Who are these tests for?
These materials are intended for schoolchildren preparing for OGE-2018 in chemistry. They can also be used for self-control when studying a school chemistry course. Each one is dedicated to a specific topic that a ninth-grader will meet on the exam. The test number is the number of the corresponding task in the OGE form.
How are subject tests structured?
Will there be other subject tests published on this site?
Undoubtedly! I plan to post tests on 23 topics, 10 tasks each. Stay tuned!
What else is on this site for those preparing for the OGE-2018 in chemistry?
Do you feel like something is missing? Would you like to expand any sections? Need some new materials? Is there anything that needs to be fixed? Found any errors?
Good luck to everyone preparing for the Unified State Exam and the Unified State Exam!
Part 1 contains 19 tasks with a short answer, including 15 tasks of a basic level of complexity (the serial numbers of these tasks: 1, 2, 3, 4, ...15) and 4 tasks higher level complexity (ordinal numbers of these tasks: 16, 17, 18, 19). Despite all their differences, the tasks in this part are similar in that the answer to each of them is written briefly in the form of one number or a sequence of numbers (two or three). The sequence of numbers is written on the answer form without spaces or other additional characters.
Part 2, depending on the CMM model, contains 3 or 4 tasks high level complexity, with a detailed answer. The difference between exam models 1 and 2 lies in the content and approaches to completing the last tasks of the exam options:
Examination model 1 contains task 22, which involves performing a “thought experiment”;
Examination model 2 contains tasks 22 and 23, which involve performing laboratory work (a real chemical experiment).
Scale for converting points to grades:
"2"– from 0 to 8
"3"– from 9 to 17
"4"– from 18 to 26
"5"– from 27 to 34
System for assessing the performance of individual tasks and the examination work as a whole
Correct completion of each of tasks 1–15 is scored 1 point. Correct completion of each of tasks 16–19 is assessed with a maximum of 2 points. Tasks 16 and 17 are considered completed correctly if two answer options are correctly selected in each of them. For an incomplete answer - one of two answers is correctly named or three answers are named, two of which are correct - 1 point is given. The remaining answer options are considered incorrect and are scored 0 points. Tasks 18 and 19 are considered completed correctly if three correspondences are correctly established. An answer in which two out of three matches are established is considered partially correct; it is worth 1 point. The remaining options are considered an incorrect answer and are scored 0 points.
The tasks of Part 2 (20–23) are checked by a subject commission. Maximum score for a correctly completed task: for tasks 20 and 21 - 3 points each; in model 1 for task 22 – 5 points; in model 2 for task 22 - 4 points, for task 23 - 5 points.
120 minutes are allotted to complete the examination work in accordance with model 1; according to model 2 – 140 minutes
In this section, I systematize the analysis of problems from the OGE in chemistry. Similar to the section, you will find detailed analyzes with instructions for solving typical problems in chemistry in the 9th grade OGE. Before analyzing each block of typical problems, I provide theoretical information, without which solving this task is impossible. There is only as much theory as 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 completing the training using 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 not difficult, provided, of course, you have basic knowledge of chemistry. These tasks do not require calculations, with the exception of task 15.
The second part consists of four questions- in the first two - 16 and 17, you need to choose two correct answers, and in 18 and 19, correlate the meanings or statements from the right column with the left.
The third part is problem solving. At 20 you need to equalize the reaction and determine the coefficients, and at 21 you need to solve the calculation problem.
Part four - practical, is not difficult, but you need to be careful and careful, as always when working with chemistry.
Total amount given for work 140 minutes.
Below are typical variants of tasks, accompanied by the theory necessary for the solution. All tasks are thematic - opposite each task a topic is indicated for general understanding.
Specification
control measuring materials
to be held in 2017
main state exam
in CHEMISTRY
1. Purpose of CMM for OGE- to assess the level of general educational training in chemistry of graduates of IX grades of general education organizations for the purpose of state final certification of graduates. The exam results can be used when admitting students to specialized classes in secondary schools.
OGE is conducted in accordance with Federal Law Russian Federation dated December 29, 2012 No. 273-FZ “On education in the Russian Federation.”
2. Documents defining the content of CMM
3. Approaches to content selection and CMM structure development
The development of CMM for the OGE in chemistry was carried out taking into account the following general provisions.
