What is rancidity ? The spoilage of food or oxidation of food in such a way that it becomes unpleasant smell , undesirable for consumption. Food turns rancid when the fats and oils within them get oxidized and the taste and smell of the food change due to this reason. e.g.: Oil becomes rancid due …
Corrosion Iron articles are shiny when new, but get coated with a reddish brown powder when left for some time. Corrosion process in Iron is commonly known as rusting of iron. Some other metals also get tarnished in this manner. The colour of the coating formed on copper and silver are corrosion. “When a metal …
What is Oxidation? Classical concept : “The removal of hydrogen or any other electropositive element, or the addition of oxygen or , electronegative element, is said to be the process of oxidation . “ The process of loss of one or more electrons is known as oxidation, according to the electronic concept. What is Reduction? …
What is a Displacement Reaction ? “ The one atom or a set of atoms is displaced by another atom in a molecule is called displacement Reaction .” A + BC → AC + B The above equation , when A is more reactive than B. A and B have to be either:where in C …
What is a Decomposition Reaction ? Those chemical reaction in which one reactant breaks down into two or more products is called decomposition reaction. General example of a decomposition reaction. AB → A + B Where A & B are the product molecules and AB is the reactant molecule. Types of Decomposition reaction Thermal decomposition …
We all know that we need energy to stay alive. We get this energy from the food we eat. During digestion, food is broken down into simpler substances. For example, rice, potatoes and bread contain carbohydrates. These carbohydrates are broken down to form glucose.This glucose combines with oxygen in the cells of our body and …
Do you know that respiration is an exothermic process ? Read More »
A solution of slaked lime produced by the reaction is used for whitewashing walls. Calcium hydroxide reacts slowly with the carbon dioxide in air to form a thin layer of calcium carbonate on the walls. Calcium carbonate is formed after two to three days of whitewashing and gives a shiny finish to the walls. It …
Combination Reaction Definition “Two or more reactants (elements or compounds) combine and formed a single product is known as a combination reaction.“ eg Calcium oxide reacts vigorously with water to produce slaked lime (calcium hydroxide) releasing a large amount of heat. CaO (s) + H2O (l) → Ca(OH)2 (aq) + Heat (Quick lime) (Slaked lime) …
when a magnesium ribbon is burnt in oxygen, it gets converted to magnesium oxide. This description of a chemical reaction in a sentence form is quite long. It can be written in a shorter form. The simplest way to do this is to write it in the form of a word-equation.The word-equation for the above …
WHAT IS CHEMICAL EQUATION ? HOW TO WRITE CHEMICAL EQUATION ? Read More »
