Short Answer Questions: Chemical Reactions & Equations

Short Answer Questions: Chemical Reactions & Equations Short Answer Questions Q1: What is a Chemical Reaction? Ans: A chemical reaction refers to the process that leads to the transformation of one set of chemical substances into another. It involves the making or breaking of bonds between atoms, ions, or molecules. During a chemical reaction, reactants are transformed into products. For instance, when iron rusts, the iron (reactant) reacts with oxygen to form iron oxide (product). Q2: What is a balanced chemical equation? Why is it necessary to balance a chemical equation? Ans: A balanced chemical equation is one in which the number of atoms involved on the reactant side is equal to the number of atoms on the product side . This is based on the law of conservation of mass which states that matter cannot be created or destroyed. For example, the balanced chemical equation for the reaction between nitrogen and hydrogen to form ammonia is N2 + 3H2 → 2NH3. Balancing a chemical equation is …