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1) Dictation - page 4
2) FCE - Listetning - test 2 - ссылка на сайте блога 18.09.2019 - каждый тест 40 мин.
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Сегодня мы работаем по следующему плану:
1) Dictation - page 4
2) FCE - Listetning - test 2 - ссылка на сайте блога 18.09.2019 - каждый тест 40 мин.
3) Text Book - reading/translating/tests - https://www.ck12.org/book/CK-12-Chemistry-Intermediate/section/11.0/
Dictation -- 73%
ОтветитьУдалитьDictation -70%
ОтветитьУдалитьTranslation
ОтветитьУдалитьJames J. Ward was a forty years old successful buisnessman and a very unhappy person. For forty years he has been vainly trying to solve a problem of his personality, and this problem became more disusterous through the years. Two different persons lived in his physical body, and there was a gap of thousands of years between them. He studied the problem of personality dissociation more carefuly than anyone of specialists in this complex and enigmatic field of psycology. He didn't find a case, that looks like his in a literature. Even in the stories of novelists, that have a rich emagination, he didn't find anything similar. He wasn't nither doctor Jekyll nor Mr. Hyde, nor that unfortunate young man from the Kipling's "Greatest Story in the World." Both personalities were mixed so highly that they were awared of each other existance all the time.
Этот комментарий был удален автором.
ОтветитьУдалитьJames G.Word was a forty years old, he was a successful businessman, and very unhappy man. For forty years, he tried in vain to solve the problem of his own personality, and this problem became more and more a terrible tragedy every year. It was as if there were two people in his body, and from the point of view of time they were separated by a gap of several thousand years or about that.He studied the problem of personality split more thoroughly than any of the specialists in this confused and mysterious field of psychology. In literature, he did not find a case similar to his own. Even in the descriptions of fiction writers, characterized by a violent flight of imagination, he found nothing similar. He was neither Dr. Jekyll, nor Mr. Hyde, nor that unhappy young man from Kipling's Greatest History in the World. Both personalities in him were so blended that all the time each knew of the other's neighborhood.
УдалитьListening - 70%
ОтветитьУдалитьListening FCE-70%
ОтветитьУдалитьDictation 93%
ОтветитьУдалитьАлимханова
УдалитьListening FCE
Удалить90%
James G. Ward was forty years of age, a successful business man, and very unhappy man. For forty years he had vainly tried to solve a problem that was really himself and that with increasing years became more and more a terrible disaster. In himself he was two men, and, chronologically speaking, these men were several thousand years or so apart. He had studied the question of dual personality probably more carefully than any of the leading specialists in that complicated and mysterious psychological field. He was a different case from any that had been recorded. Even the most wild flights of the fiction-writers had not quite hit upon him. He was not a Dr. Jekyll and Mr. Hyde, not was he like the unfortunate young man in Kipling's "The greatest story in the World." His two personalities were so mixed that they were practically aware of themselves and of each other all the time.
УдалитьDictation 88%
ОтветитьУдалитьDictation 78%
ОтветитьУдалитьDictation - 95%
ОтветитьУдалитьDictation 86%
ОтветитьУдалитьListening FCE 83%
ОтветитьУдалитьFCE 83%
ОтветитьУдалитьListening FCE 80%
ОтветитьУдалитьJames J.Warden just got 40 years old,he was a successful businessman and a very unhappy man.During these 40 years he was trying to solve the problem with his own personality ,and every year this problem became even a worse misfortune.There were two people in his body,and they were separated in approximately thousands of years.He had studied the problem of dual personality more deeply than any specialist in this mysterious field of psychology.He couldn't find anything similar in literature.Even in fiction discribtions that are famous for their wild fantasies, he couldn't find anything similar.He was neither Doctor Jekill,nor Mr.Hide,nor that unhappy young man from Kipling's "The greatest story in the world".Both the personalities were blended together and each of them knew about the other.
ОтветитьУдалитьListening FCE 67%
ОтветитьУдалитьTest 11.1
ОтветитьУдалить1.a.reactants :H2O,CO2
products:glucose,oxygen
b.product :magnesium oxide
reactants:magnesium,oxygen gas
2.Unlike in a math equation, a chemical equation does not use an equal sign. Instead the arrow is called a yield sign and so the equation is described as “reactants yield products.”
