Science Ziton

  Tear gas is a famous word that will be heard during picketing. I remember when I was attending pickets at the university I and my friends were expecting the police will use tear gas to disperse the people and we were willing to get that experience. I heard that it is unbearable when your eyes are exposed to tear gas. These days there are so many unfortunate events between police and the ordinary people in Sri Lanka due to the financial crisis of the government, oil and electricity problems, and the rising cost of living. And several times police have used tear gas to disperse people.   What is tear gas? Tear gas is said to be not a gas. It is a pressurized powder that may form a mist-like environment when it is exposed to air. It is a collection of chemicals. It says that synthetic organic halogens are used for making tear gas. The most commonly used chemical is CS gas, 2-chlorobenzalmalononitrile . Other chemicals are included   pepper spray  (OC gas),  PAVA...

  Story of litmus papers  In chemistry, we have met so many situations to consider the acidity or the basicity of solution, or any mixture. Basically in our school classes, we used litmus papers to consider the acidity or basicity of an aqueous solvent.   In the short form, I was used to remembering the color change of the litmus paper as in acids blue color change into red and in basic medium red color change into a blue. But I was really curious about the  story  of this litmus paper, showing a color change due to this acidity and basicity. In other words, acidity and basicity are represented as pH values. So litmus paper can represent color change according to different pH values. What is the pH scale? pH is a measure of acidity or basicity, denoting the potential of hydrogen. Acidic solutions have lower PH values and basics have higher PH values. “The pH scale is  logarithmic  and inversely indicates the  concentration  of  hydro...

What are these Nuclear weapons? War is a conflict between two or more political groups, countries, governments, societies, or states. There are so many historical stories about wars all around the world to the present day. Recently Russia – the Ukraine war has become the trending topic above. Along with the development of countries, militaryhaser also has become the main component of deciding the power of a country. Nowadays mainly nuclear power is the main.  A lot of countries are testing so many different kinds of nuclear weapons; North Korea is an example. In the recent ongoing war Russia- Ukraine war (started on 22 nd  February 2022), people are mostly talking about the nuclear power that Russia has got and would they use its nuclear weapons against Ukraine. A nuclear weapon can destroy a wide range of areas in several seconds. It explores and derives its destructive force from either nuclear fission or fusion. Nuclear fission happens by compressing nuclear materials and ...