Manifold inorganic substances. Classification of inorganic substances. Systematic nomenclature.
Amphoteric and basic oxides, respectively, are:
1) FeO and CaO 2) Al2O3 and K2O 3) CO2 and NO 4) Fe2O3 and CO
Which element can form an acid oxide?
1) strontium 2) manganese 3) calcium 4) magnesium
Only acidic oxides are located in the series:
1) CO2, Mn2O7, SO2 2) Na2O, SiO2, Cr2O3 3) CrO, SQ2, CaO 4) CuO, Al2O3, FeO
4. Which of the following statements are true?
A. Basic oxides are the oxides to which bases correspond.
B. Only metals form basic oxides.
1) only A is true 2) only B is true
3) both statements are true 4) both statements are false
5. Metal oxides with an oxidation state of + 6 and higher are:
1) non-salt-forming 2) basic 3) amphoteric 4) acidic
6. Formulas of only acid oxides are written in the series:
1) Na2O, MgO, AI2O3 2) ZnO, SnO PbO2 3) CO2, SiO2, SO2 4) N2O, NO, CO
7. In which row is a substance located that is not an acid?
1) H2C2O4, HCN, HSCN 2) H2S, H2SO3, H2SO4
3) HC1O2, HC1O3, HC1O4 4) HNO3, HNO2, H3N
8. Only salt-forming oxides are in the series:
1) SeO3, SiO2, Cl2O7 2) N2O5, CO, SiO2 3) P2O5, NO, CO2 4) N2O3, Na2O, NO
9. In which series are the formulas of only non-metal hydroxides given?
1) H2SO4, HC1, HNO3 2) H3PO4, H2SiO3, HCIO4
3) H3BO3, HAlO2, H2S 4) HClO3, HBr, H3PO3
10. Which series contains the formulas of only the main oxides?
1) A12O3, MgO, Na2O 2) N2O, CuO, ZnO 3) N2O5, CaO, K2O 4) FeO, Li2O, BaO
11. An oxide is acidic, the formula of which is
1) CrO3 2) CaO 3) Al2O3 4) NO
12. Only dibasic acids are located in the series:
1) H2CO3, H3PO4, H3AsO3, HNO3 2) HC1O4, H2SeO4, HNO2, H3PO4
3) H2SO3, H2SiO, H2SO4, H2Cr04 4) HMnO4, H3AsO4, H2BeO4, H2ZnO2
13. Only acids are located in a row
1) НNO3, Ca(OH)2, NO2 2) KНСО3, Ba(HSO4)2, ZnOHCl3) HNO2, HNO3, CH3COOH 4) H2S, Na2SO3, SO2
14. A non-salt-forming oxide is
1) N2O5 2) NO2 3) N2O3 4) NO
15. An amphoteric oxide is
1) sulfur oxide (IV) 2) aluminum oxide 3) lithium oxide 4) phosphorus oxide (V)
16. In the list of salts, the formulas of which are: Mn(NO3)2, Mg(H2PO4)2, A12(SO4)3, (NH4)2HPO4, Na2SO3, (NH4)2S, BaSiO3
the number of medium salts is
1) 6 2) 5 3) 3 4) 4
17. In the list of salts, the formulas of which are:
Ag2CO3, NaHS, Cu(NO3)2, Fe2(SO4)3, Ca(HCO3)2, KH2PO4, KMnO4,
the number of acid salts is equal
1) 5 2) 2 3) 3 4) 4
18. Acid salts include
1) (NH4)2SO4 2) Fe(OH)SO4 3) KHSO4 4) HCOONa
19. Does not apply to amphoteric oxides
1) A12O3 2) BeO 3) FeO 4) ZnO
20. The formulas of acid oxide, acid and salt are respectively written in the series:
1) CaO, HC1, CaCl2, 2) SO2, H2S, NaHSO4
3) SO2, A12(SO4)3, HNO3 4) ZnO, Zn(OH)2, H2S
21. The formulas of the acid, base and basic oxide are sequentially indicated in the row:
1) Na2SiO3, KOH, K2O 2) Ca(OH)2, H2S, CaO3) HF, Mg(OH)2, BaO 4) H2SO4, Ba(OH)2, SiO2
22. An amphoteric oxide is
I) CaO 2) CrO3 3) FeO 4) Cr2O3
23. Which element can form an acid oxide?
1) strontium 2) manganese 3) calcium 4) magnesium
24. An acid is
1) NaH 2) SiH4 3) HI 4) NH3
25. Amphoterene oxide
1) boron 2) beryllium 3) cesium 4) silicon
26. Oxide is non-salt-forming
1) nitrogen(I) 2) chromium(II) 3) chlorine(III) 4) silicon(IV)
Attached files
Test "Classification of inorganic substances"
SPECIFICATION
There are 2 test options available, containing 6 basic level tasks with a choice of 1 answer option and 2 tasks higher level to correlate the names of substances and classes of substances; formulas of acids and formulas of their corresponding oxides. The work takes 15 minutes.