3.a.Manganese dioxide catalyzes the decomposition of hydrogen peroxide to water and oxygen.
b.Thermal decomposition of copper carbonate leads to the forming of copper oxide and carbon dioxide.
c.Cesium reacts with water forming cesium hydroxide and hydrogen gas.
4.a.10 b.2,6 c.8,16,1,4 d.4,8,4 e.3,9,27 f.6,2,8
6.a.2KClO3 → 2KCl + 3O2
b.Ca(OH)2 + 2HBr → CaBr2 + 2H2O
c.2C4H10 + 26O2 → 8CO2 + 10H2O
d.2NH3 + 3CuO → 3Cu + N2 + 3H2O
7.a.Na2CO3= Na2O+CO2
b.P4O10+H2O=H3PO4
c.Pb+N2=Pb3N2
d.NH4CO3=NH3+H2O+CO2
8.a.BaO+H2O=Ba(OH)2(aq.)
b.Li3PO4(aq)+Fe(NO3)2 aq = LiNO3 aq +Fe3(PO4)2(s)
c.Al(m.)+ZnCl2 aq =AlCl3 aq+ Zn(s)
d.Fe2O3 s+CO g =Fe+CO2 g
9.a.4K+O2=2K2O
b.2Ag2O=4Ag+O2
c.2NaCl+F2=2NaF+ Cl2
Test 11.2
ОтветитьУдалить1.a.AB + CD → AD + CB
b.AB → A + B
c.A + BC → AC + B
d.A + B → AB
2.double replacement reaction
3.A combustion reaction is a reaction in which a substance reactants with oxygen gas, releasing energy in the form of light and heat. Combustion reactions must involve O2 as one reactant. The combustion of hydrogen gas produces water vapor .
4.in the upper part of the table
5.a.double-replacement reaction
b.combination reaction
c.double-replacement reaction,combustion
d. decomposition reaction
e.double-replacement reaction
6.a.Sr(s) + S(s) →SrS
b.2Zn(s) + O2(g) →2ZnO
c.Li2O(s) + H2O(l) →2LiOH
7.a.2Na3N= 6Na+N2
b.SnCO3=2SnO+CO2
c.2NCl3=N2+3Cl2
d.Mg(OH)2=MgO+H2O
8.a.Cl2(g) + 2NaF(aq) →2NaCl+F2
b.Ca+2H2O= Ca(OH)2+H2
c.2Pt(s) + 2H2SO4(aq) →Pt2SO4+SO2+2H2O
d.2Al(s) + 3NiBr2(aq) →2AlBr3+3Ni
9.a.3Ca(NO3)2(aq) + 2K3PO4(aq)=6KNO3+Ca3(PO4)2
b.2HI(aq) + Mg(OH)2(aq) →2H2O+MgI2
c.FeS(s) + 2HCl(aq) →FeCl2+H2S
d.CuBr2(aq) + 2KOH(aq)=Cu(OH)2+2KBr
10.a.C2H2+2,5O2=2CO2+H2O
b.CH3COOH+2O2=2CO2+2H2O
c.C6H14+9,5O2=6CO2+7H2O
James G.Word was a forty years old, he was a successful businessman and very unhappy man. During forty years, he tried in vain to solve the problem of his own personality, and this problem became more and more a terrible tragedy every year. His body shell consisted of two personalities, and there was a gap of thousands of years between them. He studied the problem of personality dissociation more carefuly than anyone of specialists in this complex and enigmatic field of psycology. He couldn’t find the same situation in literature. Even in the stories of novelists, that have a rich emagination, he didn't find anything same. He wasn’t t a Dr. Jekyll and Mr. Hyde, not like the unfortunate young man in Kipling's "The greatest story in the World." Both personalities in him were so blended that all the time each knew of the other's neighborhood.
ОтветитьУдалитьАлимханова
ОтветитьУдалитьTest 11.1
1. a. reactants: H2O, CO2
products: glucose, oxygen
b. product: magnesium oxide
reactants: magnesium, oxygen gas
2. Unlike in a math equation, a chemical equation does not use an equal sign. Instead the arrow is called a yield sign and so the equation is described as “reactants yield products.”
3. a. Manganese dioxide catalyzes the decomposition of hydrogen peroxide to water and oxygen.
b. Thermal decomposition of copper carbonate leads to the forming of copper oxide and carbon dioxide.
c. Cesium reacts with water forming cesium hydroxide and hydrogen gas.
