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Midterm

self test chp 1-6

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Department
Chemistry
Course Code
CHMA10H3
Professor
Ann Verner

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CHMA10H Chapters 1-3 Self Assessment test 2008
To get the most out of this exercise, you should review the lecture notes and text book before
you do this quiz.
You should not take longer than 20 minutes to answer these 10 questions.
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
1) The element Se can be found in period _____ and group _____ of the periodic table.
2) The quantity 1.0567 qt rounded to two significant figures is _____ qt.
3) Isotopes have the same number of _____ but different numbers of _____ in their nuclei.
4) The formula of iron(III) oxide contains _____ iron(III) and _____ oxide ions.
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
5) Elements A and Q form two compounds, AQ and A2Q. Which of the following must be true?
A) (mass Q)/(mass A) for AQ must be 1/2 (mass Q)/(mass A) for A2Q.
B) (mass Q)/(mass A) for AQ must be 2 times (mass Q)/(mass A) for A2Q.
C) (mass Q)/(mass A) for AQ must equal (mass Q)/(mass A) for A2Q.
D) (mass Q)/(mass A) is one for AQ, and 1/2 for A2Q.
6) An atom has 13 neutrons and 10 electrons. If it is a cation with a charge of +1, what is its correct symbol?
A) 26
13 Al+ B) 13
11Na+ C) 24
11Na+ D) 13
10Na+ E) 23
10Ne+
7) Which of the following statements does not describe a physical property of chlorine?
A) Chlorine combines with sodium to form table salt.
B) The color of chorine gas is green.
C) The freezing point of chlorine is -101°C.
D) The density of chlorine gas at standard temperature and pressure is 3.17 g/L.
8) A 4.05 g sample of a compound containing only C, H, and O was burned completely. The only combustion
products were 10.942 g CO2 and 4.476 g H2O. What is the empirical formula of the compound?
A) CH2O B) C7H7O C) C7H14O7 D) C6H12O E) C7H14O
9) What is the identity of substance X if 0.380 mol of X weighs 17.5 g?
A) NO3 B) N2O C) N2O4 D) NO2
10) Choose the INCORRECT name formula combination.
A) HNO2 nitrous acid
B) Ba(OH)2 barium hydroxide
C) LiCN lithium cyanide
D) Na2CO3 sodium carbonate
E) Fe2(SO4)3 iron(III) sulfite
Answer Key
Testname: CHAPTER 1æ3 REVIEW
1) 4, 6A
2) 1.1
3) protons, neutrons
4) 2, 3
5) B
6) C
7) A
8) E
9) D
10) E
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CHMA10H Chapters 4 Self Assessment test 2008
To get the most out of this exercise, you should review the lecture notes and text book before
you do this quiz.
You should not take longer than30 minutes to answer these 10 questions.
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
1) When the reaction C4H10 + O2 :CO2 + H2O is balanced using the smallest whole number coefficients, the
coefficient in front of O2 is _____.
2) In a chemical reaction, the substance that runs out first, causing the reaction to stop, is the __________.
3) The molarity of a solution prepared by dissolving 1.00 g of sodium chloride in enough water to make 250 ml of
solution is __________.
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
4) Which of the following are combustion reactions?
1) CH4 (g) + O2 (g) :CO2 (g) + H2O (l)
2) CaO (s) + CO2 (g) :CaCO3 (s)
3) PbCO3 (s) :PbO (s) + CO2 (g)
4) CH3OH (l) + O2 (g) :CO2 (g) + H2O (l)
A) 2, 3, and 4 B) 3 and 4 C) 1, 2, 3, and 4 D)1 and 4 E) 1, 3, and 4
5) How many moles of Boron Trichloride, BCl3(g) are needed to produce 25.0 g of HCl(aq) when BCl3 reacts with
water to produce HCl(aq) and Boron Trihydroxide?
A) 2.06 mol B) 4.38 mol C) 0.686 mol D) 0.229 mol