Option 1
Part A 1. In the list of substances A) BaO B) CaO C) Na 2 O D) SO 3 E) P 2 O 5 E) CO 2 acid oxides are 1) ABC 2) VGD 3) WHERE 4) BGE
2. In the list of acids A) nitrous B) orthophosphoric C) sulfuric D) hydrobromic E) nitric E) hydrosulfide strong acids are
1) IOP 2) ADE 3) ABD 4) BGE
3. Only salts are located in the series 1) HCOOH, (C 2 H 5) NH 2 Br, NaAl(SO 4) 2 2) NaH 2 PO 3, NaNO 3, KCLO 3
3) SrBr 2, AlOHCl 2, HI 4) CaCO 3, H 2 SO 4, KHS
4. The main oxide and main salt, respectively, are 1) CaO and CaOHCL 2) ZnO and NaHCO 3
3) SO 2 and FeOHCl 2 4) BaO and Na 2 S
5. The base and acid salt, respectively, are 1) HNO 3 and NH 4 Al(SO 4) 2 2) H 2 S and NaNO 3
3) H 2 SO 3 and CaOHCl 4) KOH and KHCO 3
6. In the list of substances A) Fe(OH) 2 B) NaHCO 3 C) H 2 O D) H 2 O 2 E) Ca(OH) 2 E) NaOH bases are
A) ABG 2) ADE 3) BGD 4) VDE
A) H 2 S O 3 1) SO 2 5) ClO 2
B) H 2 S O 4 2) SO 3 6) Cl 2 O 3
B) HMnO 4 3) MnO 3
D) HClO 2 4) Mn 2 O 7
NAME OF SUBSTANCE CLASS
A) iron (II) oxide 1) oxygen-free acid
B) carbonic acid 2) oxygen-containing acid
B) ammonium bicarbonate 3) medium salt
D) sodium hydroxide 4) acid salt
5)base
6) basic oxide
test “Classification of inorganic substances” Option 2
part A. 1. In the list of substances A) ZnO B) CuO C) FeO D) Fe 2 O 3 E) Cr 2 O 3 E) CrO the main oxides are 1) ABC 2) VGD 3) WHERE 4) BVE
2. In the list of acids A) carbonic B) nitric C) sulfuric D) hydrochloric D) acetic E) hydrosulphide weak acids are 1) VGD 2) ADE 3) ABD 4) BGE
3.Only dibasic acids are located in the series 1) H 2 CO 3, H 3 PO 4, H 3 AsO 3 2) HClO 4, H 2 SeO 4, HNO 2
3) H 2 S O 3, H 2 SiO 3, H 2 CrO 4 4) HMnO 4, H 2 BeO 2, H 2 ZnO 2
4. The main oxide and main salt, respectively, are 1) MgO and ZnOHCl 2) SiO 2 and FeOHCl 2
3) BeO and KHCO 3 4) CaO and K 2 S
5. The base and acid salt, respectively, are 1) Ba(OH) 2 and NH 4 Al(SO 4) 2 2) NaHS and LiOH
3)CaOHCl and NaHSO 3 4)KOH and KHCO 3
6. In the list of substances A) Mg(OH) 2 B) RbOH C) Be(OH) 2 D) Zn(OH) 2 E) Ba(OH) 2 E) Al(OH) 3 amphoteric hydroxides are 1) ABG 2 )ADE 3) VGE 4) BGD
Part B. B-1. Establish a correspondence between the formula of the acid and the oxide corresponding to this acid.
ACID FORMULA OXIDE FORMULA
A) H 2 CO 3 1) CO 2 5) Cl 2 O 5
B) HNO 2 2) CO 6) ClO 3
B) HNO 3 3) N 2 O 3
D) HClO 3 4) N 2 O 5
AT 2. Match the name of the substance with the class of compounds to which it belongs.
