Diffusion The tendency of solid, liquid, or gas to spread spontaneously and uniformly in any medium is called diffusion. In the diffusion process, a solid, liquid, or gas moves spontaneously from a place of higher concentration to a lower concentration. Remember, what happens if you leave a perfume bottle with its lid open in the … Read more
What is diffusion? Diffusion is the random movement of molecules from an area of high concentration to an area of low concentration. It happens naturally due to thermal energy, without any outside force. What are the different types of diffusion? There are three main types of diffusion: What factors affect the rate of diffusion? The … Read more
What is periodicity? Periodicity basically means something that happens again and again at regular intervals. You can see periodicity in different fields: What causes the periodicity in the periodic table? The magic behind the periodicity in the periodic table lies in the arrangement of electrons around the atom’s nucleus, specifically the valence electrons. These valence … Read more
Atom Definition An atom is the basic building block of matter. It is the smallest unit into which matter can be divided without losing its identity as a chemical element. What is atom? An atom is the fundamental building block of everything around you, from the air you breathe to the chair you’re sitting on. … Read more
In a laboratory, safety is crucial, requiring the minimization of exposure to chemicals, flames, and other hazards. Dresses are not suitable attire for a laboratory due to exposed arms and legs. Here are some additional tips for dressing safely in a laboratory:
What is combustible matter? The combustible matter is any material that can be easily ignited and burned. It is a broad term that includes solids, liquids, and gases. Some common examples of combustible matter include: Solids: Wood, paper, cloth, plastics, rubber, coal, and charcoal. Liquids: Gasoline, kerosene, diesel fuel, alcohol, and paint thinner. Gases: Hydrogen, methane, propane, butane, and natural gas. Combustible matter can … Read more
The Lewis diagram above shows ethene (C2H4), which has two carbon-to-carbon bonds. The strength of the two carbon-to-carbon bonds in ethene is equal. This is because both carbon atoms in ethene are sp2 hybridized, which means that they each have three sp2 hybrid orbitals and one unhybridized p orbital. The sp2 hybrid orbitals are used … Read more
Why is it forbidden to preserve foods with formalin? Formalin is a solution of formaldehyde in water. It is a colorless, pungent liquid with a sharp odor. Formalin is a common fixative, which means that it is used to preserve tissues and cells. It works by cross-linking proteins, which stabilizes the tissue architecture. However, formalin … Read more