4. a. 10
b. 2,6
c. 8,16,1,4
d. 4,8,4
e. 3,9,27
f. 6,2,8
5. -
6.a. 2KClO3 = 2KCl + 3O2
b. Ca(OH)2 + 2HBr = CaBr2 + 2H2O
c. 2C4H10 + 26O2 = 8CO2 + 10H2O
d. 2NH3 + 3CuO = 3Cu + N2 + 3H2O
7. a. Na2CO3 = Na2O + CO2
b. P4O10+ 6H2O = 4H3PO4
c. 3Pb+N2 = Pb3N2
d. (NH4)2CO3 = 2NH3 + H2O + CO2
8. a. BaO + H2O = Ba(OH)2 (aq.)
b. 2Li3PO4 (aq.) + 3Fe(NO3)2 (aq.) = 6LiNO3 (aq.) + Fe3(PO4)2 (s.)
c. 2Al (m.) + 3ZnCl2 (aq.) = 2AlCl3 (aq.) + 3Zn (s.)
d. Fe2O3 (s.) + 3CO (g.) = 2Fe + 3CO2 (g.)
9. a. 4K+O2 = 2K2O
b. 2Ag2O = 4Ag + O2
c. 2NaCl + F2 = 2NaF + Cl2
Алимханова
УдалитьTest 11.2
1. a. AB + CD → AD + CB
b. AB → A + B
c. A + BC → AC + B
d. A + B → AB
2. Double replacement reaction
3. A combustion reaction is a reaction in which a substance reactants with oxygen gas, releasing energy in the form of light and heat. Combustion reactions must involve O2 as one reactant. The combustion of hydrogen gas produces water vapor.
4. in the upper part of the table
5. a. double-replacement reaction
b. combination reaction
c. double-replacement reaction, combustion
d. decomposition reaction
e. double-replacement reaction
6. a. Sr (s) + S (s) = SrS
b. 2Zn (s) + O2 (g) = 2ZnO
c. Li2O (s) + H2O (l) = 2LiOH
7. a. 2Na3N = 6Na+N2
b. SnCO3=2SnO + CO2
c. 2NCl3=N2 + 3Cl2
d. Mg(OH)2=MgO + H2O
8. a. Cl2 (g) + 2NaF (aq) = 2NaCl + F2
b. Ca+2H2O = Ca(OH)2 + H2
c. Pt(s) + H2SO4(aq) = NR
d. 2Al (s) + 3NiBr2 (aq) = 2AlBr3 + 3Ni
9. a. 3Ca(NO3)2 (aq) + 2K3PO4 (aq) = 6KNO3 + Ca3(PO4)2
b. 2HI (aq) + Mg(OH)2 (aq) = 2H2O + MgI2
c. FeS (s) + 2HCl (aq) = FeCl2 + H2S
d. CuBr2 (aq) + 2KOH (aq) = Cu(OH)2 + 2KBr
10. a. 2C2H2 + 5O2 = 4CO2 + 2H2O
b. CH3COOH + 2O2 = 2CO2 + 2H2O
c. 2C6H14 + 18O2 = 12CO2 + 14H2O
Test 11.1
ОтветитьУдалить1)a.reactants :H2O,CO2
products:glucose,oxygen
b.reactants:magnesium,oxygen gas
product :magnesium oxide
2)a chemical equation does not use an equal sign. Instead the arrow is called a yield sign and so the equation is described as “reactants yield products.”
3)a.Manganese dioxide catalyzes the decomposition of hydrogen peroxide to water and oxygen.
b.Thermal decomposition of copper carbonate leads to the forming of copper oxide and carbon dioxide.
c.Cesium reacts with water forming cesium hydroxide and hydrogen gas.
4)a.10 b.2,6 c.8,16,1,4 d.4,8,4 e.3,9,27 f.6,2,8
6)a.2KClO3 → 2KCl + 3O2
b.Ca(OH)2 + 2HBr → CaBr2 + 2H2O
c.2C4H10 + 26O2 → 8CO2 + 10H2O
d.2NH3 + 3CuO → 3Cu + N2 + 3H2O
7).a.Na2CO3= Na2O+CO2
b.P4O10+H2O=H3PO4
c.Pb+N2=Pb3N2
d.NH4CO3=NH3+H2O+CO2
8)a.BaO+H2O=Ba(OH)2(aq.)
b.Li3PO4(aq)+Fe(NO3)2 aq = LiNO3 aq +Fe3(PO4)2(s)
c.Al(m.)+ZnCl2 aq =AlCl3 aq+ Zn(s)
d.Fe2O3 s+CO g =Fe+CO2 g
9)a.4K+O2=2K2O
b.2Ag2O=4Ag+O2
c.2NaCl+F2=2NaF+ Cl2
Test 11.2
Удалить1)a. AB + CD → AD + CB
b. AB → A + B
c. A + BC → AC + B
d. A + B → AB
2)double displacement reaction.