NAME OF SUBSTANCE CLASS
A) copper(II) hydroxide 1) oxygen-free acid
B) nitrous acid 2) oxygen-containing acid
B) ammonium nitrate 3) medium salt
D) copper (II) hydroxychloride 4) acid salt
5) base
6) basic salt
Evaluation criteria
For each correct answer in part A - 1 point; for the correct answer to part B - 2 points, answer with 1 error - 1 point. Total 10 points.
5-6 points "3"
7-8 points “4”
The purpose of the lesson. Summarize information about the classification of substances, the composition of the main classes of complex inorganic substances, consolidate students’ skills in classifying inorganic substances, carry out inductive and deductive generalizations in the process of classifying substances, and bring these skills to an optimal level.
Educational objectives:
- application of generalization of knowledge, skills and abilities in new conditions - creation of a problem situation;
- control and self-control of knowledge, skills and abilities using homework;
- be able to establish essential features that are the basis various classifications;
- be able to establish cause-and-effect relationships between “composition”, “chemical properties”, “class of substance”.
Developmental tasks:
- development of skills to compare, generalize, correctly formulate tasks and express thoughts;
- development logical thinking, attention and ability to work in a problem situation.
Educational tasks:
- developing students' cognitive interest in chemistry;
- nurturing such character qualities as persistence in achieving goals;
- nurturing interest and love for the subject through content educational material, ability to work in a team, mutual assistance, communication culture.
Equipment: presentation, digital educational resources: interactive “Classification of acids”, interactive “Classification of bases”, mini-laboratory, oxides of phosphorus, calcium, zinc, sodium hydroxide, copper, zinc, iron, nitric, sulfuric, phosphoric, silicic acids, salts
Lesson type: lesson of generalization and systematization of knowledge
Lesson Plan
1. Organizational moment.
2. Intermediate knowledge control.
3. Systematization and generalization of knowledge.
4. Consolidation.
5. Homework.
6. Reflection
DURING THE CLASSES
I. Organizational moment
Readiness for the lesson is checked, the lesson plan is distributed ( Annex 1
), instructions for performing laboratory work, observation sheet ( Appendix 2
), mini-laboratory, the stages of the lesson are announced.
Students’ work is organized at the initial stage of the lesson, and the teacher’s advice is remembered on how best to organize work in the lesson in order to preserve their health and the health of their classmates.
1. What is the most comfortable and healthy way to sit in class?
2. Why does the teacher ask for silence during class?
Teacher's opening speech. (Presentation
. Slides 1-3). Goal setting based on student knowledge. We are with you within school year learned what classes of inorganic compounds there are.
Please tell me what classes of substances we studied in previous lessons? (We have studied the classification of inorganic substances. And we know that there are oxides, acids, bases, salts).
And before moving on to the lesson itself. Let's think together about what we will do in class today.
What do you think is the purpose of our lesson?
(The purpose of the lesson is to summarize and systematize information about the classification of inorganic substances)
To do this, we need to remember the material that we have already covered in the topics “Oxides”, “Acids”, “Bases”, “Salts”. We will now take a test on these topics.
II. Intermediate control knowledge on the topics “Oxides”, “Acids”, “Bases”, “Salts” using the “Mutual Transfer of Tasks” technology
Students complete the test in groups of 2 or 4 people - 5 minutes ( Appendix 2
). After students complete the test, they must grade themselves, check their neighbor’s work, and grade their deskmate. The teacher asks the class to raise their hands to see who wrote the test with 5 or 4 points. Pre-prepared test answers are opened for self-test on a closed board or on a media projector screen.
For a media projector, the right options (Slide 4)
Test on the topic “Classification of inorganic substances”
Execution time – 5 minutes.
Arrange the coefficients in the reaction schemes, indicate the type of chemical reaction based on the “number and composition of starting substances and reaction products”, determine a simple or complex substance, if the substance is complex, determine the class of the substance
III. Learning new educational material
Learning objective: consolidate knowledge, skills in the classification of inorganic substances.
Deducing the purpose of this stage of the lesson with the help of students
As a result of this lesson, we must directly consider the division of oxides, acids, bases, salts into groups, the characteristics that form the basis of classifications. During the lesson, we must generalize, systematize the characteristics of classifications, and consolidate these skills.
Consider the “Classification of Substances” diagram.
