Chemical Reaction and Equation

Question 1 What is meant by chemical reaction.Give one example of Chemical reactions? Question 2 What are reactants? Question 3 What are products? Question 4 Why should magnesium ribbon be cleaned before burning in air? Chemical Reaction and Equation Chemical reactions are the processes in which new substance with new properties are formed. Only a…

Effects of oxidation Reaction in Everyday Life

Question 1 Explain the term corrosion with an example? Question 2 Explain the term rancidity? Question 3 What are anti-oxidants.Give example? Question 4 Why anti-oxidants are added to fat and oil containing foods? Question 5 Why food containing oil and fat are packed in nitrogen? Question 6 State methods to prevent the food from getting…

Oxidation and Reduction reaction

Question 1 What are oxidation reactions? Question 2 What are reduction reactions? Question 3 What are redox reactions? Question 4 What are oxidising agent? Question 5 What are reducing agent? Question 6 Give example of redox reaction? Oxidation and Reduction reaction Oxidation:Addition of oxygen to a substance or removal of hydrogen from a substance. Reduction:Addition…

Double Displacement Reaction

Question 1 What are double displacement reaction? Question 2 Give example of double displacement reaction? Question 3 What are precipitation reactions? Double Displacement Reaction Those reactions in which two compounds react by an exchange of ions to form two new compounds. For Ex: Those reactions in which an insoluble solid is formed that separates from the…

Displacement Reaction

Question 1 What are displacement reaction? Question 2 Give the reactivity series of various elements? Question 3 Give few example of displacement reaction? Displacement Reaction Those reactions in which one element takes the position of other element in a compound. or More reactive metal displaces a less reactive metal. Reactivity Series K Na Ca Mg…

Decomposition reaction

Question 1 What are decomposition reactions? Question 2 What happens when ferrous sulphate crystals are decomposed? Question 3 What is electrolysis? Question 4 What is photochemical decomposition.Give example? Decomposition Reaction Those reactions in which a compound split up into two or more simpler substances are called as decomposition reaction. They are carried out by applying…

Combination reaction

Question 1 What are combination reaction? Question 2 Give example of combination reaction? Combination Reaction Those reactions in which two or more substances combine to form a single substance. For Ex:

Chemical equation

Question 1 What is a chemical equation? Question 2 Give an example of chemical equation? Question 3 What is a balanced equation? Question 4 What is an unbalanced equation? Question 5 What are the steps of balancing the equation? Chemical Equation The method of representing a chemical reaction with the help of symbols and formula…

Characteristics of Chemical reaction

Question 1 State the characteristics of chemical reaction? Question 2 Give an example of chemical reaction characterised by evolution of gas? Question 3 Give an example of chemical reaction characterised by formation of precipitate? Question 4 Give an example of chemical reaction characterised by change in colour? Question 5 Give an example of chemical reaction characterised by change…