In the particle diagram below, represents an atom of element A and represents an atom of element B.

Transcription

1 Name: Page 1 1) When the equation H2 + Fe3O4 ˆ Fe + H2O is completely balanced using the smallest whole numbers, the coefficient of H2 would be Questions 2 and 3 refer to the following: In the particle diagram below, represents an atom of element A and represents an atom of element B. 2) Which equation best describes the reaction shown in the diagram? A) 2AB ˆ A + 2B B) 2A2B ˆ 2A2 + B2 C) 2AB2 ˆ A2 + 2B2 D) 2AB ˆ 2A + B 3) What general type of reaction is illustrated in the diagram? A) decomposition 4) Which balanced chemical equation represents a single replacement A) C2H4(g) + 3O2(g) ˆ 2CO2(g) + 2H2O(g) B) Cl2(g) + 2KI(aq) ˆ 2KCl(aq) + I2(aq) 5) Given the balanced equation 2K + X ˆ 2KCl + Ca What represents the missing reactant X? C) single replacement C) 2H2O(l) ˆ 2H2(g) + O2(g) D) KCl(aq) + AgNO3(aq) ˆ KNO3(aq) + AgCl(s) A) 2CaCl2 B) CaCl2 C) 2Cl- D) Cl2 6) Given the equation: FeCl2 + Na2CO3 ˆ FeCO3 + NaCl When the equation is correctly balanced using the smallest whole numbers, the coefficient of NaCl is A) 6 B) 2 C) 3 D) 4 7) The chemical reaction Zn(s) + CuSO4(aq) ˆ ZnSO4(aq) + Cu(s) is best described as a A) synthesis reaction B) combustion reaction C) single replacement reaction D) double replacement reaction 8) According to the Activity Series chemistry reference table, which pair of substances would undergo a single replacement A) Ag and MgCl2 B) Pb and MgCl2 C) Zn and MgCl2 D) Na and MgCl2 9) Which balanced chemical equation represents a synthesis A) Zn(s) + 2HCl(aq) ˆ ZnCl2(aq) + H2(g) B) C2H4(g) + 3O2(g) ˆ 2CO2(g) + 2H2O(g) C) 2Al(s) + 3Cl2(g) ˆ 2AlCl3(s) D) MgBr2(l) ˆ Mg(l) + Br2(g)

2 10) The particle diagram below represents a mixture of reactants Page 2 Which diagram for the products of the reaction shows the Law of Conservation of Mass? A) C) B) D) 11) Given the balanced equation: Cl2(g) + 2KBr(aq) ˆ X + Br2(l) What represents the missing product X? A) 2H2O(g) B) Cl2(g) C) 2KCl(aq) D) 2K(aq) 12) Given the unbalanced equation: Al2(SO4)3 + Ca(OH)2 ˆ Al(OH)3 + CaSO4 When the equation is completely balanced using the smallest whole-number coefficients, the sum of the coefficients is A) 9 B) 5 C) 4 D) 3 13) Which of the following is a correctly balanced equation for a reaction between hydrogen gas and oxygen gas? A) 2H2(g) + 2O2(g) ˆ H2O(l) + heat C) H2(g) + O2(g) ˆ 2H2O(l) + heat B) 2H2(g) + O2(g) ˆ 2H2O(l) + heat D) H2(g) + O2(g) ˆ H2O(l) + heat 14) Given the balanced equation: KCl(aq) + AgNO3(aq) ˆ KNO3(aq) + X What is the correct formula for the product represented by the letter X? A) KCl2(aq) B) K2Cl(aq) C) AgCl2(s) D) AgCl(s) 15) When the equation Na(s) + H2O(l) ˆ NaOH(aq) + H2(g) is correctly balanced using smallest whole numbers, the coefficient of the water is

3 16) What general type of chemical reaction is illustrated in the particle diagram below? Page 3 A) double replacement B) single replacement C) synthesis D) decomposition 17) According to the Activity Series chemistry reference table, which pair of substances would undergo a single replacement A) Cs and RbCl B) Cs and LiCl C) Li and RbCl D) Rb and LiCl 18) What type of reaction best describes the equation below? C2H4(g) + 3O2(g) ˆ 2CO2(g) + 2H2O(g) A) combustion B) synthesis Questions 19 and 20 refer to the following: C) double replacement D) decompostion In the particle diagram below, represents an atom of element A and represents an atom of element B. 19) What general type of reaction is illustrated in the diagram? A) decomposition 20) Which equation best describes the reaction shown in the diagram? C) synthesis A) 3A + B ˆ 2AB B) 2A + 6B ˆ A2B6 C) A2 + 3B2 ˆ 2AB3 D) 3A2 + B2 ˆ 2A3B Questions 21 through 23 refer to the following: The diagram below represents a reaction between Fe ( ) and Cl2 ( ). 21) What is the correct name for the product produced in the A) iron (II) chloride B) iron (III) chloride C) iron (III) chlorite D) iron (II) chlorite 22) What general type of reaction is illustrated in the diagram? A) synthesis B) decomposition 23) What is the correct formula for the product produced in the C) double replacement A) FeCl3 B) FeCl2 C) Fe2Cl6 D) Fe3Cl

