How to memorize high school chemistry equations, is there any rule, who will tell me

The "cleverness" of memorizing equations lies in the fact that you don't "memorize":

The definition of chemistry is the study of the composition, structure, properties and changes of matter.

The chemical equation is the most intuitive and comprehensive embodiment of the knowledge points of chemistry.

Studying chemistry is, in a sense, learning chemical equations.

Therefore, you should not "memorize" the equation in isolation, but look at the composition of the substance, the change of valence, the relationship between different structures, the relationship between the quantity of matter, the chemical principle embodied, and so on. This is called memorization based on understanding.

I'm from Jiangsu, a high school teacher, hehe......

Remember the commonalities, and then remember some special cases.

High school chemistry is nothing more than those categories, ionic reactions, redox reactions, divided into small details is acid-base neutralization, displacement reactions and the like, in fact, these are divided into categories will find characteristics, all reactions are required to be reasonable, the college entrance examination will also require you to create chemical reaction equations, this is from your back, such as ionic reactions, as long as you write a reasonable product and the left and right sides of the charge is equal, OK. Redox is simpler. As long as the product and reactant are in line with the oxidation of the oxidant is greater than the oxidation of the oxidation product, and whether the reducing agent is greater than the reducibility of the reducing product.

Of course, there are exceptions) So as long as you memorize the oxidation order table and the reduction order table, the redox equation will be solved, such as the activity order of the elemental matter f o cl br i s p n c h

To memorize high school chemistry equations, you need to start from the following aspects:

1. Master the essentials of writing chemical equations.

Write the reactant on the left, write the generation on the right, write the chemical formula, the coefficient to balance, the middle with an equal sign, the condition should be clear, the precipitate gas is generated, and the arrow is indicated.

2. Categorize memory.

According to the knowledge series or reaction type or substance category memory, the scattered knowledge is summarized into a knowledge network with rules to follow and key substances as the center.

3. Memory of experimental phenomena.

Chemical equations are boring and difficult to remember, how to make the learning of chemical terms sound and interesting, and can be linked to the memory of experimental phenomena. As.

Sulfur burns in oxygen, memory associations:

Burning sulfur into oxygen, burning becomes vigorous, the flame is blue and purple, beautiful and beautiful, and produces gas, which is really enough to "choke".

Phosphorus burns in oxygen, memory associations:

The red phosphorus burns, but it is really lively, and the smoke is billowing and bright like a "light bulb".

Learn to memorize a little, don't be in a hurry, take your time, you can take the evening self-study time to memorize, or write the formula you can't remember on a post-it note, stick it on the table, and look at it every day, and you will naturally be very familiar.

Rote memorization is also a method, but it also varies from person to person, and you can think of it as something you like or a connection to something. Memory is a method!!

Structural diagram. For example, a figure like an iron triangle.

Don't memorize by rote, rote equations are the stupidest way, it's enough to memorize reactants, reaction conditions, products.

As for the trim, there is no need to remember it at all. When you need to use it, write down the equation first, and then slowly trim it.

The key to remembering reactions and products is to understand the properties of matter, and when you understand the properties of this substance, you will easily remember the intertransformation of matter.

Classify first.,See which type of reaction it's on.,Then memorize it.。。。

Dear, one step late, there is much neglect!!

There's no need for a simple way or anything. Because most of the time (especially some formal exams, such as the college entrance examination), the exam does not test the equations in the book.

There are rules. The law of conservation (the only universal principle).

The first point is the law of conservation of electrons (usually used for redox reactions and electrode reactions).

The second point is the law of conservation of charge (for ionic reactions, which is usually tested in the exam, and the electrode equation in electrochemistry).

The third point is the law of conservation of mass (usually used when checking and when adding unknown ingredients).

1. Reaction to redox and electrode.

The reactants and products are obtained by using the known conditions and general understanding or laws, and the oxidants and reducing agents, as well as the oxidation products and reduction products, are written on both sides of the equal sign. The coefficients of oxidants and reducing agents, as well as the coefficients of oxidation products and reduction products, are deduced by using the change of valency (i.e., the transfer of electrons) to increase the sum of valencies that increase is equal to the sum of decreasing valences. It is usually done by simply leveling one segment and then deducing the other end.

2. After the oxidation product and the reduction product are balanced, use the charge conservation to check whether the total charge at both ends of the equation is equal, and then add the known substance or the ungiven substance according to the needs and conditions, for example, the left end has an extra positive charge, consider adding a positive charge at the right end (in most cases hydrogen ions) or a negative charge at the left end (most of them are hydroxide), add and add the corresponding product at the other end, This is usually water (in most cases, water) or some precipitated or uncharged substances such as gases.

3. Use the law of conservation of mass (that is, the atoms at both ends of the equation should be conserved, and it is better to choose some typical atoms, such as hydrogen atoms, oxygen atoms or chlorine atoms.

If it is not redox, then use the second and third directly, if it is an organic equation, directly use the third (sometimes the first and second), and if it is an electrode reaction, use the first and second terms. If it is a non-ionic reaction, use one or three.

There are also some methods that are used in essence, such as relational methods.

Finish!!! Laugh and !!

Memorize by response category.

Neutralization and substitution. Redox metathesis.

There is no special way, just to see more, understand more, and draw inferences. If you read more, you will reason.

1.It is best to understand the memorization, study the basic chemical formulas in the book clearly, and write them down.

2.Able to memorize the list of chemical elements. Remember what price point these elements are. Generally, the teacher will give you a slip to remember the price of chemical elements. With these in mind, you will know that it is not easy to make mistakes when writing chemical formulas.

3.Studying chemistry is also related to our common sense of life, so let's think about it.

First of all, we must remember: in the melt water of potassium and sodium ammonia salt, all nitric acid is melted, and there are five positions of melting alkali, potassium, sodium, calcium and ammonia!

Then distinguish the anion and ion! After the electronic formula and the number of outermost electrons are figured out, write the chemical equation and solve it!

Divide into basic forms, synthesize, decompose, replace, meta-decompose, and then summarize the chemical formulas in the book and practice them every day.

Just remember the reactants and products first, and then the coefficients.

After learning the conservation of electric charge, the rest of the patience is solved!