Chemistry
Answer
A chemical reaction involves the breaking up of chemical bonds between atoms resulting in absorption of energy in the form of heat, and simultaneous formation of bonds with release of energy. These two types of energies are different from each other, i.e., there is either a surplus or a deficit of energy during the reaction.
Therefore, in a chemical reaction, energy is involved.
Related Questions
What is a chemical change? Give two examples of a chemical change?
Define exothermic and endothermic reactions. Give two examples in each case.
A metal X (used for galvanization) is immersed in the aqueous solution of a blue salt YSO4. Metal Y is deposited on the surface of the solution and a strip of metal X dissolves.
(a) Predict the metal X.
(b) What type of reaction is it?
(c) Write the word equation for this reaction and balance it.
State the main characteristics of chemical reactions. Give at least one example in each case.