I will solve oge chemistry gushchin with an explanation. Oge in chemistry

The collection contains 30 training options examination papers in chemistry and is designed to prepare for the main state examination in the 9th grade. Option 31 is the control one.
Each option includes test items of different types and levels of difficulty, corresponding to parts 1 and 2 of the exam paper. At the end of the book, self-test answers are given for all tasks.
The proposed training options will help the teacher organize preparation for the final certification, and the students - independently test their knowledge and readiness to pass the final exam.

Examples.
Methane is characterized by the following statements
1) the molecule contains two carbon atoms
2) addition reactions are characteristic
3) insoluble in water
4) decolorizes bromine water
5) enters with chlorine in substitution reactions

Have chemical elements VIA group of the periodic system with increasing relative atomic mass:
1) enhanced metallic properties and increased valence in hydrogen compounds
2) the charge of the atomic nucleus and the radius of the atom increase
3) the number of electronic layers in the atom and the higher valence increase
4) non-metallic properties are enhanced and the number of electronic layers in the atom increases

Compounds with covalent polar and covalent non-polar bonds are, respectively:
1) chlorine and hydrogen chloride
2) water and nitrogen
3) hydrogen sulfide and methane
4) oxygen and sulfur (IV) oxide

CONTENT
Foreword
Option 1
Option 2
Option 3
Option 4
Option 5
Option 6
Option 7
Option 8
Option 9
Option 10
Option 11
Option 12
Option 13
Option 14
Option 15
Option 16
Option 17
Option 18
Option 19
Option 20
Option 21
Option 22
Option 23
Option 24
Option 25
Option 26
Option 27
Option 28
Option 29
Option 30
Option 31 (control)
Answers.

Free download the e-book in a convenient format, watch and read:
Download the book OGE 2017, Chemistry, 30 training options, Koroshchenko A.S., Kuptsova A.V. - fileskachat.com, fast and free download.

OGE 2020, Chemistry, 10 training options, Koroshchenko A.S., Kuptsova A.V., 2019
OGE-2019, Chemistry, 10 training options for examination papers to prepare for the main state exam, Koroshchenko A.S., Kuptsova A.V., 2019

OGE 2017 Chemistry Typical test tasks of Koroshchenko

M .: 2017 .-- 96 p.

The manual contains 10 options for typical test items of the Main State Exam 2017. The purpose of the manual is to practice students' practical skills in preparing for the 9th grade exam in chemistry in 2017. The collection provides answers to all test options and provides detailed analysis all tasks of one of the options. The manual is intended for teachers and methodologists who use tests to prepare students for the 2017 Main State Exam, it can also be used by students for self-preparation and self-control.

Format: pdf

The size: 1.5 Mb

Watch, download:drive.google

CONTENT
Foreword 5
Information about two examination models conducting the OGE in chemistry 8
Work instructions (model 1) 9
Chemistry examination paper grading system
Part 1 10
Part 2 10
Exam paper options
Option 1
Part 1 18
Part 2 22
Option 2
Part 1 23
Part 2 27
Option 3
Part 1 ; 28
Part 2 32
Option 4
Part 1 33
Part 2 37
Option 5
Part 1 38
Part 2 42
Work instructions (model 2) 43
Instructions for completing the task 23 44
Option 6
Part 1 46
Part 2 50
Option 7
Part 1 51
Part 2 55
Option 8
Part 1 56
Part 2 60
Option 9
Part 1 62
Part 2 66
Option 10
Part 1 67
Part 2 71
Solution of tasks of option 3
Part 1 72
Part 2 83
Answers and solutions
Part 1 85
Part 2 86
Answers to the tasks of part 2 88

Basic general education ends with the Basic State Exam of graduates, during which the compliance of their knowledge with the requirements of the state educational standard is checked.
The examination of 9th grade graduates of general education organizations is carried out in the form of testing.
Requirements for the level of training of graduates in chemistry specified in the federal component state standard general education, are the basis for the development of control measuring materials for the OGE.
According to these requirements, a certain system of knowledge about inorganic and organic matter, their composition, properties and application. This system of knowledge, which is based on the Periodic Law and the Periodic Table of Chemical Elements by D.I. Mendeleev, constitutes the invariant core of all general education programs in chemistry. In the proposed examination work, it is this content that was the basis for the development of control measuring materials.
The purpose of this manual is to acquaint teachers and students with the structure and content of the examination work, to enable the graduate to independently test his readiness for a new form of exam in chemistry - in the form of testing.

