Sprint to coach famous teachers to review how candidates learn chemistry efficiently.
1, master the main knowledge
The arrangement of main knowledge and the construction of knowledge network have usually been completed in one round of review. Now I have to check my mistakes and omissions. For example, ionic equation, electron, and places omitted from organic chemistry equations (such as water in esterification products). ), misspelled words, confused experimental operations, etc. Attention should be paid to chemical terms such as chemical equations.
Step 2 choose a theme
Time in senior three is precious, so you don't have to do a particularly complicated topic with a lot of words. Pay attention to the chart problem. Think more after practice: what is the intention of the question? What knowledge points have you gained? What is the angle of the proposition? What thinking method is used? Where is it easy to get stuck? What is easy to ignore when answering questions? Wait a minute. Through such reflection, on the one hand, we can check our own shortcomings, on the other hand, we can effectively improve our comprehensive ability. Pay attention to the limited training of multiple choice questions.
3, master the way of thinking
There are many ways of thinking in chemistry, the most important ones are conservative thinking and analogical thinking. Flexible use of "conservative thinking" can solve problems quickly and effectively. Such as judging whether ionic equation is right or wrong, and calculating the ion concentration in the solution. The conservation of charge is often used, and the topic of salt water solution is often used in the conservation of matter and atom. And "analogical thinking" is simply to understand "compared with who? Than what? What are the regularity and particularity of the content of comparison? " There are usually two kinds: one is analogy according to the periodic law of elements; The other is to tell you that you are similar to some knowledge you have learned according to the given information, and ask for a reasonable analogy to find a combination of the two to answer the question. This type of question can reflect students' ability to obtain and process information.
4. Pay attention to "cold spots"
"Cold spot" refers to the content clearly required in the examination syllabus, but basically not involved in the examination questions in the past three years. Such as: drawing experimental instrument device diagram, synthetic ammonia industry and sulfuric acid industry, properties and application of colloid, influence of temperature on solubility and solubility curve, principle and application of galvanic cell, etc.