what Happened During the chemical reaction * it is mcq type question.
Answers
Answer:
Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.
Answer:
During the chemical reaction following things occurs:
(i) Reactant reacts with each other to form a product which is either a chemical element or a chemical compound i.e. a new substance is formed.
(ii) Change in temperature due to the formation of energy (heat, light, sound, etc.). Energy is either taken (endothermic) or given out (exothermic)
(iii) Evolution of gas.
(iv)Change in the state.
(v)Change in colour.
(vi)Formation of the precipitate.
First one is the most important.