xi part 2 asam basa english

LESSON PLAN

Level of Study : Senior High School

Subject : Chemistry

Topic : Acid Base Solution

Subtopic : The Properties of Acid-Base Solution and Degree of Acidity (pH)

Grade/Semester : XI/II

Time Allocation : 3x45 minutes

I. STANDART COMPETENCE :

Understanding the properties of acid base solution, the measurement method and its

application.

II. BASIC COMPETENCE :

Describing the acid base theories by determining the solution’s properties and calculating

the solution’s pH.

III. INDICATOR

A. Cognitive

1. Product

Identifying the properties of acid-base solution with various indicators.

Predicting the pH of unknown electrolyte solution based on observation result of

the color changing trajectory of various acid-base solution.

2. Process (Study skill, Learning strategies)

Conduct experiment to identify acid and base with various indicators through

group work in the laboratory.

Summarizing the properties of acid base solution

Conduct experiment to predict the pH of unknown electrolyte solution based on

observation result of the color changing trajectory of various acid-base solution

through group work in the laboratory.

Communicate their discussion about the properties of acid-base solution and

degree of acidity (pH) based on their experiment result

B. Affective

1. Character Behaviour

1. Accurate

2. Responsibility

3. Honest

4. Can be trusted

5. Open minded and listen friend’s opinion

6. Help friend that needed

2. Social Skill

1. Cooperate well

2. Be good leader in experiment group

3. Be a good listener

4. Asking skill

5. Giving opinion

6. Telling information

IV. LEARNING OBJECTIVES

A. Cognitive

1. Product

Student can identify the properties of acid-base solution with various indicators

exactly.

Student can predict the pH of unknown electrolyte solution based on observation

result of the color changing trajectory of various acid-base solution exactly.

2. Process

Student can conduct experiment to identify acid and base with various indicators

through group work in the laboratory exactly.

Student can summarize the properties of acid base solution exactly

Student can conduct experiment to predict the pH of unknown electrolyte solution

based on observation result of the color changing trajectory of various acid-base

solution through group work in the laboratory exactly.

Student can communicate their discussion about the properties of acid-base solution

and degree of acidity (pH) based on their experiment exactly

B. Affective


Participating in Teaching and Learning Process, minimal they are valued in making

progress in showing character accurate, responsibility, honest, can be trusted, open

minded and listen friend’s opinion, also help friend that needed

2. Social Skill

Involved in Teaching and Learning Process, student marked advance in social skills :

1. Cooperate



4. Asking skill

5. Giving opinion


V. LEARNING MATERIAL

Determining the pH by using some indicators.

The simple indicators like litmus paper or fenolftalein only give the description

about the properties of solution (acid, base, or neutral), but it doesn’t show the pH.

Litmus paper for example, gives red colour in the solution that have pH untill 5,5. It

means that litmus paper can’t differ the solution that have pH 1 from 2 or 2 from 3, etc.

Because of the pH trayek of each indicators, so the pH of solution can be determined by

the combination of some indicators.

Example : A blue solution if it’s dropped by blue bromtymol indicator (6,0-7,6) and

colorless by using fenolftalein indicators (8,3-10,0). What is the pH of its

solution?

Answer : If it is used Blue Bromthymole indicator and produce blue colour, it means that

the pH of solution more than 7,6. If it is used phenolphtalein indicator and

colorless, it means that the pH less than 8,3.

So, the pH of solution between 7,6-8,3.

7,6 < pH < 8,3

VI. LEARNINGMODEL :

Learning model : Cooperative

Type : Student Teams Achievement Division (STAD)

Learning method : Experiment, discussion, presentation and question and answer

VII. TOPIC : Acid Base Solution

SUBTOPIC : The Properties of Acid-Base Solution and Degree of Acidity (pH)

VIII. LEARNING ACTIVITY

A. Introduction

Phase 1 : Present Goals and Set

Exploration

1. Teacher relate the topic by giving some question about acid base theory

2. Teacher motivate the student with showing some picture about various indicator to

identify the properties of acid base solution.