My goal in this lesson is to tell you about this, to help you remember these classifications, and we will continue to learn to determine not only the classes of substances, but also the division into groups within the class.
Today these parts of the lesson will be held in the form of a game. You will have 4 teachers. They will generalize and systematize each one into a specific class of substances. They have the right to ask you questions and give you grades at the end of the lesson. After explaining your new teachers. We will check how you remember the classification of substances and find out who our “coolest” chemist is, and determine who our “coolest” teacher is.
The main provisions of the educational material that you must master today.
1. Classification of oxides. Explaining the material by a previously prepared student.
Updating knowledge: Frontal survey. What are oxides? (Oxides are complex substances consisting of two elements, one of which is oxygen with an oxidation state of 2)
Slides 5-7
Oxides are divided into non-salt-forming– they do not react with acids or alkalis and do not form salts. These are only four oxides: CO, SiO, N 2 O, NO
The remaining oxides are salt-forming. Among them there are two groups. Acidic oxides, these oxides correspond to acids, and, as a rule, these are oxides of non-metals, or metals of secondary subgroups in the highest oxidation state. Second group basic oxides– these are metal oxides in the oxidation state +1, +2, +3
Filling out the table based on student knowledge
Fastening:
1. Why are non-salt-forming oxides called so?
2. Classification of acids
Updating knowledge: Frontal survey. What acids do you know?
The teacher demonstrates samples of acids, the student at the blackboard uses tables on slides to explain what acids are and what groups they are divided into, the class works together with the board or independently. In the textbook, page 210, table 10.
Acids are complex substances consisting of positively charged hydrogen ions and negatively charged acidic residues
Fastening:
1. What is a tribasic acid?
3. Classification of bases
Updating knowledge: Frontal survey. What are alkalis?
The teacher demonstrates examples of bases, the student at the blackboard explains with the help of tables on slides what bases are and what groups they are divided into, the class works together with the board or independently. In the textbook, page 215, table 11.
Bases are complex substances consisting of positively charged metal ions and negatively charged hydroxide ions
Fastening:
1. What are alkalis?
4. Classification of salts
Updating knowledge: Frontal survey. Give examples of salts?
Slides 11, 12
The teacher demonstrates samples of salts, the student at the blackboard uses tables on slides to explain what salts are and what groups they are divided into, the class works together with the board or independently.
Salts are complex substances consisting of positively charged metal ions and negatively charged acidic residues
Reinforcement, frontal survey:
1. What are acid salts?
2. How does the name of acidic salts change compared to average ones?
IV. Reinforcing educational material
Completion of Laboratory work “Classification of inorganic substances” ( Appendix 2 ), work in groups
Organization of class work.
The class is divided into small groups of 4 people, for example, according to the speed of work or according to the wishes of the students.
Definition of the “coolest” chemist, the most “cool” teacher.
Frontal survey: if there is time.
Which class of substances did you find most difficult and why?
In all groups, students are given instructions for laboratory work.
Using the DOR (additional material if there is time)
Interactive. Classification of Acids Exercise 1
Interactive. Classification of Grounds Exercise 2
V. Homework
Presented in worksheets.
Goal: to consolidate the skills of classifying substances to an optimal level, to be able to apply the acquired knowledge in a new situation (problem question)
A problematic question is formulated for homework, grades are given for the lesson
Problematic question. Why are both acids and bases grouped as hydroxides? What do they have in common and how are they different?
Paragraphs 38-41, write 2 typical reaction equations for each class of substances Complete the table of oxides
You can also make your own homework, optionally. Come up with your own exercises or take them from other sources.
VI. Reflection
Frontal discussion of the lesson results with the class.
Did you like the lesson? Evaluate how your knowledge has changed during the lesson.
Express your impressions with a drawing.
Cheerful face - I liked the lesson, my knowledge has increased.
serious face - it’s hard to say, but I learned and remembered something new
and a dissatisfied face - I didn’t like the lesson, didn’t learn anything
Bibliography
1. Chemistry 8, 9 grade. Multimedia supplement to the textbook by O.S. Gabrielyan. Electronic educational publication. LLC "Drofa" 2011.
2. Planning for the textbook “Chemistry”, grades 8, 9, Gabrielyan O.S. Unified collection of digital educational resources
3. Gabrielyan O.S. Chemistry 8th grade. Textbook, M.: Bustard, 2011.
