TehnoPeriod Ideas

The sequence of chapters: Openstax biology: In openstax biology, chapters are arranged based on increasing biological complexity . The second chapter is about atoms, molecules, water, and carbons. It gives applied techniques about how biology is being done, for example, carbon dating, molecular interactions that take place in lifeforms and why, how it takes place, its describes all the basics at the atomic and molecular level, and also talks about environmental conditions of life forms such as pH. At the end of the chapter, it says about Carbon, and why it's important for life. Next chapter is about Biological Macromolecules (increasing complexity from atoms to long polymers), then cell structure and other chapters about functioning. Evolution is taught before the five kingdom classification. Why? Because classification is completely phylogenetically linked. You have to understand evolution, in order to understand classification. Classification is also written with linking ev...

A short cut formula like these add nothing to the understanding of concepts, also overloads children with pointless burden as they have to memorize by parroting. How its need to be solved? P° Solvent = 0.850 bar Mass of solute = 0.5g Mass of solvent = 39g Molar mass of benzene = 78g/mol P Solution = 0.845 bar Molar mass of solute (g/mol) = ? P Solution = χ Solvent P° Solvent χ Solvent = n Solvent / (n Solvent + n Solute ) Solvent: g -----> mol Conversion factor = 1 mol/ 78 g 39g * 1 mol/78 g = 39/78 mol No. of moles of solvent = 39/78 mol Solute: g -----> mole Conversion factor = 1 mol/x g 0.5g * 1 mol/x g = 0.5/x mol No. of moles of solute = 0.5/x mol Putting these values in the equation P Solution = χ Solvent P° Solvent we get following equation (((39/78)/(39/78 + 0.5/x))*0.850) -0.845 = 0 Solving it through python programming: Ans: [169.000000000000] Also why overload students with so much of large calculations (in...

Chemistry Book: NCERT Chemistry book requires a complete reinvention, with eliminating most units that are unrequired at the higher secondary level and making it more systematic with the flow of information and building new connections by using prior information. e.g. How quantum mechanical model is linked with explaining the properties of elements and molecules? And before explaining the quantum mechanical model, it's needed to explain what are model and theories. From Britannica: Scientific modeling, the generation of a physical, conceptual, or mathematical representation of a real phenomenon that is difficult to observe directly. Scientific models are  used to explain and predict the behavior of real objects  or systems and are used in a variety of scientific disciplines. The Higher secondary level is meant to know the basics first with the foundational understanding of the mechanism of concepts in detail. It should be relevant to students day to day life to know the...

Comparative analysis of Openstax chemistry book and our NCERT chemistry book read by largest populated country Review of chapter Atoms, Molecules and Ions of Openstax and Structure of Atom in NCERT Openstax starts the chapter with a picture mass spectral analysis. Mass spectrometry is a very important technique to study atomic properties. To make you more curious it talks about the diagnosis of diseases through analysis of molecules in an exhaled breath. But ncert book image is this: NO IMAGE Let's come down to the introduction: NCERT Chemistry: The existence of atoms has been proposed since the time of early Indian and Greek philosophers (400 B.C.) who were of the view that atoms are the fundamental building blocks of matter. According to them, the continued subdivisions of matter would ultimately yield atoms which would not be further divisible. The word ‘atom’ has been derived from the Greek word ‘a-tomio’ which means ‘uncut-able’ or ‘non-divisible’. Th...