Instructional Plan (iPlan) Template
(With inclusion of the provisions of DepEd Order No. 8, s. 2015)
Learning Area: PHYSICAL SCIENCES Grade Level: Grade – 11
iPlan No: 23 Quarter: Third Duration: 1 hour
Learning Use simple collision theory to explain the effects of Code:
Competency/ies: concentration, temperature, and particle size on the rate of S11/12PS-IIIf-23
reaction.
Key Concepts/ The Collision Theory and Factors Affecting the Rate of a Chemical Reaction
Understanding to be
Developed
1. OBJECTIVES A. KNOWLEDGE Explain the collision theory.
Describe the factors affecting the rate
of reaction such as concentration,
temperature, and particle size.
B. SKILLS Draw a diagram showing the correct
orientation of collision between the
reactants to form the product.
C. ATTITUDE Participate actively in learning actively.
D. VALUES Practice oneness in pair work.
2. CONTENT How chemical changes take place
3. LEARNING Physical Science CG, pp. 4.
RESOURCES Caintic, H.E. (2016). Physical Science. C & E Publishing, Inc., Quezon City.
4. PROCEDURES
4.1 Introductory Activity 1. Communicating learning objectives
2. The teacher defines chemical kinetics.
Chemical reactions happen when the reactants collide. But will all collisions result in a
reaction or are there requirements for a reaction to occur after collision?
4.2 Activity To find out if learners are ready to learn the new lesson, they will answer the following
activity. Find a pair from your seatmate and balance the following equation.
1. C + SO2→ CS2 + CO
2. NO + O2→ NO2
4.3 Analysis 1. How did you find the activity?
2. What is the general equation that represents a chemical reaction?
3. How do reactions happen?
(Solicit varied answers from the students.)
4.4 Abstraction Lecture-Discussion of Key Concepts:
According to the collision theory, the rate of reaction is directly proportional to the
number of collisions between the reactants.
An effective collision is characterized by reactants colliding with proper orientation
and enough energy to surpass the activation energy.
The activation energy or energy barrier is the energy needed to be surpassed by the
reactants so that they will be transformed into products.
There are three factors that affect the rate of the reaction: 1) concentration,
2)temperature, and 3) particle size.
Increasing the concentration or the temperature of the reaction leads to an increase in
reaction rate. On the other hand, decreasing the particle size increases the reaction rate.
4.5 Application Try it by pair.
Consider the reaction N2 + O2→ N2O2. Refer to the structures of N 2, O2, and N2O2 below
(blue=N, red=O):
Make a diagram showing the correct orientation of collision between the reactants to form
the product.
4.6 Assessment Determine which condition (A or B) will make the reaction go faster.
Reaction Condition A Condition B
2Mg + O2→ 2MgO Mg ribbon is used. Powdered Mg is
used.
N2 + 3H2→ 2NH3 The reaction The reaction
temperature is 30oC. temperature is 0oC.
2NaCl + Pb(NO3)2→ The concentration of The concentration
PbCl2 + 2NaNO3 NaCl is 1M(molarity). of NaCl is 2M.
Solution:
Reaction Answer Reason
2Mg + O2→ 2MgO
N2 + 3H2→ 2NH3
2NaCl + Pb(NO3)2→ PbCl2 + 2NaNO3
4.7 Assignment What do you think?
Another factor that increases reaction rate is the presence of a catalyst. A catalyst is a
chemical species that participates in the reaction but does not get used up. How does a
catalyst speed up a reaction?
4.8 Concluding Activity
5. Remarks
6. Reflection
Prepared by:
Name: CATHERINE B. BUTRON School: BUGANG NATIONAL HIGH SCHOOL
Position/Designation: SST I Division: BOHOL
Contact Number: 09073318244 Email address:cathbermzky@gmail.com
Instructional Plan (iPlan) Template
(With inclusion of the provisions of DepEd Order No. 8, s. 2015)
Learning Area: PHYSICAL SCIENCES Grade Level: Grade – 11
iPlan No: 23 Quarter: Third Duration: 1 hour
Learning Define catalyst and describe how it affects reaction rate. Code:
Competency/ies: S11/12PS-IIIf-23
Key Concepts/ Catalysts: How Reaction Rate Is Affected
Understanding to be
Developed
1. OBJECTIVES E. KNOWLEDGE Define catalyst.
Describe how catalyst affects the
reaction rate.
F. SKILLS Differentiate homogeneous,
heterogeneous, and biological catalyst.
G. ATTITUDE Participate actively in learning actively.
H. VALUES Participate actively in class discussion.
2. CONTENT How chemical changes take place
3. LEARNING Physical Science CG, pp. 4.
RESOURCES Caintic, H.E. (2016). Physical Science. C & E Publishing, Inc., Quezon City.
4. PROCEDURES
4.1 Introductory Activity 1. The teacher introduces the learning objectives.
2. Review previous lesson on the collision theory and thefactors affecting the rate of a
chemical reaction.
4.3 Activity Consider the points A and B separated by a cliff. The way to get from points A to B is to
go around the cliff following the red path. It would take a lot of time and energy to reach
point B.
What happens when a bridge is built between A and B?
4.3 Analysis 1. How did you find the activity?
2. What is a catalyst?
3. How does it affect reaction rates?
(Solicit varied answers from the students.)
4.4 Abstraction Lecture-Discussion of Key Concepts:
A catalyst is a substance that increases the reaction rate without being consumed by
the reaction.
A catalyst increases the rate of the reaction by lowering the activation energy of a
reaction.
A homogeneous catalyst exists in the same phase as the reaction it catalyzes.
A heterogeneous catalyst exists in a different phase as the reaction it catalyzes.
Enzymes are homogeneous, highly specific, and efficient biological catalysts.
4.5 Application The teacher asks students to tell the difference between catalyzed and uncatalyzed
reactions with respect to time and energy.
4.6 Assessment The teacher prepares a short written-response test in which the students will answer
in essay.
1. What is a catalyst?
2. What is the role of catalyst in chemical reaction rate?
3. Describe the three types of catalyst in chemical reactions.
4.7 Assignment Balance the following chemical equations:
1. C + SO2→ CS2 + CO
2. NO + O2→ NO2
3. Fe3O3 + C → Fe + CO
4.8 Concluding Activity
5. Remarks
6. Reflection
Prepared by:
Name: CATHERINE B. BUTRON School: BUGANG NATIONAL HIGH SCHOOL
Position/Designation: SST I Division: BOHOL
Contact Number: 09073318244 Email address:cathbermzky@gmail.com