4 24) Given the balanced equation: Page 4 H2SO4(aq) + BaCl2(aq) ˆ 2HCl(aq) + X What is the correct formula for the product represented by the letter X? A) H2O(l) B) Ba(SO4)2(s) C) BaSO4(s) D) Ba2SO4(s) Questions 25 and 26 refer to the following: In the particle diagram below, represents an atom of element A, represents an atom of element B, and represents an atom of element C. 25) What general type of reaction is illustrated in the diagram? A) single replacement B) decomposition 26) Which equation best describes the reaction shown in the diagram? A) A + B2C2 ˆ AB2 + 2C B) A + BC ˆ AC + B 27) Given the balanced equation: C) double replacement C) 2AB + C ˆ A2C + B2 D) A + 2BC ˆ AB2 + C2 2Na + 2H2O ˆ 2X + H2 What is the correct formula for the product represented by the letter X? A) Na2O B) Na2OH C) NaO D) NaOH 28) The reaction Ba(NO3)2(aq) + Na2SO4(aq) ˆ 2NaNO3(aq) + BaSO4(s) goes to completion because a A) soluble salt is formed B) nonionized product is formed 29) What type of reaction best describes the following chemical equation? 2AlCl3(aq) + 3Na2CO3(aq) ˆ Al2(CO3)3(s) + 6NaCl(aq) A) double replacement B) synthesis C) gas is formed D) precipitate is formed C) decomposition 30) According to the Activity Series chemistry reference table, which pair of substances would undergo a single replacement A) I2 and CaF2 B) Cl2 and CaF2 C) I2 and CaCl2 D) F2 and CaCl2 31) When the equation Al2(SO4)3 + ZnCl2 ˆ AlCl3 + ZnSO4 is correctly balanced using the smallest whole number coefficients, the sum of the coefficients is A) 9 B) 4 C) 8 D) 5

5 32) Given the unbalanced equation: Page 5 Ag(s) + H2S(g) ˆ Ag2S(s) + H2(g) What is the sum of the coefficients when the equation is completely balanced using the smallest whole-number coefficients? A) 10 B) 4 C) 5 D) 8 33) When C3H8 burns completely in an excess of oxygen, the products formed are A) CO2 and H2 B) CO2 and H2O C) CO and H2 D) CO and H2O 34) Given the balanced equation: 2H2(g) + O2(g) ˆ X What represents the missing product X? A) H3O+(aq) B) 2H2O(g) C) 2OH-(aq) D) H2O2(l) 35) According to the Activity Series chemistry reference table, which pair of substances would undergo a single replacement A) Br2 and NaBr B) Br2 and NaI C) Br2 and NaF D) Br2 and NaCl 36) When the equation C8H16 + O2 ˆ CO2 + H2O is correctly balanced using the smallest whole number coefficients, the coefficient of O2 is A) 16 B) 8 C) 12 D) 1 37) When the equation Al + O2 ˆ Al2O3 is correctly balanced using smallest whole numbers, the sum of the coefficients will be A) 12 B) 7 C) 9 D) 3 38) When the equation H2 + N2 ˆ NH3 is completely balanced using the smallest whole numbers, the sum of all the coefficients will be A) 12 B) 6 C) 7 D) 3 39) When the equation Al(s) + O2(g) ˆ Al2O3(s) is correctly balanced using the smallest whole numbers, the coefficient of Al(s) is 40) What general type of chemical reaction is illustrated in the particle diagram below? A) single replacement C) decomposition 41) When the equation H2S + O2 ˆ H2O + SO2 is completely balanced using smallest whole numbers, the sum of all the coefficients is A) 11 B) 7 C) 5 D) 9 42) Which chemical equation best represents a decomposition A) H2CO3(aq) ˆ H2O(l) + CO2(g) C) KCl(aq) + AgNO3(aq) ˆ KNO3(aq) + AgCl(s) B) 2Al(s) + 3Cl2(g) ˆ 2AlCl3(s) D) Cl2(g) + 2KI(aq) ˆ 2KCl(aq) + I2(aq)

6 Page 6 43) When the equation C2H4 + O2 ˆ CO2 + H2O is balanced using the smallest whole numbers, what is the coefficient of the O2? 44) What type of reaction is illustrated by the following chemical equation? 2H2O(l) ˆ 2H2(g) + O2(g) A) decomposition B) synthesis 45) Given the unbalanced equation: C) single replacement D) double replacement C3H8(g) + O2(g) ˆ H2O(g) + CO2(g) When the equation is completely balanced using smallest whole numbers, the coefficient of O2 A) 5 B) 2 C) 3 D) 10 46) Given the unbalanced equation: Li + N2 ˆ Li3N When the equation is correctly balanced using smallest whole numbers, the coefficient of the lithium is A) 1 B) 2 C) 3 D) 6 47) Which equation illustrates conservation of mass? A) H2 + O2 ˆ 2H2O B) H2 + O2 ˆ H2O C) H2 + Cl2 ˆ HCl D) H2 + Cl2 ˆ 2HCl 48) What general type of chemical reaction is illustrated in the particle diagram below? A) double replacement B) decomposition 49) Given the incomplete equation: C) single replacement 2N2O5(g) ˆ G Which set of products completes and balances the incomplete equation? A) 4NO(g) + 5O2(g) B) 2N2(g) + 2O2(g) C) 2N2(g) + 3H2(g) D) 4NO2(g) + O2(g) 50) The chemical reaction 4Na(s) + O2(g) ˆ 2Na2O(s), is best described as a A) double replacement reaction B) decomposition reaction C) synthesis reaction reaction 51) When the equation NH3 + O2 ˆ HNO3 + H2O is completely balanced using smallest whole numbers, the coefficient of O2 would be

7 52) What general type of chemical reaction is illustrated in the particle diagram below? Page 7 A) synthesis C) decomposition