CHE 105 Spring 2018 Exam 1

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1 CHE 105 Spring 2018 Exam 1 Your Name: Your ID: Question #: 1 Which one will increase in volume when poured out of a bottle onto the classroom floor? A. a solid B. a liquid C. a gas Question #: 2 Which choice includes an element, a compound, and a mixture (listed in any order)? A. water, salad dressing, and copper B. water, carbon dioxide, and platinum C. mercury oxide, ice cream, and air D. nitrogen, sucrose, and water Question #: 3 Which two illustrate physical properties of matter? A. how much sugar dissolves in coffee B. the temperature at which water boils C. the toxicity of nicotine to humans D. the flammability of alcohol E. incinerating trash in an oven

2 Question #: 4 Which one has masses given in order of increasing (smallest to largest) magnitude? A. 2 Mg <5 Tg <3 pg B. 2 ng < 3 fg < 8 cg C. 2 pg <8 mg <4 kg D. 1 Gg <4 Tg < 9 μg Question #: 5 How many centiliters of water can fit in a one kiloliter bathtub? A. 100 centiliters B centiliters C centiliters D centiliters Question #: 6 Which group has the largest number of the set shown in scientific notation? A B C D

3 Question #: 7 What is the answer to the calculation? (4.4 x 10 8 ) (2.2 x 10 3 ) =? A. 2.0 x 10 5 B. 9.7 x C. 9.5 x 10 9 D. 2.2 x 10 5 Question #: 8 A piece of metal with a mass of 114 g was placed into a graduated cylinder that contained ml of water, raising the water level to ml. What is the density of the metal? A g/cm 3 B g/cm 3 C g/cm 3 D g/cm 3 E g/cm 3 Question #: 9 How many significant figures are in the following number? A. 10 B. 9 C. 8 D. 7 E. 6

4 Question #: 10 Which answer, with the correct number of significant figures, should be reported for the following calculation? A B. 4.6 C D Question #: 11 How many cm are in a 36.0 inch ruler? A B C D E Question #: 12 The diameter of the Earth is 12.7 Mm. What is this diameter in centimeters? A cm B cm C cm D cm

5 Question #: 13 Convert 5.40 cubic inches to ml. A ml B ml C ml D ml E ml Question #: 14 Which statement in not consistent with Dalton's Atomic Theory? A. All atoms of chlorine have identical properties that distinguish them from other elements. B. An atom of nitrogen can be broken down into smaller particles that still have the unique properties of nitrogen. C. Atoms of sodium do not change into atoms of another element during the chemical reaction with chlorine. D. One carbon atom combines with one oxygen atom to form one molecule of carbon monoxide. Question #: 15 With Millikan's measurement of the (1) of an electron, he used Thomson's measurement of the (2) of an electron to calculate the (3) of an electron. A. (1) charge, (2) mass, (3) charge-to-mass ratio B. (1) mass, (2) charge-to-mass ratio, (3) charge C. (1) charge-to-mass ratio, (2) charge, (3) mass D. (1) mass, (2) charge, (3) charge-to-mass ratio E. (1) charge, (2) charge-to-mass ratio, (3) mass

6 Question #: 16 Which one does not pair the name of the element with the correct symbol? A. iron, Fe B. gold, Au C. mercury, Ag D. sodium, Na Question #: 17 What is the atomic number of potassium? A B. 19 C. 15 D Question #: 18 How many protons, neutrons, and electrons are in a neutral atom of 130 Ba? A. 56 protons, 74 neutrons, and 130 electrons B. 56 protons, 74 neutrons, and 56 electrons C. 74 protons, 56 neutrons, and 74 electrons D. 74 protons, 56 neutrons, and 130 electrons

7 Question #: 19 What is the total number of electrons in an O 2 ion? A. 2 B. 8 C. 6 D. 10 Question #: 20 Which pair has two species with the same numbers of neutrons and electrons? A. 4 He + and 6 Li + B. 12 C 2 and 14 N C. 18 O 2 and 20 Ne 2+ D. 22 Ne and 24 Mg 2+ Question #: 21 What is the average atomic mass of boron in a Martian meteorite with isotopic abundances of 92.70% for 10 B ( amu) and 7.300% for 11 B ( amu)? A amu B amu C amu D amu

8 Question #: 22 Which one has the molecular formula for a compound followed by its empirical formula? A. N3O8; NO2 B. C8H16O4; CH4O C. C6H12O6; CH2O D. N4O2; NO2 Question #: 23 Which two elements are metals? A. calcium B. cobalt C. bromine D. phosphorous E. boron Question #: 24 Which ion is most likely to exist? A. At B. Se 3 C. Ca + D. Kr 2+

9 Question #: 25 What is the chemical formula of the sulfate ion? A. SO42 B. SO3 2 C. SO4 D. SO3 Question #: 26 What is the formula for the ionic compound formed by calcium ions and phosphate ions? A. CaPO4 B. Ca2PO4 C. Ca3(PO4)2 D. Ca2(PO4)3 Question #: 27 What is the chemical formula of lead(iv) oxide? A. PbO2 B. P4O C. PbO4 D. Pb4O2 E. PbO

10 Question #: 28 What is the name of Ti(CO3)2? A. titanium(i) carbonite B. titanium(iv) carbonate C. titanium(ii) carbonate D. titanium(ii) carbide Question #: 29 What is the systematic name of the compound S2F10? A. disulfur decafluoride B. sulfur fluoride C. disulfate hexafluoride D. disulfate heptafluoride E. disulfur nonafluoride Question #: 30 Nitrous oxide (properly named dinitrogen monoxide) is frequently called "laughing gas." What is its chemical formula? A. N2O3 B. N5O C. N2O D. N2O2

DRAFT Do Not Use Until Posted. CHE 105 Spring 2018 Exam 1 - Confidential Your Name: Your ID: attachment_for_pubexamuid_lnxp115174220089952821xx_244.

