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final practice about explanation of colloid

  Here is my video link : https://www.youtube.com/watch?v=kPbZx2mriYo colloid              A.  UNDERSTANDING COLOID          Colloid is a form of a homogeneous phase-shift mixture (of a kind) to be heterogeneous. The mixture is the state between the solution and the suspension. In macroscopic colloids appear homogeneous, but in fact colloids are classified as heterogeneous mixtures, because the differences in both colloidal phase particles can still be observed and differentiated macroscopically. Like a sugar solution or a saline solution, the particles may contain more than one molecule but are not large enough to be seen with a regular microscope. The particles located within a distance of colloidal size have a very large surface area compared with the surface area of ​​larger particles of the same volume. The dispersion system is a system in which a substance is fine or dispersed...

Lesson Plan

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LESSON PLAN CHEMICAL ELEMENTS - 1 Subject: Chemistry Class / Semester: XII IPA / 1 Competency Standards   :    3. Understand the characteristics of the essential elements, their     usefulness and dangers, and their presence in nature. Basic competence              :   3.1. Identify the abundance of major elements and transitions   in nature   and products containing these elements. Indicators of Competence Achievement : 1. Identify the presence of elements present in nature, especially in Indonesia (noble gases, halogens, alkalis, alkalis, aluminum, carbon, silicon, sulfur, chrome, copper, zinc, iron, oxygen and nitrogen. 2. Identify products containing such substances . Aim : Students may , 1. Identify the presence of elements present in nature, especially in Indonesia (noble gases, halogens, alkalis, alkalis, aluminum, carbon, silicon, sulfur, chrome, copper,...