Practice test for preparation for OGE - 2017 in chemistry in grade 9

Prepared by:

Tribunskaya Elena Zhanovna,

chemistry teacher MAOU SOSH №7

balakovo Saratov region

Purpose:

1) repeat the material studied

2) acquaint students with the structure of the examination work

3) help students prepare for the OGE.

Work instructions

It takes 2 hours (120 minutes) to complete the work. The work consists of 2 parts, including 22 tasks. Part 1 contains 19 tasks with a short answer, part 2 contains 3 tasks with a detailed answer.

Answers to tasks 1-15 are written in the form of one digit, which corresponds to the number of the correct answer.

Answers to tasks 16-19 are written in the form of a sequence of numbers.

For tasks 20-22, a full detailed answer should be given, including the necessary reaction equations and the solution of the problem.

When performing work, you can use Periodic system chemical elements D.I. Mendeleev, a table of the solubility of salts, acids and bases in water, an electrochemical series of metal voltages and a non-programmable calculator.

Used textbooks and Internet resources :
OS Gabrielyan "Chemistry Grade 9". M., Bustard. year 2013.
OS Gabrielyan "Chemistry Grade 8". M., Bustard. year 2013.
Open BANK of tasks in chemistry OGE

Part 1

1. Three electron layers and one electron in the outer electron layer correspond to an atom:

1) chlorine; 3) sodium;

2) lithium; 4) hydrogen.

Answer:

2. In which row the metallic properties of the corresponding simple substances are enhanced:

1) beryllium - magnesium - calcium;

2) fluorine - bromine - chlorine;

3) sulfur - oxygen - selenium;

4) carbon - lead - silicon.

Answer:

3. Compounds with a covalent polar and covalent non-polar bond are, respectively

1) RbCl andCl 2 3) O 3 andH 2 S

2) HBr andN 2 4) NH 3 andH 2 O

Answer:

4 .The oxidation degree +5 phosphorus exhibits in the compound

1) P 2 O 3 3) Na 3 P

2) PH 3 4) Mg (H 2 PO 4 ) 2

Answer:

5. Substances whose formulas are -BeO andBaO, are respectively:

1) basic oxide and acidic oxide

2) amphoteric oxide and basic oxide

3) acidic oxide and basic oxide

4) basic oxide and amphoteric oxide

Answer:

6. The reaction, the equation of which is 2Rb+2 H 2 O=2 RbOH+ H 2 refer to reactions:

1) substitution, exothermic;

2) decomposition, exothermic;

3) joining, endothermic;

4) exchange, endothermic.

Answer:

7 ... JonahSO 3 2- formed upon dissociation in an aqueous solution:

1) potassium sulfide; 3) potassium sulfate;

2) sulfuric acid; 4) potassium sulfite.

Answer:

8. Gas is released during interaction:

1) zinc hydroxide and hydrochloric acid; 3) copper hydroxide (II) and nitric acid;

2) copper sulfide and hydrochloric acid 4) potassium oxide and nitric acid.

Answer:

9. Calcium interacts with each of the substances, the formulas of which are listed in the group:

1) TO, O 2 , HCl; 3) O 2 , H 2 O, N 2 ;

2) Cu, O 2 , N 2; 4) H 2 Oh,TOOH, S.

Answer:

10 Beryllium oxide reacts with each of two substances:

1) Na andH 2 O 3) HCl andO 2

2) H 2 Oand HNO 3 4) KOHand H 2 SO 4

Answer:

11 ... The nitric acid solution reacts with each of two substances:

1) Agand RbOH;

2) N 2 Oand CO 2 ;

3) NiOand HCI;

4) Ba (NO 3 ) 2 and NH 3 .

