OGE chemistry test. Trial work oge in chemistry

practice test to prepare for the OGE - 2017 in chemistry in grade 9

Prepared by:

Tribunskaya Elena Zhanovna,

chemistry teacher MAOU secondary school №7

Balakovo, Saratov region

Target:

1) repeat the studied material

2) introduce students to the structure examination work

3) help students prepare for the OGE.

Work instructions

2 hours (120 minutes) are given to complete the work. The work consists of 2 parts, including 22 tasks. Part 1 contains 19 short answer tasks, part 2 contains 3 long answer tasks.

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

Answers to tasks 16-19 are written as a sequence of numbers.

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

While working, 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 :
O.S Gabrielyan "Chemistry Grade 9". M., Bustard. year 2013.
O.S. 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 series 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 covalent polar and covalent non-polar bonds are respectively

1) RbClAndCl 2 3) O 3 AndH 2 S

2) HBrAndN 2 4) NH 3 AndH 2 O

Answer:

4 .Oxidation state +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 -BeOAndBaO, are respectively:

1) basic oxide and acid oxide

2) amphoteric oxide and basic oxide

3) acid oxide and basic oxide

4) basic oxide and amphoteric oxide

Answer:

6. A reaction whose equation is 2Rb+2 H 2 O=2 RbOH+ H 2 refers to reactions:

1) substitution, exothermic;

2) decomposition, exothermic;

3) accession, endothermic;

4) exchange, endothermic.

Answer:

7 . ionsSO 3 2- are formed during dissociation in an aqueous solution:

1) potassium sulfide; 3) potassium sulfate;

2) sulfuric acid; 4) potassium sulfite.

Answer:

8. Gas is released when interacting:

1) zinc hydroxide and of 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 whose formulas 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 OTOOH, S.

Answer:

10 .Beryllium oxide reacts with each of two substances:

1) NaAndH 2 O 3) HClAndO 2

2) H 2 OAndHNO 3 4) KOHAndH 2 SO 4

Answer:

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

1) AgAndRbOH;

2) N 2 OAndCO 2 ;

3) NiOAndHCI;

4) Ba(NO 3 ) 2 AndNH 3 .

Answer:

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

1) two substances; 3) one substance;

2) three substances; 4) no substance.

Answer:

13. Are the following statements correct?

A. You can separate alcohol from water by settling.

B. Water solution salt and chalk can be separated by filtration

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

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

Answer:

14. Ammonia is an oxidizing agent in the reaction 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 the nuclei of atoms decrease;

2) increase acid properties their oxides;

3) the lowest degree of oxidation decreases;

4) the radius of 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 bromine water;

4) isomerization reaction;

5) reaction with water.

Answer:

18. Match two substances with a reagent that can be used to distinguish between these substances

Substances: Reagent:

A)NaIAndNaClO 3 1) Ca( Oh) 2

B)HFAndRb 2 SO 4 2) AgNO 3

IN) CO 2 AndCaC 2 3) phenolphthalein

4) Ba(NO 3 ) 2

Answer:

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

NAME OF REAGENTS

SUBSTANCES:

A) zinc oxide 1)K 2 O, Na

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

IN) sulfuric 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 agent and reducing agent.

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

22. Substances 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 abbreviation ionic equation reactions.

Grading system test work in chemistry

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

Correct completion of each taskpart 1 advanced level of difficulty (16–19) is rated with 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 answers are considered incorrect and are evaluated at 0 points.

Tasks 18 and 19 are considered completed correctly if three matches are correctly established. Partially correct is the answer in which two out of three matches are established; it is worth 1 point. The remaining options are considered an incorrect answer and are evaluated at 0 points.

Part 1

Part 2

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

H 2 O 2 + NH 3 → N 2 + H 2 O

Specify the oxidizing agent and reducing agent.

Elements response

1. Compiled electronic balance.

3 │2О -1 + 2ē → 2O -2

1 │2 N -3 - 6ē →N 2 0

2. The coefficients are placed in the reaction equation:

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 the oxidizing agent is O -1

Evaluation criteria

Points

The answer contains an error in only one of the elements

There are two errors in the response.

