The principles of high school chemistry are electives

Elective 2. Chemical reaction. It refers to the process by which molecules are broken into atoms, and the atoms are rearranged and combined to form new molecules. It is often accompanied by luminescence and heat in the reaction.

Discoloration, formation of precipitate, etc., the basis for judging whether a reaction is a chemical reaction is whether the reaction produces new molecules.

Nuclear reaction. It is not a chemical reaction.

The essence of a chemical reaction is the old chemical bonds.

The process of breaking and the formation of new chemical bonds.

In the reaction, it is often accompanied by luminescence, heating, discoloration, and the formation of precipitates. The basis for determining whether a reaction is chemical is whether the reaction produces a new substance. According to the theory of chemical bonds, it can be judged whether a chemical reaction is based on whether there is the breaking of old bonds and the formation of new bonds in a change process.

The elective module "Principles of Chemical Reactions" is designed for students who have high requirements for the principles of chemical reactions, which still maintains the requirements of high school and the connection with the basic modules in terms of content depth, pays attention to the cognitive process and requirements of subject knowledge, and attaches more importance to the scientific connotation and logical relationship between things and development in the narrative and deduction. After carefully reading the content of the module "Principles of Chemical Reactions", I found that the most distinctive feature of the module compared with previous textbooks is that it has moved from qualitative description to quantitative analysis in the past.

In this way, students are guided to learn the most basic and core chemical knowledge of modern chemistry and master the most basic scientific research methods, which essentially improves the "gold content" of chemical knowledge learned by students, and promotes the further improvement of students' professional quality and scientific literacy.

The Fall 2007 Chemistry New Course Distance Learning Course Bulletin (No. 2) has a lot of discussion in this regard, so you can refer to it!

Elective 5 Books:

Elective 1: Chemistry and Life.

Elective 2: Chemistry and Technology.

Elective 3: Structure and Properties of Matter.

Elective 4: Chemical Reactions.

Principle. Elective 5: Fundamentals of Organic Chemistry.

Elective 6: Experimental Shade Chemistry.

The current high school chemistry textbook is divided into two parts: compulsory and elective.

Compulsory courses, as the name suggests, are required to be learned (regardless of whether they are liberal arts students.

is still a science student, and the first year of high school has to study chemistry as a compulsory textbook), there are two books, compulsory one and compulsory two. It reads as follows:

Correlation, classification of species, ionic reactions, and redox reactions.

Metallic non-metallic properties and elemental chemistry. Elemental chemistry mainly covers metals such as sodium, aluminum, iron, and non-metals such as chlorine, sulfur, silicon, and nitrogen.

Compulsory 2: Partial periodic table.

And a little bit of the periodic law, extremely basic chemical bonds.

Relevant knowledge, extremely basic principles of chemical reactions, including chemical thermodynamics (energy changes), electrochemistry (galvanic cells), and chemical kinetics (reaction rate.

Extremely basic organic chemistry (very scattered, difficult to generalize), resource development and utilization.

This book emmmm, it's hard to say, it talks a little bit about almost everything, but it doesn't talk about anything deeply, and it talks very loosely, and it is hung and ......beaten by electivesMaybe it's just a basic primer for electives. (Many reference books even put Compulsory 2 and Elective 4 together.)

There are two books in the compulsory part, which seem to have a lot of content but are all basic, and those who have a solid foundation are basically stress-free to learn.

The order of study of the high school chemistry celery sohong teaching version is as follows:

1 is compulsory in the first semester of the first semester and 2 in the second semester.

In the sophomore year of science, 4 principles of chemical reactions are elective in the first semester, and 5 fundamentals of organic chemistry are elective in the second semester.

The compulsory and elective 4 of the college entrance examination are compulsory, and the elective is one of them, but 75%-80% of the candidates will take the elective 5 exam. In general, the compulsory courses are taken first, i.e., Compulsory 1 and 2. Then there are the compulsory electives.

The compulsory elective courses are different in different provinces and cities. Most schools are elective four principles of chemical reactions.

Chapter 1 Chemistry from Experiments.

Section 1 Basic Methods of Chemical Experiments.

Distillation, filtration, extraction operations, etc.

Section 2 Application of stoichiometry in experiments.

The amount and application of the substance.

Chapter 2 Chemical Substances and Their Changes.

Section 1 Classification of Substances.

Classification, nothing to talk about.

Section 2 Ionic reactions.

Writing, Judgment, Application of Ionic Reactions.

Section 3 Redox reactions.

Writing, Judgment, Application, Calculation of Redox Reactions (Very Important) Chapter 3 Metals and Their Compounds.

Section 1 Chemical Properties of Metals.

Properties of alkali metals.

Section 2 Several Important Metal Compounds.

Properties of magnesium, aluminum, iron, copper.

Section 3 Metal materials with a wide range of uses.

Not very important.

Chapter 4 Non-metals and their compounds.

Section 1 The protagonist of inorganic non-metallic materials --- silicon.

Properties of silicon and nitrogen group elements.

Section 2 Elements --- Chlorine Enriched in Seawater.

Some properties of halogens, section III Oxides of sulfur and nitrogen.

Properties, applications, calculations of sulfur and nitrogen oxides.

Section 4 Sulfuric acid, nitric acid and ammonia.

Sulfuric acid, nitric acid and ammonia, application, calculation.

It is recommended that you borrow books to make good use of them.

In the general sciences, students will study "Principles of Chemical Reactions", "Fundamentals of Organic Chemistry" and "Structure and Properties of Matter" in one or two books, and in the liberal arts, "Chemistry and Life".

In the first semester of the second year of the new course, only elective 4 "Chemical Reaction Origin Mori Huai Theory" was studied

First semester: Elective 4, Elective 3 Chapter 1.

Second semester: Elective 3.

Chapters 2 and 3 and Elective 5.

Chapters I, II, and III.