6) The reaction HNO3(aq) + KOH(aq) :KNO3(aq) + H2O(l) is best classified as a(n)
A) precipitation reaction. B) oxidation-reduction reaction.
C) acid-base neutralization reaction. D) single replacement reaction.
7) What volume of 2.0 M HCl, in mL, is required to dissolve a 10.0 g piece of Zn?
Zn(s) + 2 HCl :ZnCl2 + H2(g)
A) 170 mL B) 330 mL C) 150 mL D) 310 mL E) 76 mL
8) 10 g of nitrogen is reacted with 5.0 g of hydrogen to produce ammonia according to the chemical equation
shown below. Which one of the following statements is false?
N2(g) + 3 H2(g) :2 NH3(g)
A) Hydrogen is the excess reactant. B) 2.8 grams of hydrogen are left over.
C) The theoretical yield of ammonia is 15 g. D) Nitrogen is the limiting reactant.
9) A student dissolved 3.00 g of Co(NO3)2 in enough water to m,ake 100. mL of stock solution. He took 4.00 mL
of the solution then diluted it with water to give 275 mL of a final solution. How many grams of NO3- ion are
there in the final solution?
A) 0.0296 g B) 0.0813 g C) 0.0407 g D) 0.0148 g
10) What is the concentration of NO3- ions in a solution prepared by dissolving 15.0 g of Ca(NO3)2 in enough
water to produce 300. mL of solution?
A) 0.403 M B) 0.305 M C) 0.152 M D) 0.609 M
Answer Key
Testname: CHAPTER 4 REVIEW
1) 13
2) limiting reactant
3) 0.0684 M
4) D
5) D
6) C
7) C
8) C
9) B
10) D
CHMA10H Chapters 5 Self Assessment test 2008
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Description
CHMA10H Chapters 1-3 Self Assessment test 2008 To get the most out of this exercise, you should review the lecture notes and text book before you do this quiz. You should not take longer than 20 minutes to answer these 10 questions. SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. 1) The element Se can be found in period _____ and group _____ of the periodic table. 2) The quantity 1.0567 qt rounded to two significant figures is _____ qt. 3) Isotopes have the same number of _____ but different numbers of _____ in their nuclei. 4) The formula of iron(III) oxide contains _____ iron(III) and _____ oxide ions. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 5) Elements A and Q form two compounds, AQ and A2Q. Which of the following must be true? A) (mass Q)(mass A) for AQ must be 12 (mass Q)(mass A) for A2Q. B) (mass Q)(mass A) for AQ must be 2 times (mass Q)(mass A) for A2Q. C) (mass Q)(mass A) for AQ must equal (mass Q)(mass A) for A2Q. D) (mass Q)(mass A) is one for AQ, and 12 for A2Q. 6) An atom has 13 neutrons and 10 electrons. If it is a cation with a charge of +1, what is its correct symbol? A) 26 13 Al+ B) 13 11Na+ C) 24 11Na+ D) 13 10Na+ E) 23 10Ne+ 7) Which of the following statements does not describe a physical property of chlorine? A) Chlorine combines with sodium to form table salt. B) The color of chorine gas is green. C) The freezing point of chlorine is -101C. D) The density of chlorine gas at standard temperature and pressure is 3.17 gL. 8) A 4.05 g sample of a compound containing only C, H, and O was burned completely. The only combustion products were 10.942 g CO2 and 4.476 g H2O. What is the empirical formula of the compound? A) CH2O B) C7H7O C) C7H14O7 D) C6H12O E) C7H14O 9) What is the identity of substance X if 0.380 mol of X weighs 17.5 g? A) NO3 B) N2O C) N2O4 D) NO2 10) Choose the INCORRECT name formula combination. A) HNO2 nitrous acid B) Ba(OH)2 barium hydroxide C) LiCN lithium cyanide D) Na2CO3 sodium carbonate E) Fe2(SO4)3 iron(III) sulfite Answer Key Testname: CHAPTER 13 REVIEW 1) 4, 6A 2) 1.1 3) protons, neutrons 4) 2, 3 5) B 6) C 7) A 8) E 9) D 10) E www.notesolution.com
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