CBSE Class Notes Online – Classnotes123
CBSE Class Notes, Worksheets, Question Answers, Diagrams , Definitions , Diffrences, Science Facts Online – Classnotes123
Corrosion Corrosion is the type of Oxidation reaction in everyday life in which the open surface of the metals are slowly eaten away by the reaction of air, water and …
Define Corrosion class 10 Read MoreQuestion 1 one of the following does not happen during a chemical reaction. This is Breaking of old chemical bonds and formation of new chemical bonds Formation of new substances …
CHAPTER 1 CHEMICAL REACTIONS AND EQUATIONS MCQ Read More
We apply Paint on Iron articles to prevent it from corrosion. Corrosion is a type of Oxidation reaction in everyday life due to which open surfaces of the metals like …
Why do we apply Paint on Iron articles? Read MoreWhat is Decomposition Reaction and Combination Reaction? In a decomposition reaction, a single reactant breaks down to form two or more products. On the other hand in combination reactions two …
Why are decomposition reactions called the opposite of combination reactions? Write an equation for this reaction. Read More
The reaction which is accompanied by the formation of an insoluble solid mass which is also called as precipitate is known as precipitation reaction. For example When Barium Chloride solution …
What do you mean by a precipitation reaction? Explain by giving examples. Read More
Exothermic reactions Exothermic reactions are the type of reaction in which heat is evolved or the reaction in which heat is released along with the formation of products are called …
What does one mean by exothermic and endothermic reactions? Give examples. Read More
The process of making the numbers of different types of atoms equal on both sides of an equation is called balancing of equations. When the Numbers of atoms of different …
What is a Balanced Chemical Equation? Why should chemical equations be balanced? Read More
Magnesium ribbon be cleaned before burning in air for the following reason The magnesium ribbon which we usually use has a coating of magnesium oxide. Magnesium ribbon reacts with oxygen …
Why should a magnesium ribbon be cleaned before burning in air? Read More