Demo oge chemistry new version. Collection of Ideal Social Studies Essays
The manual contains 10 variants of standard test tasks for the 2017 Main State Exam.
The purpose of the manual is to develop the practical skills of students in preparing for the exam in grade 9 in chemistry in 2017.
The collection contains 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-study and self-control.
Order of the Ministry of Education and Science Russian Federation textbooks of the Exam publishing house are approved for use in educational institutions.
Examples.
If a piece of chalk is calcined, allowed to cool, and then placed in a test tube with a small amount of water, to which a few drops of phenolphthalein are added, then:
1) there will be no change
2) the color of the contents of the test tube will turn crimson
3) a clear colorless solution is formed
4) gas bubbles are observed
Are the following statements about rules correct?
safe work in a chemical laboratory?
A. Oxygen derived from hydrogen peroxide cannot be smelled.
B. Hydrogen obtained as a result of the interaction of zinc with hydrochloric acid, when ignited, does not need to be checked for purity.
1) only A is true
2) only B is true
3) both statements are correct
4) both judgments are wrong
CONTENT
Foreword
Information on two examination models for conducting the OGE in chemistry
Work instructions (model 1)
Chemistry Examination Grading System
Part 1
Part 2
Exam paper options 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 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 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 exam preparation, Grade 9, Koroshchenko A.S., Yashukova A.V., Ivanova R.G., 2015
The collection contains 30 practice options for exam papers in chemistry and is designed to prepare for the main state exam in grade 9. 31st option - control.
Each option includes test tasks of different types and difficulty levels, corresponding to parts 1 and 2 of the examination paper. At the end of the book, answers are given for self-examination of all tasks.
The proposed training options will help the teacher to organize preparation for the final certification, and students to independently test their knowledge and readiness for the final exam.
Examples.
Methane is characterized by the following statements
1) the molecule contains two carbon atoms
2) addition reactions are characteristic
3) does not dissolve in water
4) decolorizes bromine water
5) enters into substitution reactions with chlorine
For chemical elements of group VIA of the periodic system with an increase in relative atomic mass:
1) metallic properties are enhanced and valency in hydrogen compounds increases
2) the charge of the nucleus of the atom and the radius of the atom increase
3) the number of electron layers in the atom and the highest valency increase
4) non-metallic properties are enhanced and the number of electron layers in an 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 oxide (IV)
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 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
In this section, I systematize the analysis of tasks from the OGE in chemistry. Similar to the section, you will find detailed analysis 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, provided, of course, that you have 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.
Below, typical task options are analyzed, accompanied by the theory necessary for solving. All tasks are thematic - in front of each task there is a topic for a general understanding.
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 number 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 tasks, 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:
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
The element carbon is an oxidizing agent in the reaction |
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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.
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Establish a correspondence between the name of the substance and the reagents with which this substance can interact. |
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 solution with mass fraction copper (II) nitrate 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.
Training 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 of the examination paper
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.
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.
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 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. An aqueous solution of 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) acidic properties of their oxides increase;
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 of 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:
BUT)NaIandNaClO 3 1) Ca( Oh) 2
B)HFandRb 2 SO 4 2) AgNO 3
AT) 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
B) 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 abbreviated ionic reaction equation.
Chemistry Test Estimation System
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 response1. Compiled electronic balance.
3 │2O -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
Response contains errors in two elements
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
3
Correctly written 2 of the elements named above
2
Correctly written 1 element of the above (1st or 2nd)
1
All elements of the answer are written incorrectly
0
Maximum score
3
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
5
Four elements of the answer are correctly written
4
Three elements of the answer are correctly written
3
Correctly written two elements of the answer
2
One element of the answer is correctly written
1
All elements of the answer are written incorrectly
0
Maximum score
5