Answer:

12. Among the substances: sodium chloride, sodium sulfide, sodium sulfate - in reaction with copper nitrate (II) enters

1) two substances; 3) one substance;

2) three substances; 4) no substance.

Answer:

13. Are the following judgments correct?

A. Alcohol can be separated from water by settling.

B. Aqueous solution of salt and chalk can be separated by filtration

1) only A is true; 3) both judgments are correct;

2) only B is true; 4) both judgments are wrong.

Answer:

14. Ammonia is an oxidizing agent in the reaction, the scheme of which:

1) N 2 + H 2 → NH 3 ; 3) NH 3 + CuO → Cu + N 2 + H 2 O;

2) NH 3 + O 2 → N 2 + H 2 O; 4) NH 3 + K → KNH 2 + H 2 .

Answer:

15 ... On which diagram does the distribution of mass fractions of elements correspond to the qualitative composition of ammonium phosphate?

1) 3)

2) 4)

Answer:

Part 2

16. Among the chemical elementsCl - S - R

1) the charges of atomic nuclei decrease;

2) the acidic properties of their oxides increase;

3) the lowest oxidation state decreases;

4) the radius of the atoms decreases;

5) non-metallic properties are enhanced.

Answer:

17. For hydrocarbon C 2 H 6 characteristic:

1) substitution reaction;

2) dehydrogenation reaction;

3) discoloration of bromine water;

4) isomerization reaction;

5) reaction with water.

Answer:

18. Establish a correspondence between two substances and a reagent with which you can distinguish between these substances

Substances: Reagent:

AND)NaI andNaClO 3 1) Ca( OH) 2

B) HFand Rb 2 SO 4 2) AgNO 3

IN) CO 2 and CaC 2 3) phenolphthalein

4) Ba (NO 3 ) 2

Answer:

19. Establish a correspondence between the name of substances and reagents with which this substance can interact.

NAME REAGENTS

SUBSTANCES:

A) zinc oxide 1)K 2 O, Na

B) carbon dioxide 2)SO 2 , H 2 O

IN) sulphuric acid 3) Ca( OH) 2 , H 2 O

4) HBr, Ca( OH) 2

Answer:

Part 2

20. Using the electronic balance method, arrange the coefficients in the reaction equation, the scheme of which

H 2 O 2 + NH 3 → N 2 + H 2 O

Determine the oxidizing and reducing agent.

21. Carbon dioxide was passed through the calcium hydroxide solution. 648 g of calcium bicarbonate was formed with a mass fraction of 1%. Calculate the volume of gas reacted

22. Substances are given: Ve,NaNO 3 , KOH, H 2 SO 4 , Na 2 SO 4 , MgO... Using water and the necessary substances only from this list, get beryllium hydroxide in two stages. Describe the signs of ongoing reactions. For an ion exchange reaction, write the abbreviated ionic reaction equation.

Chemistry test paper grading system

Correct execution of each of the taskspart 1 the basic level of difficulty (1-15) is estimated at 1 point.

Faithful completion of each of the taskspart 1 the increased level of difficulty (16-19) is estimated at a maximum of 2 points. Tasks 16 and 17 are considered correctly completed if two answers are correctly selected in each of them. For an incomplete answer - one of the two answers is correctly named or three answers are named, of which two are correct - 1 point is given. The rest of the answer options are considered incorrect and are evaluated at 0 points.

Tasks 18 and 19 are considered completed correctly if three matches are correctly established. The answer is considered to be partially correct if two matches out of three are established; it is estimated at 1 point. The rest of the options are considered an incorrect answer and are scored 0 points.

Part 1

Part 2

20. Using the electronic balance method, arrange the coefficients in the reaction equation, the scheme of which:

H 2 O 2 + NH 3 → N 2 + H 2 O

Indicate oxidant and reductant.