3)A combustion reaction is a reaction in which a substance reactants with oxygen gas, releasing energy in the form of light and heat. Combustion reactions must involve O2 as one reactant. The combustion of hydrogen gas produces water vapor .
4)The most reactive elements on the periodic table of elements are located in the furthest left column. Of these alkali metals, the most reactive elements in this group are Cesium and francium.
5)a.double-replacement reaction
b.combination reaction
c.double-replacement reaction,combustion
d. decomposition reaction
e.double-replacement reaction
6).a.Sr(s) + S(s) →SrS
b.2Zn(s) + O2(g) →2ZnO
c.Li2O(s) + H2O(l) →2LiOH
7)a.2Na3N= 6Na+N2
b.SnCO3=2SnO+CO2
c.2NCl3=N2+3Cl2
d.Mg(OH)2=MgO+H2O
8)a.Cl2(g) + 2NaF(aq) →2NaCl+F2
b.Ca+2H2O= Ca(OH)2+H2
c.2Pt(s) + 2H2SO4(aq) →Pt2SO4+SO2+2H2O
d.2Al(s) + 3NiBr2(aq) →2AlBr3+3Ni
9)a.3Ca(NO3)2(aq) + 2K3PO4(aq)=6KNO3+Ca3(PO4)2
b.2HI(aq) + Mg(OH)2(aq) →2H2O+MgI2
c.FeS(s) + 2HCl(aq) →FeCl2+H2S
d.CuBr2(aq) + 2KOH(aq)=Cu(OH)2+2KBr
10)a.C2H2+2,5O2=2CO2+H2O
b.CH3COOH+2O2=2CO2+2H2O
c.C6H14+9,5O2=6CO2+7H2O
11.1 Test
ОтветитьУдалить1. A) reactants: water, carbon dioxide;
products: glucose, oxygen.
B) products: magnesium oxide;
reactants: magnesium, oxygen gas.
2. Unlike in a math equation, a chemical equation does not use an equal sign. Instead the arrow is called a yield sign and so the equation is described as “reactants yield products.”
3. A) Manganese dioxide catalyzes the decomposition of hydrogen peroxide to water and oxygen.
B) Thermal decomposition of copper carbonate leads to the forming of copper oxide and carbon dioxide.
C) Cesium reacts with water forming cesium hydroxide and hydrogen gas.
4. a) 10; b) 2,6; c) 8,16,1,4; d) 4,8,4; e) 3,9,27; f) 6,2,8.
5.
6. a) 2KClO3 = 2KCl + 3O2 ;
b) Ca(OH)2 + 2HBr = CaBr2 + 2H2O ;
c) 2C4H10 + 26O2 = 8CO2 + 10H2O ;
d) 2NH3 + 3CuO = 3Cu + N2 + 3H2O .
7. a) Na2CO3 = Na2O + CO2 ;
b) P4O10+ 6H2O = 4H3PO4 ;
c) 3Pb+N2 = Pb3N2 ;
d) (NH4)2CO3 = 2NH3 + H2O + CO2 .
8. a) BaO + H2O = Ba(OH)2 (aq.);
b) 2Li3PO4 (aq.) + 3Fe(NO3)2 (aq.) = 6LiNO3 (aq.) + Fe3(PO4)2 (s.);
c) 2Al (m.) + 3ZnCl2 (aq.) = 2AlCl3 (aq.) + 3Zn (s.);
d) Fe2O3 (s.) + 3CO (g.) = 2Fe + 3CO2 (g.).
9. a) 4K+O2 = 2K2O ;
b) 2Ag2O = 4Ag + O2 ;
c) 2NaCl + F2 = 2NaF + Cl2 .
11.2 Test
Удалить1. a) AB + CD → AD + CB ;
b) AB → A + B ;
c) A + BC → AC + B ;
d) A + B → AB .