Maximum score

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

Response elements

(Other formulations of the answer are allowed that do not distort its meaning)

1) Reaction Equation 2CO 2 + Ca( Oh) 2 = Ca( HCO 3)2

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

mclean.(Ca( HCO 3)2 ) = mr-ra (Ca(HCO 3)2 ) * w (Ca(HCO 3)2 )= 648 * 0.01=6.48g.

M(Ca(HCO 3)2 )=164g/mol

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

3) Calculate the volumeCO 2

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

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

Evaluation criteria

Points

The answer is correct and complete, includes all named elements

Correctly written 2 of the elements named above

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

All elements of the answer 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 that do not distort its meaning)

1) A chain of transformations has been compiled:

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 = Ve(OH) 2 ↓+ K 2 SO 4

4) Signs of reactions are described:

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

for the second reaction: precipitation of a white precipitate.

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

Ve 2 + + 2 Oh - = Ve(OH) 2 ↓

Evaluation criteria

Points

The answer is correct and complete, includes all named elements

The four elements of the answer are correctly written

Three elements of the answer are correctly written

Correctly written two elements of the answer

One element of the answer is correctly written

All elements of the answer are written incorrectly

Maximum score

State final certification of 2019 in chemistry for grade 9 graduates educational institutions is carried out in order to assess the level of general education of graduates in this discipline. The tasks test knowledge of the following sections of chemistry:

The structure of the atom.
Periodic law and Periodic system of chemical elements D.I. Mendeleev.
The structure of molecules. chemical bond: covalent (polar and non-polar), ionic, metallic.
Valency of chemical elements. The degree of oxidation of chemical elements.
Simple and complex substances.
Chemical reaction. Conditions and signs of leakage chemical reactions. Chemical equations.
Electrolytes and non-electrolytes. Cations and anions. Electrolytic dissociation of acids, alkalis and salts (medium).
Ion exchange reactions and conditions for their implementation.
Chemical properties simple substances: metals and non-metals.
Chemical properties of oxides: basic, amphoteric, acidic.
Chemical properties of bases. Chemical properties of acids.
Chemical properties of salts (medium).
Pure substances and mixtures. Rules for safe work in the school laboratory. chemical pollution environment and its consequences.
The degree of oxidation of chemical elements. Oxidizing agent and reducing agent. Redox reactions.
Calculation of the mass fraction of a chemical element in a substance.
Periodic law D.I. Mendeleev.
Initial information about organic matter. Biologically important substances: proteins, fats, carbohydrates.
Determination of the nature of the medium of a solution of acids and alkalis using indicators. Qualitative reactions to ions in solution (chloride, sulfate, carbonation, ammonium ion). Qualitative reactions to gaseous substances (oxygen, hydrogen, carbon dioxide, ammonia).
Chemical properties of simple substances. Chemical properties of complex substances.

Date of passing the OGE in chemistry 2019:
June 4 (Tuesday).

There are no changes in the structure and content of the examination paper in 2019 compared to 2018.

In this section you will find online tests to help you prepare for passing the OGE(GIA) in chemistry. We wish you success!

The standard OGE test (GIA-9) of the 2019 format in chemistry consists of two parts. The first part contains 19 tasks with a short answer, the second part contains 3 tasks with a detailed answer. In this regard, only the first part (i.e., the first 19 tasks) is presented in this test. According to the current structure of the exam, among these tasks, only 15 answers are offered. However, for the convenience of passing the tests, the site administration decided to offer answers in all tasks. But for tasks in which the answer options by the compilers of real control measuring materials(KIMs) are not provided, the number of answer options has been significantly increased in order to bring our test as close as possible to what you will face at the end of the school year.

The standard OGE test (GIA-9) of the 2019 format in chemistry consists of two parts. The first part contains 19 tasks with a short answer, the second part contains 3 tasks with a detailed answer. In this regard, only the first part (i.e., the first 19 tasks) is presented in this test. According to the current structure of the exam, among these tasks, only 15 answers are offered. However, for the convenience of passing the tests, the site administration decided to offer answers in all tasks. But for tasks in which answer options are not provided by the compilers of real control and measuring materials (KIMs), the number of answer options has been significantly increased in order to bring our test as close as possible to what you will have to face at the end of the school year.

