What is the most important thing in organic chemistry in high school?

Chemical Structure-Efficacy Relationship!First of all, we have to know some basic reactions, such as esterification reaction, hydroxyl and carboxyl groups meet and meet certain external conditions will undergo some regular changes in the structure, we learn these laws, and then try to use these laws to flexibly explain or synthesize some other specific substances, the essence of chemical reactions is the breaking of old bonds and the synthesis of new ones, we are to find these laws of breaking and synthesis, in fact, organic chemistry has strong laws, come on!You're just not getting used to it at first, don't worry!

It's just a study of the chemical structure over and over again!

Are you a sophomore in high school?The first three chapters of Elective 5 are important!At first, I will find it difficult, but I will do more questions, see more, and become familiar with ......The rules that the teacher talks about must be remembered, and you must memorize them very skillfully, (this is very important) so that you can respond quickly when you get the questions you haven't seen, the organic regularity is very strong, you have a good grasp of the principles in the book, and you should be able to make it according to the information prompted by the question.

Also, you have to dare to guess, even if you guess wrong at the beginning, but at least you can guess correctly in a certain functional group inside, and when you do it in the future, you will get the answer step by step.

If it's compulsory two, it's much simpler, you memorize the equations, experimental phenomena ...... in the bookThat's enough to do the question.

Hopefully, you can learn it well......

The most important thing is to grasp the properties of various functional groups and various substances, how to transform between various substances, memorize the conditions and reaction equations of some important reactions, and must grasp the reaction mechanism and what the reaction phenomenon is. You should also master some important experimental operations, etc. The connection between organic matter is great and there is a pattern to follow.

To learn well, it is not just talking, the key is to be patient, willing to study hard, where there is a will, there is a way.

Properties of functional groups and types of reactions, all kinds of substances have their own properties. Just tidy up.

Organic chemistry is a science that studies the composition and composition, synthesis and characterization, structure and properties, reaction and transformation, as well as function and mechanism of organic substances, and is one of the important disciplines for creating new substances. The new theories, new reactions and new methods of organic chemistry not only promote the development of chemistry, but also promote the intersection and penetration of this discipline with life, materials, energy, information, agriculture and environment and other related fields, and further expand the research field of organic chemistry.

Organic Chemistry. The uses of learning in life are very wide, and I can't list them all, so let's just say a small part:

1. Human clothing, food, housing and transportation are inseparable from organic matter

Natural organic substances: such as sugars, oils, proteins, oil, natural gas, natural rubber.

Wait. Synthetic organic compounds: plastics, synthetic fibers, synthetic rubber, synthetic drugs, etc.

2. The synthesis and use of organic compounds with special functions have changed people's living habits and improved the quality of human life.

3. Organic matter plays an important role in the process of maintaining life activities.

Many substances in living organisms are organic matter, such as sugars, fats, and amino acids present in cells.

Proteins and nucleic acids, for example, are organic substances.

4. Most of the drugs are organic compounds, which play an important role in helping people overcome diseases and prolong their lives.

Summary. Classmate, do you want the answer?

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Ether bonds, amino groups.

The third is the substitution reaction for C+D, and the reaction for E

4, is E+NaOH to F

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5 about it. 5 is 5 + 9 = 14 species.

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You're asking the wrong question! There is no ...... of diethylene and diethanol (diacetic acid as well as diacetaldehyde).It only appears as a group name in complex compound excavations, and is not required in high school.

Ethylene: colorless and odorless gas, denser than air, insoluble in water, soluble in organic solvents.

The molecular formula is C4H6, and the structure is simplified as CH2=CHCH=CH2It can react with chlorine water to form 1,2,3, and judge 4-tetrachlorobutane. It can be added with hydrogen and can be oxidized by potassium permanganate.

Ethylene glycol: colorless with special odor gas. Soluble in water and organic solvents.

Molecular formula C2H6O2, file filial piety structure formula (CH2OH) 2The chemical properties are the same as ethanol.

Physical and chemical properties of various organic substances, functional group reactions.

The gas is absorbed by CAO, and the volume is reduced, which is CO2, the amount of the substance, the amount of C substance in the alcohol, and the mass of grams.

Liquid alcohol + O2 = CO2 + liquid water, the volume of gas decreases after the reaction, and it can be seen that the O2 participating in the reaction is more than the volume of CO2 generated, that is, is, is.

The mass of hydrogen and oxygen in the liquid saturated polyol containing only hydroxyl group and no other functional groups is gram, and the equation n(h) 1+n(o) 16= can be listed, and n(h)=,n(o)= can be obtained by combining the above two equations according to the combustion oxygen consumption equation

The ratio of the number of C, H, and O atoms in the alcohol is 5:12:4

So the molecular formula of this alcohol is C5H12O4

Or: II, 1 (1), 5:12:4

v (co2) = ， n (co2) = n (c) =

v (CO2) +V (O2) = 5l = ,V (O2) = = ,V (O2 consumption) = = ,n (O2 consumption) = ,m (O2 consumption) =

m (h2o) + m (CO2) = + m (h2o) = = , n (h2o) = , n (h) = , then n (o) =

2) Yes, the number of hydrogen atoms in the simplest formula is saturated (3).

Solution: All volumes are measured under standard conditions, water is liquid, then calcium oxide absorbs carbon dioxide NCO= from 1 volume of oxygen to 1 volume of carbon dioxide to participate in the reaction of oxygen is: 5-(

mho= (conservation of mass) mh=

Mo = the amount of substances C, H, and O in the alcohol, respectively.

The ratio of the number of atoms of c, h, o, and in the alcohol is 5:12:4, so the molecular formula of the alcohol is c5h12o4

If any one of the hydroxyl groups of a polyol is replaced by a halogen atom, only one halide is obtained. Then its structure is simplified as: C(CH2OH)4

1. Let the three structures be x, y, and z respectively.

Calculate the unsaturation of C1134H1146: (1134*2+2-1146) 2=562

Column equations. 4x+2y=562

6x+2y+4z=1134

3x+9z=1146

Solution x=94

y=93z=96

2. B is similar to A, but the structure of B has some more C8H4 structural units than A. For example, from the c atom: (1398-1134) 8=33;For example, from the h atom: (1278-1146) 4=33

So they contain respectively

3. You can arrange this by yourself, the title has suggested that there is no benzene ring and benzene ring, the structure of alkyne bonds and alkyne bonds, the structure must be the outermost layer, you can alternately arrange the structure of and , and end with the structure.

It's a bit like a math problem, solve it yourself.

It can exist.

It can be regarded as a compound obtained by the substitution reaction of one hydroxyl group of o-diphenol and the hydroxyl group of glycolic acid into ether (similar to the formation of ether from two ethanoles).

That's what I'm looking for:

2-Hydroxyphenoxyacetic acid.