PraxiLabs A virtual world of science

Last Updated on August 22, 2025 by Muhamed Elmesery Have you ever dreamed of defying gravity? That dream can now become a reality with the free-fall experiment. This experiment is a great way to learn about the principles of gravity, acceleration, and the conservation of energy. It is also a really fun and interactive way to explore one of the …

Last Updated on October 19, 2025 by Muhamed Elmesery To understand and study the world of microorganisms, we need special techniques or methods that are called “Microbiology techniques”.  Microbiology techniques are the methods used for studying microbes (ex: bacteria, fungi and protest). The purpose of these techniques include microbial identification, staining, engineering, survey, culturing and manipulation. What are Microbiological Techniques? …

Last Updated on October 19, 2025 by Muhamed Elmesery Acids and Bases play a vital role in our life and all of the environment around us. When you brush your teeth with toothpaste or wash your hands with soap or take your coffee, you’ve already experienced acids and bases. In chemistry, substances are classified as acids or bases or neutral, …

Last Updated on October 19, 2025 by Muhamed Elmesery The PCR test is a method of amplifying specific DNA sequences using taq polymerase. This technique was first developed in the 1980s and has since revolutionized biology testing. Prior to PCR, only small amounts of DNA could be isolated and analyzed from samples. However, PCR allows for the amplification of minute …

Last Updated on October 19, 2025 by Muhamed Elmesery What is Recrystallization? The recrystallization definition is a process used for purifying compounds that contain impurities and these compounds are: Dissolved at solvents. Solids at room temperature. Obtained from chemical reactions or natural sources.   On the other hand, the impurities include mixtures of soluble, insoluble, and colored substances. Each  type of …