2. Double replacement reaction generally takes place only between substances in aqueous solution.
3. A combustion reaction is a reaction in which a substance reactants with oxygen gas, releasing energy in the form of light and heat. Combustion reactions must involve oxygen as one reactant. The combustion of hydrogen gas produces water vapor.
4. The most reactive elements located in the upper part of the table.
5. a) double-replacement reaction;
b) combination reaction;
c) double-replacement reaction,combustion;
d) decomposition reaction;
e) double-replacement reaction.
6. a) Sr(s)+S(s) →SrS ;
b) 2Zn(s)+O2(g) →2ZnO ;
c) Li2O(s)+H2O(l) →2LiOH .
7. a) 2Na3N= 6Na+N2 ;
b) SnCO3=2SnO+CO2 ;
c) 2NCl3=N2+3Cl2 ;
d) Mg(OH)2=MgO+H2O .
8. a)Cl2(g)+2NaF(aq) →2NaCl+F2 ;
b) Ca+2H2O= Ca(OH)2+H2 ;
c) 2Pt(s)+2H2SO4(aq) →Pt2SO4+SO2+2H2O ;
d) 2Al(s)+3NiBr2(aq) →2AlBr3+3Ni .
9. a) 3Ca(NO3)2(aq)+2K3PO4(aq)=6KNO3+Ca3(PO4)2 ;
b) 2HI(aq)+Mg(OH)2(aq) →2H2O+MgI2 ;
c) FeS(s)+2HCl(aq) →FeCl2+H2S ;
d) CuBr2(aq)+2KOH(aq)=Cu(OH)2+2KBr .
10. a) 2C2H2+5O2=4CO2+2H2O ;
b) CH3COOH+2O2=2CO2+2H2O ;
c) 2C6H14+19O2=12CO2+14H2O .
Test 11.2
ОтветитьУдалить1)a. AB + CD → AD + CB
b. AB → A + B
c. A + BC → AC + B
d. A + B → AB
2)double displacement reaction.
3)A combustion reaction is a reaction in which a substance reactants with oxygen gas, releasing energy in the form of light and heat. Combustion reactions must involve O2 as one reactant. The combustion of hydrogen gas produces water vapor .
4)The most reactive elements on the periodic table of elements are located in the furthest left column. Of these alkali metals, the most reactive elements in this group are Cesium and francium.
5)a.double-replacement reaction
b.combination reaction
c.double-replacement reaction,
d. decomposition reaction
e.double-replacement reaction
6).a.Sr(s) + S(s) →SrS
b.2Zn(s) + O2(g) →2ZnO
c.Li2O(s) + H2O(l) →2LiOH
7)a.2Na3N= 6Na+N2
b.SnCO3=2SnO+CO2
c.2NCl3=N2+3Cl2
d.Mg(OH)2=MgO+H2O
8)a.Cl2(g) + 2NaF(aq) →2NaCl+F2
b.Ca+2H2O= Ca(OH)2+H2
c.2Pt(s) + 2H2SO4(aq) →Pt2SO4+SO2+2H2O
d.2Al(s) + 3NiBr2(aq) →2AlBr3+3Ni
9)a.3Ca(NO3)2(aq) + 2K3PO4(aq)=6KNO3+Ca3(PO4)2
b.2HI(aq) + Mg(OH)2(aq) →2H2O+MgI2
c.FeS(s) + 2HCl(aq) →FeCl2+H2S
d.CuBr2(aq) + 2KOH(aq)=Cu(OH)2+2KBr
10)a.C2H2+2,5O2=2CO2+H2O
b.CH3COOH+2O2=2CO2+2H2O
c.C6H14+9,5O2=6CO2+7H2O
Paper 4 Listening
ОтветитьУдалитьPart1
1A
2C
3A
4B
5B
^A
7C
8B
9metalroof
10 tape
11 candies
12 tracks
13 plane
14 sugar cane
15 rats
16 heaters
17 1000
18 inside
Part 3
19 C
20 E
21 A
22 F
23 D
Part 4
24 B\
25 C
26 B
27 B
28 A
29 C
30 B
87%
Chemical reactions can be recognized by careful observations. The production of a precipitate, a color change, evolution of a gas, or a transfer of energy are all clues that a chemical change is occurring. In the picture above, a copper sheet has been placed into a colorless solution of silver nitrate. The reaction slowly produces silver metal, which clings to the surface of the copper sheet. The other product of the reaction is aqueous copper(II) nitrate, which is blue in color. In this chapter, we begin to advance beyond simply recognizing chemical reactions by writing chemical equations that describe how the reactants in a given reaction are converted into products. Classifying chemical reactions into several distinctive categories will aid you in predicting the products of many different chemical reactions.
