Lemon cells use the electrochemical reactions of two different metals (such as copper and zinc) immersed in a solution of lemon juice to create a current of electricity. The copper and zinc act as electrodes that attract and repel electrons, while the lemon juice acts as an electrolyte, allowing electrons to flow between the two …
A battery made of lemons – നാരങ്ങകൾ കൊണ്ട് നിർമ്മിച്ച ബാറ്ററി Read More »
The carbon rod in the dilute copper sulphate solution with a cell potential of 1.2 V will act as the anode in the electrolytic cell. This means that the oxidation reaction of copper ions will occur at the carbon rod, and copper will be deposited on the surface of the rod. Electrolysis Electrolysis is a …
The silver bromide will react with the sunlight and create an image on the watch glass that is not covered with black paper. The watch glass that is covered with black paper will not have an image.Photo chemical reaction will take place and will cause silver bromide to darken. The one with black paper will …
Photosynthesis is a chemical process used by plants and other organisms to convert light energy, typically from the Sun, into chemical energy that can be used to fuel the organism’s activities. The process uses water and carbon dioxide, and produces oxygen as a byproduct. Photosynthesis is the process by which plants and other photosynthetic organisms …
Photochemical Reactions – പ്രകാശരാസ പ്രവർത്തനങ്ങൾ Read More »
Endothermic reactions are reactions that absorb energy from their surroundings. An example of an endothermic reaction is the dissolving of ammonium nitrate in water. Exothermic reactions are reactions that release energy to their surroundings. An example of an exothermic reaction is the combustion of propane gas.
When potassium permanganate and heat are placed in a test tube, the solution will react in a few ways. First, the heat will cause the potassium permanganate to break down into its component parts, which are oxygen and manganese dioxide. This reaction will release heat and cause the solution to bubble. Additionally, the manganese dioxide …
Flaring up a glowing incense stick – എരിയുന്ന ചന്ദനത്തിരിയുടെ ആളിക്കത്തൽ Read More »
Thermo chemical reactions are chemical reactions that involve changes in temperature. Examples of these reactions include combustion, oxidation, and neutralization. Thermo-chemical reactions involving HCl and magnesium involve the formation of magnesium chloride (MgCl2) from the combination of the two compounds. The reaction is represented as follows: Mg + 2HCl → MgCl2 + H2 The reaction …
Physical change is a change that alters a substance’s physical properties, such as its size, shape, or state, but does not alter its chemical composition. Examples of physical changes include boiling, melting, freezing, and shredding. Chemical change is a change that results in the formation of one or more new substances. Examples of chemical changes …
Physical change and chemical change – ഭൗതിക മാറ്റവും രാസ മാറ്റവും Read More »
Balanced chemical equations are equations that show the chemical reactants and products on either side of the equation in equal amounts. In other words, the number of atoms of each element must be equal on both sides of the equation. For example, the reaction of hydrogen and oxygen to form water can be written as: …
Balanced chemical equations – സമതുലിതമായ രാസ സമവാക്യങ്ങൾ Read More »
Reactants Reactants are the substances that take part in a chemical reaction. They are the starting materials that are changed into new products with the help of a catalyst. Reactants are also known as substrates. Example: In the reaction between hydrogen and oxygen to form water, the reactants are hydrogen and oxygen. Products Products in …