High School Chemistry Metals Summary, High School Chemistry Detailed Knowledge Points Summary

Material: Iron Series:

Pig iron: Fe-C alloy with a C content of more than 4% is characterized by being hard, also known as cast iron, and is the main component of manhole covers.

Ordinary steel: Fe-C alloy with C content and 4% is characterized by hard and high toughness The main component of the steel door (囧丁B).

Stainless steel: Fe-Cr-Ni and other metal alloys (Ni accounts for about 18%, so it is expensive) is characterized by hard, high toughness and corrosion resistance The main component of kitchen knives.

Wrought iron: Fe-C alloy with less C content is characterized by high toughness I don't know what it is.

Pure iron: It is pure iron, which is characterized by corrosion resistance (ah!! Indeed, it is corrosion-resistant, pure iron has no electrochemical corrosion compared to ordinary ferroalloys, and of course it is nothing compared to BT molecules such as stainless steel).

Copper series: brass: Cu-ZN alloy is characterized by yellow (囧丁二) Comparable to the color of ** Often used to pretend to be gold (sweat) Cracked with hydrochloric acid or quantity density (hot knowledge!!

The teacher loves this test!! It's like they've just been tricked into making us mad by this "fool's gold" (Brass's nickname!!

Bronze: Cu-Sn alloy is characterized by cyan (re-sweating).

Pure copper: It is pure copper and is characterized by a purplish red color (I still can't figure out why the textbook says that) and strong electrical conductivity (in other words, low resistance) (not as strong as ag).

Aluminium series: duralumin: Al-MG alloy is characterized by being a hard and light main component of aircraft and screen frames.

Stupid Donkey (Wrong!) It's pure aluminum): It's a stupid donkey (really wrong!). It is pure aluminum) and is characterized by strong electrical conductivity (not as strong as cu).

Extra! Superconductor series.

Lanthanum-barium-copper oxide:LA-ba-cu-o alloy is characterized by low-temperature superconductivity (no resistance!!

Barium-yttrium-copper oxide: Ba-y-cu-o alloy Same as above.

Regardless of whether it is a new course standard or an old course standard or other course standards, the nature of metal materials is just like that, the same gradient, and will not be different because of the difference between the new course standard and the old course standard. Take a good look at the chapter on metals in your textbook, how oxidation, outermost electrons, etc. change are clearly written in the book.

In high school chemistry, only iron should be in the subgroup, and the rest of the metals should be pushed according to the periodic law.

See My Space for details.

First, the experimental part.

Seven Principles in the Operation of Chemistry Experiments in Middle School:

1.The "bottom-up" principle. Taking the CL2 laboratory method as an example, the assembly of the generator is as follows: put the iron frame table, set the alcohol lamp, fix the iron ring according to the position of the alcohol lamp, fix the asbestos net, and fix the round-bottom flask.

2.The "left-to-right" principle. The assembly complex should follow the order from left to right. The assembly sequence of the above device is: generator device, gas collector cylinder, beaker.

3.The principle of "plugging" first and then "determining". The stopper with the catheter should be plugged before the flask is fixed to avoid the flask being fixed and the plug is not tight due to unsuitable force or damage to the instrument due to excessive force.

4.The principle of "solids first". In the example above, the reagent Mno2 in the flask should be loaded before the flask is fixed to avoid damaging the flask when the solids are placed. In summary, solid reagents should be added to the appropriate container before fixation.

5.The principle of "liquid after adding". The liquid drug is added after the flask is fixed. As in the example above, concentrated hydrochloric acid should be added slowly in the separating funnel after the flask has been fixed.

6.A priori airtightness (loading into the mouth.

Fundamentals of Chemistry in Middle School.

Say to new high school classmates.

A fragmented summary of middle school knowledge points (thanks to Bihai Turning Waves).

Organize all the knowledge points of high school chemistry (chaotic and miscellaneous).

Special topics: learning methods and knowledge points.

Several error-prone knowledge points in high school.

Summary of inorganics in high school chemistry.

Summarizing the physical properties of common substances.

Some rules and summaries of chemistry in middle school.

Part I: Part II:

Part III: Part IV:

Part V: Part VI:

College Entrance Examination Chemical Memory Compilation.

52 cases of chemical laws and particulars.

Other problems that are difficult to understand in high school chemistry concepts.

Chemistry competition test question proposition ideas, problem solving ideas and test question analysis.

The main ideas in chemistry.

Use "criss-cross" skillfully

Seven strategies to make a leap forward in chemistry performance.

High School Chemistry Contest Reference Book.

Let's talk about a few basic strategies for learning organic chemistry.

People talk about chemistry learning.

Chemistry learning methods for junior high school students.

Talking about the learning experience of high school chemistry (written by a student).

Exchange of learning experiences in chemistry in secondary schools.

Peking University and Tsinghua University college entrance examination champions talk about chemistry learning.

Chemistry and philosophy --- in-depth learning.

Investigate] the best chemistry you've ever used.

Are there any of our real lives that use chemical knowledge to cheat?

Discussion area of junior and senior chemistry competitions.

College Entrance Examination [Experience and Lessons].

First of all, you have to memorize the periodic table in the appendix of the textbook, don't just memorize it to 20, like some metals that are often done with questions, such as barium, gold, silver, etc.

Again, chemistry focuses on reactions, and more memorize reaction equations, which can be enhanced through practice.

The homework assigned by the teacher should be completed in a timely manner, which is not only a task, but also a timely memorization and consolidation of knowledge.

In addition, when you encounter a problem, try to use the theoretical knowledge you can think of to analyze it first, but if you really don't understand it, ask your classmates what they think, and finally go to the teacher!

--High school experience, hehe, hope can help you!

It's in general reference books... Just go buy a copy and take a good look at it.

The positive test includes: Choice: 1 Basic knowledge, 2 Ion coexistence problems, 3 Galvanic cells (positive and negative electrodes, whether the positive and negative electrodes react correctly), 4 Afgadero Constant problems, 5 Organic Molecular Formula problems, 6 Ion product constants 7 Periodic law problems.

Big question: al fe, the reaction is super important, it requires a plenary meeting, it must be a plenary meeting, otherwise you will lose points that you shouldn't lose. cl...It's also important that the galvanic battery figure it out, and there are some questions that can't be said and require thinking, but they are all the most basic and just combinations.

These are required for the exam. There is still a long time before the exam, so keep up with the teacher. I have been graduating for 1 year, and I can't tell what to summarize, anyway, I studied hard, I took the chemistry test of 100 in the college entrance examination, and my usual scores were around 95.

It's still important to play steady.

The textbooks in each province are different, and the syllabus is also different, do you have to say which province you are which textbook... I can't summarize it for you.

Chemical balance, electrochemistry, organic synthesis, element knowledge, these are the scope of the annual questions, let's do it. There are also a lot of chemical calculations, and both multiple-choice and large questions can be asked.

This should be available on the list.

When the ratio of the amount of NaOH to the amount of Al3+ is less than 3:1, that is, the excess of Al3+, the amount of aluminum hydroxide generated is calculated according to NaOH BMOLNAOH produces B 3mol of aluminum hydroxide precipitation.