ОтветитьУдалитьTranclating
Химические реакции можно распознать путем тщательных наблюдений. Образование осадка, изменение цвета, выделение газа или передача энергии-все это указывает на то, что происходит химическое изменение. На рисунке выше медный лист помещен в бесцветный раствор нитрата серебра. Реакция медленно производит серебряный металл, который цепляется к поверхности медного листа. Другим продуктом реакции является водный нитрат меди (II), который имеет синий цвет. В этой главе мы начинаем продвигаться дальше простого распознавания химических реакций, записывая химические уравнения, описывающие, как реагенты в данной реакции превращаются в продукты. Классификация химических реакций на несколько отличительных категорий поможет вам в прогнозировании продуктов многих различных химических реакций.
James G. Ward was forty years of age, a successful business man, and very unhappy. For forty years he had vainly tried to solve a problem that was really himself and that with increasing years became more and more a woeful affliction. In himself he was two men, and, orth chronologically speaking, these men were several thousand years or so аpart. He had studied the question of dual personality probably more profoundly than any half dozen of the leading specialists in that intricate and mysterious psychological field. In himself he was a different case from any that had been recorded. Even the most fanciful flights of the fiction-writers had not quite hit upon him. He was not a Dr. Jekyll and Mr. Hyde, nor was he like the unfortunate young man in Kipling's "Greatest Story in the World." His two personalities were so mixed that they were practically aware of themselves and of each other all the time.
ОтветитьУдалитьВахрушева Дарья
Test 11.1
ОтветитьУдалить1)a.reactants :H2O,CO2
products:glucose,oxygen
b.reactants:magnesium,oxygen gas
product :magnesium oxide
2)a chemical equation does not use an equal sign. Instead the arrow is called a yield sign and so the equation is described as “reactants yield products.”
3)a.Manganese dioxide catalyzes the decomposition of hydrogen peroxide to water and oxygen.
b.Thermal decomposition of copper carbonate leads to the forming of copper oxide and carbon dioxide.
c.Cesium reacts with water forming cesium hydroxide and hydrogen gas.
4)a.10 b.2,6 c.8,16,1,4 d.4,8,4 e.3,9,27 f.6,2,8
6)a.2KClO3 → 2KCl + 3O2
b.Ca(OH)2 + 2HBr → CaBr2 + 2H2O
c.2C4H10 + 26O2 → 8CO2 + 10H2O
d.2NH3 + 3CuO → 3Cu + N2 + 3H2O
7).a.Na2CO3= Na2O+CO2
b.P4O10+H2O=H3PO4
c.Pb+N2=Pb3N2
d.NH4CO3=NH3+H2O+CO2
8)a.BaO+H2O=Ba(OH)2(aq.)
b.Li3PO4(aq)+Fe(NO3)2 aq = LiNO3 aq +Fe3(PO4)2(s)
c.Al(m.)+ZnCl2 aq =AlCl3 aq+ Zn(s)
d.Fe2O3 s+CO g =Fe+CO2 g
9)a.4K+O2=2K2O
b.2Ag2O=4Ag+O2
c.2NaCl+F2=2NaF+ Cl2
Test 11.2
ОтветитьУдалить1.
AB + CD → AD + CB
AB → A + B
A + BC → AC + B
A + B → AB
2.double replacement reaction
3.A combustion reaction is a reaction in which a substance reactants with oxygen gas, releasing energy in the form of light and heat. Combustion reactions must involve O2 as one reactant. The combustion of hydrogen gas produces water vapor .
