Heat Transfer by ConvectionThis mode of heat transfer is seen in liquids and gases in which the molecules are less densely packed and are free to move. Thus, convection is the primary mode of heat transfer in fluids.Let us see the following example and l…

Sericulture: The Process of Silk ProductionRearing of silkworms for silk production is called sericulture.It is a very complex and lengthy process. The healthiest moths are chosen for breeding and laying the eggs. The first step involves washing the silk…

Which Animals Does Wool Come FromWOOL Wool is an animal fibre. It is present as a thick coat of hair on the body of certain animals and keeps them warm. Air gets trapped in the spaces between the hair and does not allow the body heat to escape. That is w…

Heat Transfer by ConductionWe have seen in earlier examples that metal objects heat up when they come in contact with hot solids or liquids. For example, a stainless steel spoon becomes hot when left in a hot liquid. How do you think this happens? The he…

What factors affect the rate of a reaction? Factors Affecting the Rate of Reaction: The rate of a chemical reaction can be altered by changing the reacting conditions. There are five factors that affect the rate of a reaction:Total surface area of a soli…

What is the rate of the reaction?Rate of reaction measures the speed at which the reactants are converted to the products in a chemical reaction. For a reaction that occurs rapidly, the rate of reaction is high. Conversely, for a reaction that occurs sl…

What is the collision theory in chemistry? According to the kinetic theory of matter, particles of matter are in continuous motion and constantly in collision with each other.For a reaction to occur, the particles of the reactants (atoms, molecules or i…

From Sheep to Wool – Step by Step Process for Wool ProductionThe different processes involved in wool production are shearing, scouring, grading, dyeing, and drying.Fig. Weaving of fleece into yarnShearing The process of removal of the fleece from an an…

What is a redox reaction?Many processes that occur around us are redox reactions. These include combustion, rusting, photosynthesis, respiration and decomposition.Redox reactions are chemical reactions involving oxidation and reduction occurring simultan…

How do you make detergent? What is detergent? Any cleaning agent that is not a soap is a detergent. Detergents are usually made from synthetic resources such as petroleum fractions.They were developed during the Second World War in response to a shortag…