correct.
1 out of 5 is correct.
CRITERIA
VERY GOOD
5 points
GOOD
3 points
FAIR
1 point
GROUP BEHAVIOR
AND PARTICIPATION
All members of the group
were actively participated and
show good manner in the
activity
Most members of the group
were actively participated
and show good manner in
the activity
Only few members of
the group were
actively participated
and show good
manner in the activity
TIME
MANAGEMENT
The group finished the activity
on time.
The group extend 1 to 2
minutes from the given time
The group extend
more than 2 minutes
from the given time
.
PRESENTATION
The audience was engaged
and presenter held audience’s
attention.
Majority of the audience was
engaged and presenter held
audience’s attention.
Half of the audience
was engaged and
presenter held
audience’s attention.
RUBRIC
37. Stoichiometry is the calculation of _________
and __________ in a chemical reaction.
_____________ is an important concept in chemistry
that helps us use balanced ______________ to
calculate amounts of reactants and products. To solve
for the stoichiometry we use of __________ from the
balanced chemical equation.
WORD BANK:
Products Stoichiometry Ratio
Reactants Chemical equation Chemistry
Products
Reactant
Stoichiometry
Chemical equation
Ratio
38. Using the given chemical equation below.
How many moles of HCl are needed to react
with 0.87 moles of Al?
0.87 moles of Al
6 moles of HCl
2 moles of Al
2.61 moles of
HCl
39. 1. Bring periodic table.
2. Study the following
stoichiometry;
a. Mass to mass conversion
b. Mass to mole conversion
c. Mole to mass steps conversion
40. Balance the equation.
Convert units of a given substance to moles.
Using the mole ratio, calculate the moles of
substance yielded by the reaction.
Convert moles of wanted substance to
desired units.
Editor's Notes
Which is equal to 600 billion trillion of atom
Remember that just like a dozen is twelve things, a mole is simply very large number of things. And because the mole refers to the number of things, we will need to use the extensively when we do stoichiometry.
It’s a lot like the way a chef measures the ingredient of a recipe. In fact, chemistry is a lot like cooking. Imagine for a second that you’re home alone and craving some grilled cheese sandwiches, but, you don’t know how to make one.
. So there you go, you’ve got your recipe. In chemistry the recipe is the balance chemical equation. So where does stoichiometry come in? let’s suppose you are super hungry and you want to make 7 grilled cheese sandwiches. You need to know how much of each ingredient to use. Lets start with the first ingredient.
. So there you go, you’ve got your recipe. In chemistry the recipe is the balance chemical equation. So where does stoichiometry come in? let’s suppose you are super hungry and you want to make 7 grilled cheese sandwiches. You need to know how much of each ingredient to use. Lets start with the first ingredient.
. So there you go, you’ve got your recipe. In chemistry the recipe is the balance chemical equation. So where does stoichiometry come in? let’s suppose you are super hungry and you want to make 7 grilled cheese sandwiches. You need to know how much of each ingredient to use. Lets start with the first ingredient.
Notice that this is really a unit problem and the balance equation is our conversion factor.
. So there you go, you’ve got your recipe. In chemistry the recipe is the balance chemical equation. So where does stoichiometry come in? let’s suppose you are super hungry and you want to make 7 grilled cheese sandwiches. You need to know how much of each ingredient to use. Lets start with the first ingredient.
Notice that this is really a unit problem and the balance equation is our conversion factor.
Okay, now we are going to do the exact same things with chemical that we just did with food. Check out this reaction.
This reaction is known as the Haber process, which is primarily used to make fertilizer.
Fertilizer helps crops grow and becomes part of our food. In fact, more than half of the Nitrogen in your body probably come from this reaction, so… it’s pretty important.
As it’s written, the reaction is not balance. The 1st step in solving stoichiometry problem is to balance the equation.
Any one from the class who wants to balance the said equation?
Okay, now we are going to do the exact same things with chemical that we just did with food. Check out this reaction.
This reaction is known as the Haber process, which is primarily used to make fertilizer.
Fertilizer helps crops grow and becomes part of our food. In fact, more than half of the Nitrogen in your body probably come from this reaction, so… it’s pretty important.
As it’s written, the reaction is not balance. The 1st step in solving stoichiometry problem is to balance the equation.
Any one from the class who wants to balance the said equation?
Okay, now we are going to do the exact same things with chemical that we just did with food. Check out this reaction.
This reaction is known as the Haber process, which is primarily used to make fertilizer.
Fertilizer helps crops grow and becomes part of our food. In fact, more than half of the Nitrogen in your body probably come from this reaction, so… it’s pretty important.
As it’s written, the reaction is not balance. The 1st step in solving stoichiometry problem is to balance the equation.
Any one from the class who wants to balance the said equation?