The standard OGE test (GIA-9) of the 2018 format in chemistry consists of two parts. The first part contains 19 tasks with a short answer, the second part contains 3 tasks with a detailed answer. In this regard, only the first part (i.e., the first 19 tasks) is presented in this test. According to the current structure of the exam, among these tasks, only 15 answers are offered. However, for the convenience of passing the tests, the site administration decided to offer answers in all tasks. But for tasks in which answer options are not provided by the compilers of real control and measuring materials (KIMs), the number of answer options has been significantly increased in order to bring our test as close as possible to what you will have to face at the end of the school year.

The standard OGE test (GIA-9) of the 2017 format in chemistry consists of two parts. The first part contains 19 tasks with a short answer, the second part contains 3 tasks with a detailed answer. In this regard, only the first part (i.e., the first 19 tasks) is presented in this test. According to the current structure of the exam, among these tasks, only 15 answers are offered. However, for the convenience of passing the tests, the site administration decided to offer answers in all tasks. But for tasks in which answer options are not provided by the compilers of real control and measuring materials (KIMs), the number of answer options has been significantly increased in order to bring our test as close as possible to what you will have to face at the end of the school year.

The standard OGE test (GIA-9) of the 2016 format in chemistry consists of two parts. The first part contains 19 tasks with a short answer, the second part contains 3 tasks with a detailed answer. In this regard, only the first part (i.e., the first 19 tasks) is presented in this test. According to the current structure of the exam, among these tasks, only 15 answers are offered. However, for the convenience of passing the tests, the site administration decided to offer answers in all tasks. But for tasks in which answer options are not provided by the compilers of real control and measuring materials (KIMs), the number of answer options has been significantly increased in order to bring our test as close as possible to what you will have to face at the end of the school year.

The standard OGE test (GIA-9) of the 2015 format in chemistry consists of two parts. The first part contains 19 tasks with a short answer, the second part contains 3 tasks with a detailed answer. In this regard, only the first part (i.e., the first 19 tasks) is presented in this test. According to the current structure of the exam, among these tasks, only 15 answers are offered. However, for the convenience of passing the tests, the site administration decided to offer answers in all tasks. But for tasks in which answer options are not provided by the compilers of real control and measuring materials (KIMs), the number of answer options has been significantly increased in order to bring our test as close as possible to what you will have to face at the end of the school year.

When completing tasks A1-A19, select only one correct option.
When completing tasks B1-B3, select two correct options.

When completing tasks A1-A15, select only one correct option.

When completing tasks A1-A15, choose only one correct option.

Option

control measuring materials for

holding in 2017 the main state

Chemistry exam

Work instructions

The examination paper consists of two parts, including 22 tasks. Part 1 contains 19 short answer tasks, part 2 contains 3 long answer tasks.

2 hours (120 minutes) are allotted to complete the examination paper in chemistry.

Answers to tasks 1-15 are written as a single digit, which corresponds to the number of the correct answer. Write this figure in the answer field in the text of the work, and then transfer it to the answer sheet No. 1.

Answers to tasks 16–19 are written as a sequence of numbers. Write this sequence of numbers in the answer field in the text of the work, and then transfer it to the answer form No. 1.

For tasks 20–22, a full detailed answer should be given, including the necessary reaction equations and calculations. Tasks are performed on the answer sheet No. 2.

When performing work, you can use the Periodic Table of 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.

When completing assignments, you can use a draft. Draft entries do not count towards the assessment of the work.

The points you get for completed tasks are summed up.

Try to complete as many tasks as possible and score the most points.

We wish you success!

Part 1

The answer to tasks 1-15 is one digit, which corresponds to the number of the correct answer. Write this figure in the answer field in the text of the work, and then transfer it to the ANSWER FORM No. 1 to the right of the number of the corresponding task, starting from the first cell.

The chemical element of the 3rd period of the VA-group corresponds to the scheme of distribution of electrons over the layers:

Answer:

An ionic bond is characteristic of each of two substances:

1) potassium chloride and hydrogen chloride

2) barium chloride and sodium oxide

3) sodium chloride and carbon monoxide (IV)

4) lithium oxide and chlorine

Answer:

Each of the two substances is complex

1) water and chlorine

2) water and hydrogen

3) hydrogen and quartz

4) benzene and water

Answer:

The largest number of positive ions is formed during the dissociation of 1 mol

1) sulfuric acid

2) sodium phosphate

3) iron(III) nitrate

4) potassium sulfide

Answer:

Both substances of the pair react with water at room temperature

1) oxygen and carbon

2) magnesium and sulfur

3) aluminum and phosphorus

4) sodium and calcium

Answer:

Among the substances: Zn, Al 2 O 3, Cu (OH) 2, BaCl 2 - reacts with a solution of sulfuric acid enters (s)

4) four

Answer:

Are the judgments about the ways of separating mixtures correct?