The elements answer

1. An electronic balance has been compiled.

3 │2O -1 + 2ē → 2О -2

1 │2 N -3 - 6ē →N 2 0

2. Coefficients in the reaction equation are arranged:

3 H 2 O 2 + 2 NH 3 → N 2 + 6 H 2 O

3. It is indicated that the reducing agent isN -3 , and oxidizing agent О -1

Evaluation criteria

Points

The answer contains an error in only one of the elements

The answer contains errors in two elements.

Maximum score

21. Carbon dioxide was passed through the calcium hydroxide solution. 648 g of calcium bicarbonate was formed with a mass fraction of 1%. Calculate the volume of gas reacted

Response elements

(other formulations of the answer are allowed without distorting its meaning)

1) Reaction equation 2CO 2 + Ca( OH) 2 = Ca( HCO 3)2

2) Calculated the mass and amount of the substance of potassium bicarbonate obtained as a result of the reaction:

m clean (Ca( HCO 3)2 ) = m solution (Ca(HCO 3)2 ) * w (Ca(HCO 3)2 )= 648 * 0.01 \u003d 6.48g.

M(Ca(HCO 3)2 ) \u003d 164g / mol

n(Ca(HCO 3)2 ) \u003d 6.48g / 164g / mol \u003d 0.04mol

3) Calculate the volumeCO 2

n(CO 2 )=2 n(Ca(HCO 3)2 )=2 * 0.04 \u003d 0.08 mol

V (CO 2 ) \u003d n * V m = 0,08 * 22,4 = 1.8 l.

Evaluation criteria

Points

The answer is correct and complete, includes all the named elements

Correctly recorded 2 elements of the above

Correctly written 1 element of the above (1st or 2nd)

All response elements are written incorrectly

Maximum score

22. Are given substances: Ve, NaNO 3 , KOH, H 2 SO 4 , Na 2 SO 4 , MgO.Using water and the necessary substances only from this list, get beryllium hydroxide in two stages. Describe the signs of ongoing reactions. For an ion exchange reaction, write the abbreviated ionic reaction equation.

Response elements

(other formulations of the answer are allowed without distorting its meaning)

1) Compiled a chain of transformations:

Ve VeSO 4 Ve(OH) 2

Two reaction equations are composed:

2) Ve + H 2 SO 4 = VeSO 4 + H 2

3) VeSO 4 + 2KOH \u003d Ve(OH) 2 ↓ + K 2 SO 4

4) The signs of the reactions are described:

for the first reaction: zinc dissolves, colorless gas is released;

for the second reaction: precipitation of a white precipitate.

5) An abbreviated ionic equation of the second reaction has been compiled:

Ve 2 + + 2 OH - = Ve(OH) 2 ↓

Evaluation criteria

Points

The answer is correct and complete, includes all the named elements

Correctly written four elements of the answer

Three elements of the answer are written correctly

Correctly written two elements of the answer

One answer item is correctly written

All response elements are written incorrectly

Maximum score

The manual contains 10 options for typical test items of the Main State Exam 2017.
The purpose of the manual is to practice students' practical skills in preparing for the 9th grade exam in chemistry in 2017.
The collection provides answers to all test options and provides a detailed analysis of all tasks of one of the options.
The manual is intended for teachers and methodologists who use tests to prepare students for the 2017 Main State Exam, it can also be used by students for self-preparation and self-control.
By order of the Ministry of Education and Science Russian Federation tutorials Exam Publishing House is approved for use in educational institutions.

Examples.
If you ignite a piece of chalk, let it cool, and then place it in a test tube with a small amount of water, to which a few drops of phenolphthalein have been added, then:
1) no changes will occur
2) the color of the contents of the tube will turn crimson
3) a clear, colorless solution is formed
4) there is a release of gas bubbles

Are the following judgments about the rules true?
safe work in a chemical laboratory?
A. Oxygen obtained from hydrogen peroxide cannot be detected by smell.
B. Hydrogen obtained from the interaction of zinc with hydrochloric acid does not need to be checked for purity during ignition.
1) only A is true
2) only B is true
3) both statements are true
4) both judgments are wrong

CONTENT
Foreword
Information about two examination models for conducting the OGE in chemistry
Work instructions (model 1)
Chemistry examination paper grading system
Part 1
Part 2
Variants of examination work Option 1
Part 1
Part 2
Option 2
Part 1
Part 2
Option 3
Part 1
Part 2
Option 4
Part 1
Part 2
Option 5
Part 1
Part 2
Work instructions (model 2)
Instructions for completing the task 23
Option 6
Part 1
Part 2
Option 7
Part 1
Part 2
Option 8
Part 1
Part 2
Option 9
Part 1
Part 2
Option 10
Part 1
Part 2
Solution of tasks of option 3
Part 1
Part 2
Answers and solutions
Part 1
Part 2
Answers to the tasks of part 2.