4.in the upper part of the table
5.a.double-replacement reaction
b.combination reaction
c.double-replacement reaction,combustion
d. decomposition reaction
e.double-replacement reaction
6.a.Sr(s) + S(s) →SrS
b.2Zn(s) + O2(g) →2ZnO
c.Li2O(s) + H2O(l) →2LiOH
7.a.2Na3N= 6Na+N2
b.SnCO3=2SnO+CO2
c.2NCl3=N2+3Cl2
d.Mg(OH)2=MgO+H2O
8.a.Cl2(g) + 2NaF(aq) →2NaCl+F2
b.Ca+2H2O= Ca(OH)2+H2
c.2Pt(s) + 2H2SO4(aq) →Pt2SO4+SO2+2H2O
d.2Al(s) + 3NiBr2(aq) →2AlBr3+3Ni
9.a.3Ca(NO3)2(aq) + 2K3PO4(aq)=6KNO3+Ca3(PO4)2
b.2HI(aq) + Mg(OH)2(aq) →2H2O+MgI2
c.FeS(s) + 2HCl(aq) →FeCl2+H2S
d.CuBr2(aq) + 2KOH(aq)=Cu(OH)2+2KBr
10.a.C2H2+2,5O2=2CO2+H2O
b.CH3COOH+2O2=2CO2+2H2O
c.C6H14+9,5O2=6CO2+7H2O
James J. Ward was forty years of age, he was a successful businessman and very miserable person. He had been trying to decide the problem was getting more horrible misfortune year by year. In himself were existed two persons, and in terms of time there were thousands years between them. He had studied the problem of split personality more carefully then any of specialists in this complex and mysterious branch of psychology. He didn’t find same occasions in literature. Even the belletrist’s works had no information about it. He wasn’t Dr. Jekyll, or Mr. Hyde, or the pour young man from “The greatest story in the world” by Kipling. The both personalities in him were so close to each other, that every time one of them knew about the existence of the another.
ОтветитьУдалитьReading
ОтветитьУдалитьTest 11.1
1. A. reactants: water, CO2
products: glucose, oxygen
B. reactants: magnesium, oxygen gas
products: magnesium oxide
2. Unlike in a math equation, a chemical equation does not use an equal sign. Instead the arrow is called a yield sign and so the equation is described as “reactants yield products.”
3. A. Manganese dioxide catalyzes the decomposition of hydrogen peroxide to water and oxygen.
B. Heating of copper carbonate leads to the forming of copper oxide and carbon dioxide.
C. Cesium reacts with water forming cesium hydroxide and hydrogen gas.
4. A. 10 Br
B. 2 N 6 H
C. 8 N 32 H 4 S 16 O
D. 4 C 8 H 4 O
E. 3 Fe 9 N 27 O
F. 6 K 2 P 8 O
6. A. 2KClO3 → 2KCl + 3O2
B. Ca(OH)2 + 2HBr → CaBr2 + 2H2O
C. 2C4H10 + 26O2 → 8CO2 + 10H2O
D. 2NH3 + 3CuO → 3Cu + N2 + 3H2O
7. A. Na2CO3 → Na2O + CO2
B. P4O10+ 6H2O → 4H3PO4
C. 3Pb+N2 → Pb3N2
D. (NH4)2CO3 → 2NH3 + H2O + CO2
8. A. BaO + H2O → Ba(OH)2 (aq)
B. 2Li3PO4 (aq) + 3Fe(NO3)2 (aq) → 6LiNO3 (aq) + Fe3(PO4)2 (s)
C. 2Al (m) + 3ZnCl2 (aq) → 2AlCl3 (aq) + 3Zn (s)
D. Fe2O3 (s) + 3CO (g) → 2Fe + 3CO2 (g)
9. A. K + O2 ---> KO2
B. 2Ag2O --t--> 4Ag + O2
C. 2NaCl + F2 ---> 2NaF + Cl2
Test 11.2
Удалить1. A. AB + CD → AD + CB
B. AB → A + B
C. A + BC → AC + B
D. A + B → AB
2. A double replacement reaction.
3. A combustion reaction is a reaction in which a substance reactants with oxygen gas, releasing energy in the form of light and heat. Combustion reactions must involve O2 as one reactant.