- KIMs are focused on testing the assimilation of a knowledge system, which is considered as an invariant core of the content of existing chemistry programs for primary schools. In the Federal component of the state educational standard in chemistry, this knowledge system is presented in the form of requirements for the training of graduates.
- CMMs are designed to provide the opportunity for differentiated assessment of graduates’ training. For these purposes, testing the mastery of the basic elements of the content of a chemistry course in grades VIII-IX is carried out at three levels of complexity: basic, advanced and high.
- The educational material on the basis of which the assignments are based is selected on the basis of its significance for the general education training of secondary school graduates. At the same time special attention is given to those elements of content that are developed in the chemistry course of grades X-XI.
4. Connection of the OGE exam model with the Unified State Exam KIM
The most important principle taken into account when developing CIMs for the Unified State Examination is their continuity with the Unified State Examination CIMs, which is due to uniform approaches to assessing the educational achievements of students in chemistry in primary and secondary schools.
The implementation of this principle is ensured by: the uniformity of requirements for the selection of content tested by OGE tasks; similarity of structures of exam versions of KIM for the OGE and the Unified State Exam; the use of similar models of tasks, as well as the identity of assessment systems for tasks of similar types used in both the OGE and the Unified State Exam.
5. Characteristics of the structure and content of CMM 1
In 2017, for the choice of executive authorities of the constituent entities of the Russian Federation that manage education, two models of examination work are offered, the structure and content of the tasks included in it are similar to the models of examination work in 2014.
Each version of the examination paper consists of two parts.
Part 1 contains 19 tasks with a short answer, including 15 tasks of a basic level of complexity (the serial numbers of these tasks: 1, 2, 3, 4, ... 15) and 4 tasks of an increased level of complexity (the serial numbers of these tasks: 16, 17, 18, 19). Despite all their differences, the tasks in this part are similar in that the answer to each of them is written briefly in the form of one number or a sequence of numbers (two or three). The sequence of numbers is written on the answer form without spaces or other additional characters.
Part 2 depending on the CMM model, it contains 3 or 4 tasks of a high level of complexity, with a detailed answer. The difference between exam models 1 and 2 lies in the content and approaches to completing the last tasks of the exam options:
- exam model 1 contains task 22, which involves performing a “thought experiment”;
- exam model 2 contains tasks 22 and 23, which involve performing a real chemical experiment.
The tasks are arranged according to the principle of a gradual increase in their level of difficulty. The share of tasks of basic, advanced and high levels of complexity in the work was 68, 18 and 14%, respectively.
A general idea of the number of tasks in each part of the examination paper of models 1 and 2 is given in Table 1.
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1 Model 1 (M1) corresponds demo version No. 1; model 2 (M2) – demonstration version No. 2.
The important time is approaching - the time to take exams, on which the future of the student largely depends. What's new in the OGE in chemistry, what is the content of the exam paper, and is it even conceivable for an ordinary school student to score a hundred points? It's possible if you're prepared. Now let’s look at the structure of the work itself and you will see that nothing terrible or supernatural is asked there.
No changes are planned in the 2017 OGE compared to previous years. There are two exam models available. The choice is made by the executive body of the Russian Federation that carries out management in the field of education.
When choosing exam model 1, chemistry teachers cannot be present at the exam. Such a prohibition is naturally justified: the exam must be fair for all participants, and the possibility of assistance from people competent in the subject being taken must be completely excluded.
But when choosing model 2, one of the tasks of which will be to perform practical work, the preparation and issuance of laboratory kits is carried out by chemistry specialists. How to evaluate this work in this case? Experts evaluating the implementation are invited to a room specially designated for practical work.
The examination paper has tasks of three levels: basic (68% of all tasks), advanced (18%), complex (14%). Therefore, if the child has studied and understood the materials in the paragraphs, he will complete all the tasks. If this science is not very good for him or he is very confused during the exam due to stress, then at least he will complete the tasks at the basic level - and, as we see, there are more than half of them.