3. Teacher explain the learning objectives to students

B. Main Activity

Phase 2 : Present Information

Elaboration

4. Teacher explain outline of matter that will be studied.

5. Teacher inform about learning model that will be used.

Phase 3 : Organize Student into learning team

6. Teacher divided students into some groups. Each group consist of three students

heterogeneously.

7. Teacher conditioning students to gather with their groups.

8. Teacher distribute worksheet to each student.

Phase 4 : Assist teamwork and study

9. Teacher ask student to start the experiment

10. Teacher walk around and monitoring the activities of students during experiment,

emphasize that responsibility, cooperate well, be good leader in experiment group is

required to students

11. Teacher guide students in finishing worksheet based on experiment result

accurately, emphasize honest, can be trusted, and help friend that needed is required

to students.

Phase 5 : Test over materials

12. Teacher ask student to present the result of their discussion in front of the class and

other students become good listener, emphasize that open minded and listen

friend’s opinion to student during discussion.

13. Teacher gives opportunity student to ask (give question).

14. Teacher gives opportunity student to express their opinion about answer of other

friend.

C. Closure

Phase 6: Provide recognition

15. Teacher gives reward for the best group, great group and super group.

Confirmation

16. Teacher give feedback to the learning material

17. Teacher guide students to make summary or conclusion of this matter

18. Teacher end the learning process.

IX. LEARNING SOURCE

1. Student handbook

2. Worksheet

3. Material and Equipment

Materials :

Universal indicators paper

Blue litmus paper

Red litmus paper

HCI 0,1 M solution

HNO3 0.1 M solution

CH3COOH 0,1 M solution

KOH 0,1 M solution

NaOH 0,1 M solution

NH4OH 0,1 M solution

Equipments :

Pipettes

Tes tubes

X. ASSESMENT

1. Product

2. Process


4. Social skill

Gresik, 17 July 2011

Known,

Head Master of SMAN 1 Manyar Chemistry Teacher

Drs. H. M. Syafaul Anam, MM

NIP. 196502071988031012 NIP.

Experimental WORKSHEET

Name : .............................................

Class : .............................................

Absent Number : ..........................................

I. Standart Competence :

Understanding the properties of acid base solution, the measurement method and its

application

II. Basic Competence :

Describing the acid base theories by determining the solution’s properties and calculating

the solution’s pH.

III. Indicator :

1. Identifying the properties of acid-base solution with various indicators.

2. Predicting the pH of unknown electrolyte solution based on observation result of the

color changing trajectory of various acid-base solution

Identify the properties of this acid-base solution and predict its pH !!

Materials :

Universal indicators paper

Blue litmus paper

Red litmus paper

HCI 0,1 M solution

HNO3 0.1 M solution

CH3COOH 0,1 M solution

KOH 0,1 M solution

NaOH 0,1 M solution

NH4OH 0,1 M solution

Equipments :

Pipettes

Tes tubes

Procedure :

1. Take 1 ml of each solutions that will be

identified and measured the pH than put each solution into test tubes. After that, take each

solution using pipettes about 5 drops and put into plat. Give symbol or label in every hole of

plat of each solutions.

2. Take the cutting universal indicators paper

and dip the side into each solution in plat. Look at the changing colour.

3. Match the colour of universal indicators paper

from activity 2 with standard colours are there in the pack of universal indicators paper than

read its pH scale. Repeat the experiment by using blue litmus paper and red litmus paper.

Observe the changing colour of blue litmus paper.

Observation Result :

Complete the following table of observation data!

No.Acid/Base Solution

pHBlue litmus

paperRed litmus

paperPropertis of solution

1. HCl 0,1 M2. HNO3 0,1 M3. CH3COOH 0,1 M4. KOH 0,1 M5. NaOH 0,1 M6. NH4OH 0,1 M

Analyze Data

1. Based on the value of pH, determine the acid/ base, strong/ weak!

2. Based on the changing colour of blue litmus paper determine the acid/ base!

3. Determine the concentration of H+ in solution 1 until 3 and the concentration of OH- in

solution 4 until 6!

