How to quickly use and memorize chemical formulas

Remember the valency of the chemical formula and it's OK!Listen carefully in class, and write more after class!

Chemical equations can't be memorized!Too much !Be flexible!I'll teach you a secret:

chemical reactions) decomposition reactions).

displacement reaction) metathesis reaction).

According to the Chinese note Reverse One Reverse Remember the element symbol and valence.

Writing more makes perfect.

Just remember the number of each element and read more and remember more.

There is no skill in remembering the valencies of common elements, and it is natural to remember them when you use them regularly.

Well. Take notes in class and watch the teacher do experiments.

I've pretty much forgotten about it now, though.

Hehe. I remember that when I was about to graduate, I was very interested in chemistry.

Now there is no such class.

Alas. Friend, you still have to bring up the interest, you will remember a lot.

I'm also a junior high school student, and I've never been exposed to chemistry before, so I'm scared. But after two months, I think it's very important to have a learning mentality, to have confidence, and to be more serious. Now what you learn is the basics, so memorization is inevitable, but it is better and faster to memorize if you can understand something.

The days of the third are very long, and the mentality must be adjusted well and work together!

The secret to memorizing chemical formulas is whether you know all the elements in chemistry, and when you understand them, you will quickly memorize them.

In fact, the real secret is the way you learn.

There's no trick to memorizing basic things, so you have to work hard to memorize them.

I have all the chemical equations mentioned in chemistry books.

The key to learning chemical equations well is to memorize valency and have a good level of math!

Memorize the chemical formulas you have learned.

Do you want to memorize the chemical formula?As long as you listen carefully in class, it will be natural.

Do more questions, and you will naturally become familiar with them.

Watch the teacher do the experiment and try to remember.

If you want to memorize chemical equations quickly, you need to memorize them according to the classification of substances. Each class of substances has similar chemical properties, such as acids, bases, salts, oxides, etc., and they all have their own common properties, and by grasping the general properties of each type of substance, you can remember a lot of equations.

Chemical Equation Memory Nirvana: Memorize the main product

Example: 3Fe(OH)2 10HNO3 ==3Fe(NO3)3 No 8H2O

cl2＋2naoh ==nacl＋naclo＋h2o

2na2o2+2h2o ==4naoh+o2↑

2al+2naoh+2h2o ==2naalo2+3h2↑

The chemical equation is easy to remember: reduce the amount of memory

The chemical reaction equation is composed of three parts: reactants, products and measurement numbers, reactants are provided by information, and measurement numbers are balanced by observation method and conservation of electrons for gain and loss. Therefore, any chemical reaction equation only needs to memorize the main products.

A few chemical equations that require rote memorization, such as: Typical reactions of the same kind.

A special case reaction in the same kind of reaction.

A new reaction seen for the first time (usually typical of the same kind of reaction).

Remembering the creatures. If you remember the chemical products, you can go to the balancing by yourself, because each chemical element has its own valency, and there are also specific formulas to memorize, although the valency of some chemical elements is uncertain, but the reactants and products are available, and the balancing is not troublesome, and it will be very fast after being familiar, and it can even be seen directly.

Directly memorize the equation. If you feel that it is difficult to trim, then you can also memorize chemical equations directly, but there is also a problem, that is, there are many equations that need to be memorized, which is easy to remember, and when you encounter equations that need to be trimmed by yourself, it will be a waste of time and difficult to get it done.

Only the reactants are remembered. It is more difficult to guess the products directly according to the reactants, but it is not too big, the two reactants are still relatively simple, and the substances that generate precipitates and gases are relatively fixed, as long as you memorize those common substances.