4. The most reactive elements located in the upper part of the periodic table.
5. A. double-replacement reaction
B. combination reaction
C. double-replacement reaction, combustion
D. decomposition reaction
E. double-replacement reaction
6. A.Sr(s) + S(s) →SrS(s)
B. 2Zn(s) + O2(g) →2ZnO(s)
C. Li2O(s) + H2O(l) →2LiOH(aq)
7. A. 2Na3N --> 6Na + N2
B. SnCO3 --> 2SnO + CO2
C. 2NCl3 --> N2 + 3Cl2
D. Mg(OH)2 --> MgO + H2O
8. A. Cl2(g) + 2NaF(aq) --> 2NaCl(aq) + F2(g)
B. Ca(m) + 2H2O(l) --> Ca(OH)2 + H2(g)
C. 2Pt(s) + 2H2SO4(aq) --> Pt2SO4(aq) + SO2(g) + 2H2O(l)
D. 2Al(s) + 3NiBr2(aq) --> 2AlBr3(aq) + 3Ni(m)
9. A. 3Ca(NO3)2(aq) + 2K3PO4(aq) → 6KNO3(aq) + Ca3(PO4)2(s)
B. 2HI(aq) + Mg(OH)2(aq) →2H2O+MgI2
C. FeS(s) + 2HCl(aq) → FeCl2(aq) + H2S(g)
D. CuBr2(aq) + 2KOH(aq) → Cu(OH)2(s) + 2KBr(aq)
10. A. 2C2H2 + 5O2 → 4CO2 + H2O
B. CH3COOH + 2O2 → 2CO2 + 2H2O
C. 2C6H14 + 19O2 → 12CO2 + 14H2O
ПАВЛЕНКО ПОЛИНА
ОтветитьУдалить11.1
1. a) The reactants are carbon dioxide and water. The products are glucose and oxygen; b) the reactants are magnesium and oxygen gas. The products are magnesium oxide.
2. Unlike in a math equation, a chemical equation does not use an equal sign. Instead the arrow is called a yield sign and so the equation is described as “reactants yield products”.
3.
4. a.10; b. 2,6; c. 8,16,1,4; d. 4,8,4; e. 3,9,27; f. 6,2,8.
5.
6. a) 2KClO3 = 2KCl + 3O2; b) Ca(OH)2 + 2HBr = CaBr2 + 2H2O; c) 2C4H10 + 26O2 = 8CO2 + 10H2O; d) 2NH3 + 3CuO = 3Cu + N2 + 3H2O
7. a) Na2CO3 = Na2O + CO2; b) P4O10+ 6H2O = 4H3PO4; c) 3Pb+N2 = Pb3NO; d) (NH4)2CO3 = 2NH3 + H2O + CO2.
8. a) BaO + H2O = Ba(OH)2 (aq); b) 2Li3PO4 (aq)+ 3Fe(NO3)2 (aq)= 6LiNO3 (aq) + Fe3(PO4)2 (s); c) 2Al (m)+ 3ZnCl2 (aq) = 2AlCl3 (aq) + 3Zn (s); d) Fe2O3 (s) + 3CO (g) = 2Fe + 3CO2 (g).
9. a) 4K+O2 = 2K2O; b) 2Ag2O = 4Ag + O2; c) 2NaCl + F2 = 2NaF + Cl2
11.2
1. a) AB + CD → AD + CB ; b) AB → A + B ; c) A + BC → AC + B ; d) A + B → AB .
2. A double-replacement reactions takes place only between substances in aqueous solution
3. A combustion reaction is a reaction in which a substance reactants with oxygen gas, releasing energy in the form of light and heat. Combustion reactions must involve O2 as one reactant. The combustion of hydrogen gas produces water vapor.
4. The most reactive elements located in the upper part of the table.
5. a) double-replacement reaction; b) combination reaction; c) double-replacement reaction,combustion; d) decomposition reaction; e) double-replacement reaction.
6. a) Sr+ S →SrS ; b) 2Zn(s)+O2(g) →2ZnO ; c) Li2O(s)+H2O(l) →2LiOH
7. a) 2Na3N= 6Na+N2 ; b)SnCO3=2SnO+CO2 ; c) 2NCl3=N2+3Cl2 ; d) Mg(OH)2=MgO+H2O .
8. a)Cl2(g)+2NaF(aq) →2NaCl+F2 ;b) Ca+2H2O= Ca(OH)2+H2 ;c) 2Pt(s)+2H2SO4(aq)→Pt2SO4+SO2+2H2O;d) 2Al(s)+3NiBr2(aq) →2AlBr3+3Ni .
9. a) 3Ca(NO3)2(aq) +2K3PO4(aq)=6KNO3+Ca3(PO4)2 ;b) 2HI(aq)+Mg(OH)2(aq)→2H2O+MgI2 ;c) FeS(s)+2HCl(aq) →FeCl2+H2S ;d) CuBr2(aq)+2KOH(aq)=Cu(OH)2+2KBr .
10. a) 2C2H2+5O2=4CO2+2H2O ; b) CH3COOH+2O2=2CO2+2H2O; c) 2C6H14+19O2=12CO2+14H2O .