It seems to many parents and children that the purpose of the OGE is to “fail” the unfortunate student, to prove that he does not know or understand anything. That's why tricky questions and super-complicated tasks are invented. Nothing of the kind. The knowledge, abilities and skills acquired by studying the course of this subject over two years (!) - in the 8th and 9th grades - are tested. And note that chemistry is not a required subject. Why take it if you don’t understand anything at all? Are parents forcing them because they see their beloved child as a medical professional? Then moms and dads had to take responsibility for fulfilling their whims: within academic year additionally explain to the child the topics being studied, enroll him in reliable courses, hire tutors. The child must understand the subject that he himself (!) or with the help of caring parents chose for the examination. It would be good for moms and dads to remember what they want, insist and get their way, and the child will actually have to take an exam in a subject that he may simply hate.
It is wise to choose this subject for those who are passionate about chemistry and plan to continue their studies in the relevant specialized 10th grade or educational institution where these scores are among the passing scores. In this case, the exam will be an excellent test of the existing level of knowledge, a litmus test that makes it possible to objectively identify the strengths and weaknesses of the student’s preparation. And three months summer holidays will allow you to tighten up any gaps in knowledge.
The examination paper consists of two parts. As in previous years Each subsequent task is more difficult than the previous one, that is, the difficulty increases from task to task.
There are 22 tasks in total (in model 2 – 23), of which 19 have a short answer in the form of one number or a sequence of numbers (two or three numbers without spaces), and 3 (4) have a long answer. According to the level of complexity, the tasks are distributed as follows: 15 tasks test the presence of basic knowledge, four are tasks of increased complexity, and three (four in model 2) are of high complexity.
Part 2 is the most difficult and consists of three (examination model 1) or four (examination model 2) tasks of a high level of complexity with a detailed answer. The methods for performing them, depending on the exam model, are also different: in the first, task 22 requires a thought experiment and tests the ability to plan an experiment based on the properties of the proposed substances, write the signs of the occurrence of chemical reactions, create a molecular equation of reactions and an abbreviated ionic equation, and in the second model of the task 22 and 23 require you to perform actual laboratory work, demonstrate the ability to safely handle laboratory equipment and proposed chemicals, perform an experiment correctly, and record your findings.
The tasks test not only knowledge of theory, but also the demonstration of practical skills and abilities. Therefore, the preparation of the experimental, practical part should be given the utmost attention. close attention: thoroughly understand the sequence of laboratory work, understand the logic of the experiment, carefully study the instructions for its safe conduct. Actions must be logically justified, reasonable, and show an understanding of the purpose of the experiment.
The exam lasts 120 minutes (exam model 1) or 140 minutes (model 2). In practice, the optimal distribution of the allotted time was determined: each task of part 1 should be completed in approximately 3 to 8 minutes, tasks of part 2 - from 12 to 17 minutes for each. On laboratory work It is optimal to allocate approximately 20 minutes. As we see, there is not much time, so if the child has forgotten how to complete a task, he needs to move on to the next one. Then you can return to the problems that have become problematic and calmly think about them.
Part 1 is checked by experts or computers, and tasks 20-23, that is, part 2, are checked by a subject commission.
The maximum primary score is 34 or 38, depending on which examination model the graduate completed - first or second.
What tips (i.e., additional materials and equipment) can you expect during the exam itself? Provided periodic table chemical elements by D.I. Mendeleev, table of solubility of salts, acids and bases in water; electrochemical voltage series of metals. If used skillfully, these materials will help you pass with a high score. How? You just need to make it a rule to teach each paragraph based on them. Then for the graduate there will be not empty badges and letters, but real clues.
A non-programmable calculator is also allowed, which will significantly reduce the time of calculations and will eliminate errors in them or at least minimize their number.
To cope with the exam “excellently”, you need to put in a lot of effort. You can, of course, study on your own or with tutors, but in this case, preparation takes place without an optimal plan covering all sections of a given subject. It is better to trust a positively proven educational institution additional education, where such training has been successfully carried out for many years. Then all the material will be repeated, practiced on the demo version and exam versions of previous years under the guidance of experienced OGE and USE expert teachers.
Choice academic discipline To pass the exam is a very serious, crucial moment that requires comprehensive consideration. There must be a reasonable answer to the question: “Why am I going to take it? For what purpose? For what?" If there is none, it is probably better to choose a more understandable subject.