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The learning method of organic chemistry is as follows:
1. Structure determines properties The magic weapon of learning organic chemistry is blind.
Structure determines properties, and properties reflect that structure is particularly obvious in organic chemistry, and the number of bands is not only reflected in chemical properties, but also in physical properties. Therefore, in the study of organic chemistry, we should be good at making good use of this magic weapon. In this way, when learning organic chemistry, you can touch the void and get twice the result with half the effort.
2. Analyze the law of "broken keys" The key to correctly writing reactions.
If we can grasp the "bond breaking" law of chemical bonds in the reaction process, it will be of great help to write the reaction products correctly and the trim reaction equation.
3. Learn dialectical analysis and the ability to flexibly apply knowledge.
In the study of organic chemistry, we can deduce the properties of other congeners by understanding the properties of one or several compounds, so as to systematize and regularize the huge organic matter, which is the basic method of learning organic chemistry.
Fourth, we should do a good job of interconnection and promote the integration of knowledge.
In organic learning, in addition to mastering the properties and uses of various organic substances, it is more important to grasp the mutual transformation relationship between organic substances, clarify the connection between knowledge, form a knowledge network, and achieve the purpose of integrating knowledge.
Fifth, theory is integrated with practice to achieve the sublimation of knowledge.
Linking theory with practice is the basic principle of all cognitive activities. Organic chemistry is closely related to production and life, and we should be good at using chemical principles to analyze chemical phenomena in life, solve practical problems, and deepen our understanding of chemical principles in the process of solving problems, so as to achieve the sublimation of knowledge.
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1. Proficient in the naming rules of various organic compounds.
All kinds of organic compounds have their nomenclature and should be mastered. The name of the organic compound can be correctly written according to its formula, and the structural formula of the organic compound can be written according to the name of the organic compound. In organic compounds containing two or more functional groups, the main functional groups should be selected according to the priority of the functional groups, and then numbered according to the principle of the lowest series, and finally the name should be written.
2. Connect structure and nature, and memorize on the basis of understanding.
When learning each type of compound, it is necessary to pay attention to the structural characteristics of the functional groups of various compounds, relate the structure of the functional groups to their properties, and infer their chemical properties from the structure, and in turn infer their structure from the chemical properties. The properties of covalent bonds, induction effects, conjugation effects, organic acids and bases and some reaction laws should be well grasped, and can be used to explain experimental facts. The study of reaction mechanism can deepen the understanding of the laws of organic reactions and strengthen the understanding of the nature of reactions.
3. Summarize the properties of various compounds, find out the laws of mutual transformation between various compounds and the conditions for transformation between functional groups.
After learning a class of compounds, summarize their structure and properties to find out their commonalities and characteristics. This can be a narrative, a diagram, or a **. After learning several types of compounds, compare the various compounds to understand the laws of the mutual transformation of various compounds and the conditions for the transformation between functional groups.
It will be found that the chemical properties of one type of compound are often the preparation method of another type of compound, or after a few steps of reaction, compounds with very different properties can be linked, so as to achieve the effect of reviewing the past and learning the new, which is conducive to the consolidation of knowledge.
4. Review in a timely manner, complete homework independently, and read reference books in a targeted manner.
Doing practice questions is a continuation and extension of classroom teaching, with the aim of deepening the digestion, understanding and application of what has been learned. Therefore, you should review in time while the iron is hot, complete a certain number of practice questions independently, and solve problems in time, so that you will have good results.
5. Pay attention to experimental classes.
Organic chemistry laboratory course is an important part of organic chemistry teaching, and it is a practical teaching link. The task of the laboratory course is not only to verify, consolidate and deepen the basic theoretical knowledge learned in theoretical teaching, but more importantly, to cultivate students' experimental operation skills, comprehensive analysis and problem-solving ability. Therefore, we must attach great importance to the experimental class and do a good job in every experiment.
The chemical equations of organic chemistry are important and should be memorized.
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Is it organic?
The main reactions should be remembered.
The general formula of various hydrocarbons should be remembered.
Well, find the molecular formula.
If it is to tell you about the CO2 and H2O produced.
You know the hydrocarbon ratio of hydrocarbons, and if it is a gas mixture, use a cross.
Generally one is methane.
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The naming should be quite simple, mastering alkanes.
After the name of du, zhi others can be so on, dao I think, learning organic techniques is to grasp the official power group, grasp the nature of various functional groups, various reactions should be easier to write, then as long as you spend a little more thought, the chemical formula will be no problem. The same goes for other questions, if the functional group learns well, he won't be able to say that he can't start no matter how he takes the exam. You try it!
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Learn organic chemistry methods well as follows:
Organic chemistry mainly focuses on the content of the above five parts. Among them, "Understanding Organic Compounds" is the tool for learning organic chemistry, the middle three parts are the foundation, and the last part is "entering the era of synthetic organic polymer compounds" is the expansion. Writing and nomenclature of isomers.
The reasons why students find it difficult: incomplete writing, heavy writing, the difficult points have been understood, and the next step is to learn in combination with efficient learning methods. For the organic chemistry part, how can we learn efficiently? Start with hydrocarbons, first remember the properties of each functional group, and the chemical reaction will be fine.
Then figure out how to identify each substance, but don't get confused.
Figure out a few types of reactions. In fact, all kinds of reactions are the reactions of various functional groups, so the nature of functional groups must be well understood. Understand memory, pay attention to the structure and properties of matter, and grasp the reaction mechanism. Don't be lazy, you can also memorize it for early reading.
As an independent discipline, organic chemistry plays a very important role in human society. In the field of modern chemistry, organic chemistry is studied as a compound that contains at least one carbon atom in its chemical formula, in which carbon and hydrogen atoms form the basic building blocks of organic compounds.
