Dear children,
 Welcome back to school.
My English lessons  are ready to arrive. 🙂🚌

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( for understanding intermolecular force)

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There are two kinds of forces, or attractions, that operate in a molecule— intramolecular  and  intermolecular . Let's try to understand this difference through the following example. Figure of towels sewn and Velcroed representing bonds between hydrogen and chlorine atoms We have six towels—three are purple in color, labeled  hydrogen  and three are pink in color, labeled  chlorine . We are given a sewing needle and black thread to sew one hydrogen towel to one chlorine towel. After sewing, we now have three pairs of towels: hydrogen sewed to chlorine. The next step is to attach these three pairs of towels to each other. For this we use Velcro as shown above. So, the result of this exercise is that we have six towels attached to each other through thread and Velcro. Now if I ask you to pull this assembly from both ends, what do you think will happen? The Velcro junctions will fall apart while the sewed junctions will stay as is. The attachment created by Velcro...
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Plant and Animal Tissues Cell is the structural and functional unit of life. All living organisms, plants and animals are made up of cells. It consists of protoplasm the living substance. Cells organise to form tissues and Tissues organise to form organs and organ form organ systems. A group of cells, which are similar in structure, and perform a specific function , form a tissue. Kinds of Tissues: Plant and Animal Tissues https://youtu.be/8CJAJxDyOXk  
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