Find a test point in the first two chapters of the compulsory module 2 of chemistry in senior high s

Look here, look here, pure hand play is not plagiarism

Memorize the position, number, and atomic mass of elements in the periodic table.

Understand similarities and rhesions between elements.

It will judge the strength of metallic and non-metallic properties.

The relationship between the number of masses, the number of protons, the number of neutrons, and the number of electrons is calculated.

Learn about nuclides and isotopes.

Understand the law of charge arrangement outside the nucleus (same period, same main group).

Amphoteric elements aluminum, zinc, beryllium.

Diagonal rule: Li-Mg be-al b-si is chemically similar.

Main group ordinal number = outermost electron number = valence electron number (valency) = highest positive valence (note: o, f exceptions).

Ionic compounds can contain covalent bonds, and covalent compounds do not contain ionic bonds.

Able to write electronic formulas, electronic reaction formulas, and structural formulas.

Learn about polar bonds, non-polar bonds, intermolecular forces, and hydrogen bonds.

Understand the polarity of molecules, similar dissolution rules (similar polarity, soluble).

Exothermic reactions: combustion, neutralization, replacement of active metals with acids, thermite, most chemical reactions.

Endothermic reactions: most decomposition reactions, redox reactions with C, Co, H2 as reducing agents, and hydrolysis of salts.

Heat of dissolution, non-endothermic and exothermic reactions.

Heat of neutralization: The heat released by the neutralization reaction of acid and alkali in a dilute solution to produce 1mol of H2O(L).

Enthalpy: Positive and negative.

Can write thermochemical equations.

Note: Indicate the aggregation form of each substance.

Indicate the reaction conditions.

The symbol of the enthalpy value.

Pay attention to the stoichiometric number.

The numerical value of the enthalpy value.

Understand the reaction of the positive and negative electrodes in a galvanic cell reaction.

Galvanic cell composition conditions: spontaneous redox reaction.

Electrode material properties.

Forming a closed circuit.

Electrolyte solution.

Positive and negative electrode judgment method: according to the two-level material.

According to the direction of the electron current.

According to the two-level phenomenon.

According to the two-stage reaction.

According to the direction of movement of the anion and cation in the electrolyte solution (yin, negative, positive).

Chemical reaction rate: v=c t=n [v(volume)*t].

Units: mol (l*s), mol*l -1*s -1

The average reaction rate is always positive.

The rate ratio is equal to the stoichiometric ratio.

Understand the influencing factors (fundamental and external).

Reversible reaction: The forward reaction and the reverse reaction are carried out at the same time.

The conditions for the forward and reverse reactions are the same.

Chemical equilibrium: A reversible reaction carried out under certain conditions, when the positive reaction rate is equal to the reverse reaction rate, the concentration of each component in the reaction mixture remains unchanged.

Features:1etc.: v positive = v inverse.

2.Constant: The concentration is a fixed value.

3.Motion: v positive = v inverse is not equal to 0, and the reaction is continuous.

4.Change: conditions change, the old balance is disrupted, and a new balance is established.

We got this ...... in our midterm examsIt's hard work, I'll take the exam tomorrow morning, and it's the same grade for the sake of me working so hard to type my notes, so give it ...... points

Another:1I suggest you buy a book called "The Handbook of Major Difficulties", which is good!

2.Chapter 2 of Compulsory 2 can be read together with Chapters 1 and 4 of Elective 4.

3.Someone who doesn't understand asks me. I'm very strong in science