The research methods of organic chemistry mainly include organic synthesis methods, organic structure analysis methods, organic physical and chemical methods, etc. Among them, organic synthesis method is the core content of organic chemistry, which includes various methods to synthesize organic compounds, such as: alkylation, substitution reaction, addition reaction, regression, redox reaction, acylation reaction, etc.
Organic chemistry is a chemistry that studies hydrocarbons and their derivatives, and its application range is wide and its importance cannot be ignored. For example, the pharmaceutical industry, the cosmetics industry, the food and fragrance industry, the paint and pigment industry, the plastics and rubber industry, etc., are all inseparable from the contribution of organic chemistry. With the progress of modern science and technology, the research content and methods of organic chemistry are also developing.
Importance of Organic Chemistry:
1. Organic chemistry is one of the foundations of modern chemistry.
The essential properties of carbon make organic chemistry have the ability to form a large number of compounds, which have a wide range of applications in many fields such as biology, materials, drugs, and energy.
2. Organic chemistry is one of the foundations of modern life science.
Most organic compounds have important biological functions in living organisms, such as proteins, nucleic acids and sugars, etc., and the study of organic chemistry provides basic support for the development of life sciences.
3. Organic chemistry is an important part of environmental science.
Organic pollutants cause serious harm to the environment and human health, and the action of organic chemistry can help to break down organic substances and then combine them into more valuable products, commonly used in the reaction of organic substances such as carboxylic acids, alcohols and aldehydes. For example, carcinogens such as benzene and dioxins. The research of organic chemistry provides a necessary scientific basis for the control of environmental pollution.
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The organic chemistry method is as follows:
1. Classification and inductive derivation of the general formula and general properties of substances:
There are many kinds of organic matter, and in the process of learning, according to the structure, nature and relationship between structure and properties of each type of organic matter, the general formula and general properties of each type of organic matter are classified and summarized.
For example, in the chapter "Derivatives of Hydrocarbons", the knowledge is based on functional groups, so when learning derivatives, we should first grasp the structural characteristics of functional groups to infer the characteristics of derivatives, and then further verify their structures by the properties, and fully understand the dialectical relationship between structure and properties.
2. Use molecular structure models to improve spatial imagination
In order to understand more vividly the arrangement of atoms in the space of organic molecules. Use the second class time to go to the laboratory to combine molecular models such as CH4, CH2=CH2, CH3CH=CH2, CH3CH2OH and so on, so as to improve your spatial imagination ability, hands-on operation ability, and creative ability.
Third, grasp the nature of the application:
For example, the structural formula of ethanol is:
The dotted lines a, b, c, and d represent bonds that are prone to breakage).
The relationship between its properties and the corresponding easily broken bonds is:
1) Follow the active metal, and break the bond at a with carboxylated breaking.
2) React with hydrogen acid (HX) and break the bond at B.
3) Oxidation to aldehyde and breaking the bonds at A and C.
(4) Intramolecular dehydration (elimination reaction) to form olefins, breaking the bonds at B and D.
5) Intermolecular dehydration (substitution reaction) to form ether, a molecule breaks the bond at A. The other molecule breaks the bond at b.
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You have to keep in mind the types of organic chemical reactions.
1. Substitution reaction.
Refers to the reaction in which some atoms or clusters of atoms in an organic molecule are replaced by other atoms or clusters.
Common substitution reactions:
halogenation of hydrocarbons (mainly alkanes and aromatic hydrocarbons);
nitrification of aromatic hydrocarbons;
the reaction of alcohol with hydrohalic acid, the reaction of the hydroxyl hydrogen atom of alcohol being replaced;
hydrolysis of esters (including oils and fats);
Hydrolysis of anhydrides, sugars, proteins. 2、
Addition reaction. It refers to the reaction in which a reagent combines with an unsaturated compound molecule to reduce the degree of unsaturation of the unsaturated compound or to generate a saturated compound.
Common addition reactions:
Olefins, alkynes, aromatic compounds, aldehydes, ketones and other substances can undergo addition reactions with hydrogen (also called hydrogenation reaction, hydrogenation or reduction reaction); addition reactions of olefins, alkynes, aromatic compounds and halogens; Alkene.
Addition reaction of alkynes with water, hydrogen halides, etc. 3、
Polymerization reactions. It refers to the reaction of small molecules with small relative molecular mass combined with each other to form a polymer with large relative molecular weight. The small molecules that participate in the polymerization reaction are called monomers, and the large molecules formed after polymerization are called polymers.
Common polymerization reactions:
Polyaddition. It refers to the reaction of small molecules with small unsaturated molecular mass combined into polymers with large relative molecular weight.
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Chemistry: Mainly to memorize some properties, write equations, etc. Textual things, you can take a look at it and memorize it.
The key to theoretical things is to understand, and if you understand it, you will be able to draw inferences from one another. For example, in a chemical equation, in order to write a correct chemical equation, you must first write the chemical formula of each reactant and product, and in order to write the correct chemical formula, you must understand the valency. If you just rely on rote memorization, it is still easy to forget when it comes to the exam, and understanding is the most important thing.
So you have to memorize more practice questions, such as multiple-choice questions, the teacher gives you some special properties to choose, so more practice can invisibly help you remember. The effect of light memory is not good. The more you practice the nature of those special substances, the more you will remember.
The big topic is reasoning, writing equations, and with a good foundation, you will not be afraid.
In short, it is a process of accumulation, the more you know, the better you learn, so memorize more and choose your own method. Good luck with your studies!
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It works well to start with methane and work your way up to the harder aspects to understand, depending on how you can make it to the end.
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Look at the people's education version of high school chemistry compulsory two elective five combined with learning to grasp the rules.
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