Free download the e-book in a convenient format, watch and read:
Download the book OGE 2017, Chemistry, Grade 9, Typical test tasks, Koroshchenko A.S. - fileskachat.com, fast and free download.

OGE-2019, Chemistry, 10 training options for examination papers to prepare for the main state exam, Koroshchenko A.S., Kuptsova A.V., 2019
OGE 2019, Chemistry, grade 9, 32 options, Typical test tasks, Molchanova G.N., Medvedev Yu.N., Koroshchenko A.S.
OGE 2019, Chemistry, grade 9, 14 options, Typical test tasks, Molchanova G.N., Medvedev Yu.N., Koroshchenko A.S.
OGE (GIA-9), Chemistry, Diagnostic workbook for preparation for the exam, grade 9, Koroshchenko A.S., Yashukova A.V., Ivanova R.G., 2015

a scale for recalculating the primary score for completing the examination paper in 2020 into a mark on a five-point scale;
a scale for recalculating the primary score for completing the 2019 examination paper into a mark on a five-point scale;
a scale for recalculating the primary score for completing the examination work in 2018 into a mark on a five-point scale;
a scale for recalculating the primary score for completing the examination work in 2017 into a mark on a five-point scale;
a scale for recalculating the primary score for completing the exam work in 2016 into a mark on a five-point scale;
a scale for recalculating the primary score for the completion of the examination work in 2015 into a mark on a five-point scale;
a scale for recalculating the primary score for the examination work in 2014 into a mark on a five-point scale;
a scale for recalculating the primary score for the execution of the examination work in 2013 into a mark on a five-point scale.

Changes in the demonstration options for the OGE in chemistry

In 2015 in demo options for the OGE in chemistry was the structure of variants has been changed:

The option began to consist two-piece.
Numbering assignments became through throughout the version without letter designations A, B, C.
The form of recording the answer in tasks with a choice of answer has been changed: it became necessary to record the answer the number with the number of the correct answer (not circled).

Since 2014, demonstration options for the OGE in chemistry presented two models... These models differ only in the practice-oriented tasks of the last part, moreover, model 1 is similar to the works of previous years, and model 2 provides for the implementation real chemical experiment (tasks С3, С4 in the version of 2014 and tasks 22.23 in the versions of 2015-2016). To organize and conduct a real chemical experiment in model 2 Federal Institute pedagogical measurements methodological materials were developed. The choice of the exam model is carried out by the educational authorities of the subjects of the Russian Federation.

IN demo versions of the OGE 2016-2019 in chemistry versus 2015 demos there were no changes.

In 2020, only one model of the demonstration version of the OGE in chemistry, in which, in relation to the previous 2019, the following changes:

increased share of tasks with multiple choice of answers (6, 7, 12, 14, 15);
increased the proportion of tasks for establishing a correspondence between the positions of two sets (10, 13, 16);
added task 1, providing for testing the ability to work with text information;
in part 2 included task 21, aimed at checking the understanding of the existence of the relationship between different classes of inorganic substances and the formation of the ability to draw up the equations of reactions reflecting this relationship. Another controlled skill is the ability to compose ion exchange reaction equations, in particular, the abbreviated ionic equation;
added binding practical part, which includes two tasks: 23 and 24:
- in task 23 from the proposed list it was necessary to select two substances, the interaction with which reflects chemical properties specified in the condition for specifying the substance, and draw up two reaction equations with them;
- in task 24 it was necessary to carry out two reactions corresponding to the composed reaction equations.