RPP CHEMISTRY CURICULUM 2013

LESSON PLAN



Subject: Chemistry
Class / Semester: XI
Subject: COLLOID
Allocation Time: 2 x 45 minutes

I. CORE COMPETENCY
1. Living and practicing the religious teachings that he embraces
2. Living and practicing honest, disciplined, responsible, caring (polite, cooperative, tolerant, peaceful) behavior, courteous, responsive and proactive and showing attitude as part of the solution to problems in interacting effectively with the social and natural environment And in placing ourselves as a reflection of the nation in the association of the world.
3. Understand, apply, analyze factual, conceptual, procedural knowledge based on his or her knowledge of science, technology, art, culture, and humanities with the insights of humanity, nationality, state and civilization on the causes of phenomena and events, and apply procedural knowledge to the field Specific studies according to his or her talents and interests to solve problems.
4. Processing, reasoning, and presenting in the realm of concrete and abstract realms related to the development of the self-study in the school independently, and able to use methods according to scientific rules

II. BASIC COMPETENCIES
1. Analyzing the role of colloids in life based on their properties.
2. Explain the system and properties of colloids and their application in daily life.

III. INDICATOR
1. Grouping colloidal types based on the dispersed and dispersed phases.
2. Describe the properties of colloids.
3. Explain the lyophob and lyophil colloids

IV. LEARNING OBJECTIVES
1. After studying this material, students are expected to be able to explain the properties of colloids.
2. Students are able to classify the properties of colloids
3. Students are able to analyze the properties of the colloids through discussion

V. TEACHING MATERIALS
Colloid is a mixture of two or more substances in which one of the phases is suspended as a large number of very small particles in the second phase. The dispersed agent and its buffer medium may be any combination of gases, liquids, or solids. Today the term colloid is used to express the size of particles as well as mixed systems. The particles of a substance are said to be colloidal in size between 10-5 cm to 10-7 cm in diameter. The so-called colloidal system is a mixture of substances in which a substance is spread evenly with colloidal sizes in another substance. As well as solutions made up of solutes and solvents, the colloidal system is also composed of two components, namely the phase
Dispersed, ie uniformly distributed substances, and dispersing phases, the medium substances in which the colloidal particles are dispersed.
1. Tyndall effect
The Tyndall effect is a form of optical properties possessed by the colloidal system. In 1869, Tyndall discovered that if a light beam is passed to the colloidal system the light beam appears. But if the same light beam is passed to a true solution, the light beam will not be visible. In short the Tyndall effect is the effect of light scattering by the colloidal system.
2. Brownian motion
The colloidal system also has kinetic properties in addition to the optical properties described above. This kinetic property can occur because it is caused by thermal movement and gravity. These two things cause the colloid system to move zigzag. This movement was first discovered by a biologist named Robert Brown who make observations on pollen by using a microscope, so called Brownian motion.
3. Dialysis
The movement of ions and small molecules through the semipermeable membrane (which colloidal passability can not pass) is called dialysis.
4. Electrophoresis
Electrophoresis is the movement of colloid particles due to the influence of electric fields. Because the colloidal particles have a charge it can move in an electric field. If the colloid is fed direct current through the electrode, then the positively charged colloid will move toward the negative electrode and arrive at the negative electrode will be neutralizing the charge and the colloid will agglomerate
5. Coagulation
The process of clumping of colloidal particles and its precipitation is called Coagulation. With the occurrence of coagulation, means dispersed substances no longer form colloids. Coagulation may occur physically such as heating, cooling and stirring or chemically such as the addition of electrolytes, mixing different colloidal loads.
6. Adsorbtion
Some colloidal systems have properties that can absorb (adsorption) on particles or ions or other compounds. Absorption on the surface is called adsorption, whereas absorption up to the inner layer is called absorption. This absorption force causes some colloidal systems to have a certain charge as the charge is absorbed.

VI. LEARNING MODEL
1. Learning method: cooperative (TTW)
2. Approach: scientific
3. Lecture and discussion

VII. Media And Learning Resources
• Media: whiteboards, markers, laptops, LCDs, LKS
• Source: a. Chemistry book 2: for SMA / MA class XI, author Ari Harnanto and Ruminten: Depdiknas
b.. Chemistry book: SMA / MA class XI, writer Shidiq Premono, Anis Wardani and Nur Hidayati: Depdiknas

VIII. LEARNING STEPS

Activities	Time	Information
preliminary • Teacher checks student attendance   • Teachers deliver learning objectives Apperception • Teacher asks students about material related to colloid. Motivation • Teachers motivate students by conveying natural phenomena related to learning materials and asking questions to guide and explore students' knowledge of the material to be learned.	5’ 4’ 3’ 4’	For example: who knows what is a solution? For example: who knows, what exactly are ice cream we often eat?
Core activities   • Teacher displays slides on colloids Exploration   • Teacher distributes LKS to students who have problems about the type and nature of the colloids   • Students are asked to read and make small notes about what they know and do not know from the problems contained in the LKS. Elaboration   • Students are asked to sit in groups   • Students are asked to discuss the results of their small notes within the group and analyze problems related to the properties of colloids.   • Students are asked to solve the problems contained in the LKS   • Students are required to produce an individual report on the formulation of knowledge about colloidal types, colloidal properties, and solving problems that have been discussed in groups Confirmation   • With the help of the students, the teacher draws the group for the presentation, then 1 selected group of students is facilitated to present the results of the group discussio   • Students from other groups are asked to respond and comment on the results of discussions of their group of friends in polite and courteous language   • One of the students from the group representative was asked to present the answer to the question and the other students were asked to respond.   • Teachers respond to student discussion results	5’ 3’ 8’ 5’ 15’ 10’ 10’ 15’ 5’ 5’ 4’	Post comments on student performance
Cover • Students are asked to make inferences of the types and properties of colloids   Reflection • Teacher asks students about the lesson that has been passed today   • Teacher has a quiz on the type and nature of colloids.   • Teacher assigns homework to students	1.       5’ 6’ 20’ 4’	The question is attached Create a colloid role table in everyday life (individual)

IX .. ASSESSMENT
Rated aspect:
- Cognitive. This assessment is derived from the practice of the LKS and the evaluation questions that are done individually.
- Affective. In accordance with the affective ratings sheet
Indicators of the development of religious attitudes, responsibility, caring, responsive, and polite.

AFFILIATED ASSESSMENT SHEET

Subjects                :............................................... ................................
Class / Semester   : .............................................. .................................
School year          :............................................... ................................
Observation time  : ............................................... ...............................

1. BT (not shown) if it does not show any real effort in completing the task
2. MT (starting to appear) if it shows there is already serious effort in completing the task but still little
3. MB (start developing) if it shows there is a serious effort in completing the task quite often
  4. Constitutional Court (entrepreneurship) if it shows a serious effort in completing the task continuously and consistently
Give a check mark (tick) on the columns according to the observation

No

student's name

Religious

Responsible

Care

Responsive

Good

BT

MT

MB

MK

BT

MT

MB

MK

BT

MT

MB

MK

BT

MT

MB

MK

BT

MT

MB

MK

1.

2.

3.

4.

5.

...

 Information:

1 BT = less             3 MB = good

2 MT = medium     4 MK = very good