Chapter 1 Chemical Reactions and Equations

Do you know that respiration is an exothermic process ?

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 …

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Why a solution of slaked lime is used for whitewashing walls but after two to three days of whitewashing and gives a shiny milky finish to the walls ?

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 …

Why a solution of slaked lime is used for whitewashing walls but after two to three days of whitewashing and gives a shiny milky finish to the walls ? Read More »

WHAT IS CHEMICAL EQUATION ? HOW TO WRITE CHEMICAL EQUATION ?

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 …

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