Conclusion

Make conclusion of this experiment!

Answer :

.........................................................................................................................................................

.........................................................................................................................................................

.........................................................................................................................................................

.........................................................................................................................................................

---- Good Luck ----

TABLE SPECIFICATION ASSESMENT SHEET

Learning SourceAsessment Sheet and

item testKey of Assesment

Sheet and item test

1. Product1. Student can identify the properties of

acid-base solution with various

indicators exactly.

2. Student can predict the pH of

unknown electrolyte solution based

on observation result of the color

changing trajectory of various acid-

base solution exactly.

Product assessment

sheet (AS 1)

Key of assessment

sheet product.

2. Process1. Student can conduct experiment to

identify acid and base with various

indicators through group work in the

laboratory exactly.

2. Student can summarize the properties

of acid base solution exactly

3. Student can conduct experiment to

predict the pH of unknown electrolyte

solution based on observation result

of the color changing trajectory of

various acid-base solution through

group work in the laboratory exactly.

4. Student can communicate their

discussion about the properties of

acid-base solution and degree of

acidity (pH) based on their

Process assessment

Sheet 2 (AS 2)

The assessment

are trusted to

Teacher

experiment resultexactly


Participating in Teaching and Learning

Process, minimal they are valued in

making progress in showing character:

1. Accurate

2. Responsibility

3. Honest

4. Can be trusted

5. Open minded and listen friend’s

opinion


Character assessment

sheet (AS 3)

At least get an

assessment

indicates the

progress and

entrusted to the

judgment

Assessors/Teachers

4. Social Skill

Involved in Teaching and Learning

Process, student marked advance in

social skills :

1. Cooperate



4. Asking skill

5. Giving opinion


Social skill Assesment

Sheet (AS 4)

At least get an

assessment

indicates the

progress and

entrusted to the

judgment

Assessors/Teachers

Assesment Sheet 1 (AS 1)

PRODUCT ASSESMENT SHEET

Student Name: Class: Date:

Answer this question based on your experiment result!

1. Based on the value of pH, determine the acid/ base, strong/ weak!

2. Based on the changing colour of blue litmus paper determine the acid/ base!

3. Determine the concentration of H+ in solution 1 until 3 and the concentration of OH- in

solution 4 until 6!


Chemistry Teacher

( )


PROCESS ASSESMENT SHEET


No. Performance Task Maximum Score Score

1. Conduct experiment to identify acid

and base with various indicators

through group work in the

laboratory.

25

2. Summarizing the properties of acid

base solution

30

3. Conduct experiment to predict the

pH of unknown electrolyte solution

based on observation result of the

color changing trajectory of various

acid-base solution through group

work in the laboratory.

25

4. Communicate their discussion about

the properties of acid-base solution

and degree of acidity (pH) based on

their experiment result

20

Total Score 100


Chemistry Teacher

( )


CHARACTER BEHAVIOURAL ASSESMENT SHEET


Guidance :

For each of the following character behavior, give a character assessment of student behavior using the following scale:

D = Requires improvements C = Indicates progress B = SatisfactoryA = Very Satisfactory

Format Observation of Character Behavioural

No.Details of Task

performanceD C B A

1. Accurate

2. responsibility

3. Honest

4. Can be trusted

5. Open minded and listen

friend’s opinion



Chemistry Teacher

( )


SOCIAL SKILL ASSESMENT SHEET


Guidance :

For each of the following character behavior, give a character assessment of student behavior using the following scale:

D = Requires improvements C = Indicates progress B = satisfactoryA = Very Satisfactory

Format Observation of Social Skill

No.Details of Task

performanceD C B A

1. Cooperate

2.Be good leader in

experiment group


4. Asking skill

5. Giving opinion



Chemistry Teacher

( )

xi part 2 asam basa english

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