化学方程式是中学化学中重要的化学用语之一,因此成为中考考查的重点与热点. 一、完成化学方程式 1.配平完成. 该类题实质上就是根据质量守恒定律用已掌握的化学方程式的配平技巧(如观察法、最小公倍数法、奇数配偶数法、待定系数法等)将化学方程式配平. Chemical equation is one of the important chemical terms in middle school chemistry. Therefore, it has become the focus and focus of the examination. First, the completion of the chemical equation 1. The trim is completed. This kind of question is based on the principle of conservation of mass and the balance of the chemical equation that has been mastered. Techniques (such as observation method, least common multiple method, odd-numbered couple method, undetermined coefficient method, etc.) equalize the chemical equation.