A. Evaporation refers to the physical methods of separation of mixtures.

B. Separation of a mixture of water and ethanol is possible by filtration.

1) only A is true

2) only B is true

3) both statements are correct

4) both judgments are wrong

Answer:

The element carbon is the oxidizing agent in the reaction

		2CO + O 2 \u003d 2CO 2
		CO 2 + 2Mg = 2MgO + C
		CH 4 + 2O 2 \u003d CO 2 + 2H 2 O
		C + 2H 2 SO 4 \u003d CO 2 + 2H 2 O + 2SO 2

Answer:

The answer to tasks 16-19 is a sequence of numbers that should be written in the ANSWER FORM No. 1 to the right of the number of the corresponding task, starting from the first cell. Write your answer without spaces, commas and other additional characters.

Write each number in a separate cell in accordance with the samples given in the form.

When completing tasks 16, 17 from the proposed list of answers, select the two correct ones and write down the numbers under which they are indicated in the table.

16. What magnesium and silicon have in common is

1) the presence of three electronic layers in their atoms

2) the existence of their corresponding simple substances in the form of diatomic molecules

3) that they belong to metals

4) the fact that the value of their electronegativity is less than that of phosphorus

5) their formation of higher oxides with the general formula EO 2

Answer:

When completing tasks 18, 19, for each element of the first column, select the corresponding element from the second column. Write in the table the selected numbers under the corresponding letters. Numbers in the answer may be repeated.

SUBSTANCES

REAGENT

	H 2 SO 4 and HNO 3
	MgBr 2 and MgCl 2
	AgNO 3 and Zn(NO 3) 2

Answer:

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

Answer:

Do not forget to transfer all answers to the answer sheet No. 1 in accordance with the instructions for doing the work.

Part 2

For answers to tasks 20-22, use the ANSWER FORM No. 2.

First write down the task number (20, 21 or 22), and then a detailed answer to it. Write your answers clearly and legibly.

20. Using the electron balance method, write the equation for the reaction

KMnO 4 + KOH → K 2 MnO 4 + O 2 + H 2 O

Determine the oxidizing agent and reducing agent.

21. To 376 g of a solution with a mass fraction of copper (II) nitrate of 7.5% was added an excess of potassium hydroxide solution. Determine the mass of the precipitate.

22. Substances are given: Zn, HCl (solution), H 3 PO 4, AgNO 3, NH 4 Cl, Ba(NO 3) 2. Using water and the necessary substances only from this list, get zinc nitrate in two stages. Describe the signs of ongoing reactions. For an ion exchange reaction, write the abbreviated ionic reaction equation.

In this section, I systematize the analysis of tasks from the OGE in chemistry. Similar to the section, you will find detailed analyzes with instructions for solving typical problems in chemistry in the OGE grade 9. Before analyzing each block of typical tasks, I give a theoretical background, without which the solution of this task is impossible. Theory is exactly as much as it is enough to know to successfully complete the task on the one hand. On the other hand, I tried to describe the theoretical material in an interesting and understandable language. I am sure that after training on my materials, you will not only successfully pass the OGE in chemistry, but also fall in love with this subject.

General information about the exam

OGE in chemistry consists of three parts.

In the first part 15 tasks with one answer- this is the first level and the tasks in it are simple, with, of course, basic knowledge of chemistry. These tasks do not require calculations, except for task 15.

The second part consists of four questions- in the first two - 16 and 17 it is necessary to choose two correct answers, and in 18 and 19 to correlate the values or statements from the right column with the left one.

The third part is problem solving. At 20, you need to equalize the reaction and determine the coefficients, and at 21, solve the calculation problem.

Fourth part - practical, simple, but you need to be careful and careful, as always when working with chemistry.

Total work given 140 minutes.

Parsed below typical options tasks, accompanied by the theory necessary for the solution. All tasks are thematic - in front of each task there is a topic for a general understanding.

OGE chemistry test. Trial work oge in chemistry

General information about the exam

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