11 DRAFT Do Not Use Until Posted. CHE 105 Spring 2018 Exam 1 - Confidential Your Name: Your ID: attachment_for_pubexamuid_lnxp xx_244.jpg Question #: 1 Which one will increase in volume when poured out of a bottle onto the classroom floor? A. a solid B. a liquid C. a gas Question #: 2 Which choice includes an element, a compound, and a mixture (listed in any order)? A. water, salad dressing, and copper B. water, carbon dioxide, and platinum

12 C. mercury oxide, ice cream, and air D. nitrogen, sucrose, and water Question #: 3 Which two illustrate physical properties of matter? A. how much sugar dissolves in coffee B. the temperature at which water boils C. the toxicity of nicotine to humans D. the flammability of alcohol E. incinerating trash in an oven Question #: 4 Which one has masses given in order of increasing (smallest to largest) magnitude? A. 2 Mg <5 Tg <3 pg B. 2 ng < 3 fg < 8 cg C. 2 pg <8 mg <4 kg D. 1 Gg <4 Tg < 9 μg Question #: 5 How many centiliters of water can fit in a one kiloliter bathtub? A. 100 centiliters B centiliters C centiliters D centiliters Question #: 6 Which group has the largest number of the set shown in scientific notation?

13 A B C D Question #: 7 What is the answer to the calculation? (4.4 x 10 8 ) (2.2 x 10 3 ) =? A. 2.0 x 10 5 B. 9.7 x C. 9.5 x 10 9 D. 2.2 x 10 5 Question #: 8 A piece of metal with a mass of 114 g was placed into a graduated cylinder that contained ml of water, raising the water level to ml. What is the density of the metal? A g/cm 3 B g/cm 3 C g/cm 3 D g/cm 3 E g/cm 3

14 Question #: 9 How many significant figures are in the following number? A. 10 B. 9 C. 8 D. 7 E. 6 Question #: 10 Which answer, with the correct number of significant figures, should be reported for the following calculation? A B. 4.6 C D Question #: 11 How many cm are in a 36.0 inch ruler? A B C D E. 72.9

15 Question #: 12 The diameter of the Earth is 12.7 Mm. What is this diameter in centimeters? A cm B cm C cm D cm Question #: 13 Convert 5.40 cubic inches to ml. A ml B ml C ml D ml E ml Question #: 14 Which statement in not consistent with Dalton's Atomic Theory? A. All atoms of chlorine have identical properties that distinguish them from other elements. B. An atom of nitrogen can be broken down into smaller particles that still have the unique properties of nitrogen. C. Atoms of sodium do not change into atoms of another element during the chemical reaction with chlorine. D. One carbon atom combines with one oxygen atom to form one molecule of carbon monoxide. Question #: 15 With Millikan's measurement of the (1) of an electron, he used Thomson's measurement of the (2) of an electron to calculate the (3) of an electron.

16 A. (1) charge, (2) mass, (3) charge-to-mass ratio B. (1) mass, (2) charge-to-mass ratio, (3) charge C. (1) charge-to-mass ratio, (2) charge, (3) mass D. (1) mass, (2) charge, (3) charge-to-mass ratio E. (1) charge, (2) charge-to-mass ratio, (3) mass Question #: 16 Which one does not pair the name of the element with the correct symbol? A. iron, Fe B. gold, Au C. mercury, Ag D. sodium, Na Question #: 17 What is the atomic number of potassium? A B. 19 C. 15 D Question #: 18 How many protons, neutrons, and electrons are in a neutral atom of 130 Ba? A. 56 protons, 74 neutrons, and 130 electrons B. 56 protons, 74 neutrons, and 56 electrons C. 74 protons, 56 neutrons, and 74 electrons D. 74 protons, 56 neutrons, and 130 electrons

17 Question #: 19 What is the total number of electrons in an O 2 ion? A. 2 B. 8 C. 6 D. 10 Question #: 20 Which pair has two species with the same numbers of neutrons and electrons? A. 4 He + and 6 Li + B. 12 C 2 and 14 N C. 18 O 2 and 20 Ne 2+ D. 22 Ne and 24 Mg 2+ Question #: 21 What is the average atomic mass of boron in a Martian meteorite with isotopic abundances of 92.70% for 10 B ( amu) and 7.300% for 11 B ( amu)? A amu B amu C amu D amu Question #: 22 Which one has the molecular formula for a compound followed by its empirical formula? A. N 3 O 8 ; NO 2 B. C 8 H 16 O 4 ; CH 4 O C. C 6 H 12 O 6 ; CH 2 O

18 D. N 4 O 2 ; NO 2 Question #: 23 Which two elements are metals? A. calcium B. cobalt C. bromine D. phosphorous E. boron Question #: 24 Which ion is most likely to exist? A. At B. Se 3 C. Ca + D. Kr 2+ Question #: 25 What is the chemical formula of the sulfate ion? A. SO 4 2 B. SO 3 2 C. SO 4 D. SO 3 Question #: 26 What is the formula for the ionic compound formed by calcium ions and phosphate ions?

19 A. CaPO 4 B. Ca 2 PO 4 C. Ca 3 (PO 4 ) 2 D. Ca 2 (PO 4 ) 3 Question #: 27 What is the chemical formula of lead(iv) oxide? A. PbO 2 B. P 4 O C. PbO 4 D. Pb 4 O 2 E. PbO Question #: 28 What is the name of Ti(CO 3 ) 2?. A. titanium(i) carbonite B. titanium(iv) carbonate C. titanium(ii) carbonate D. titanium(ii) carbide Question #: 29 What is the systematic name of the compound S 2 F 10?. A. disulfur decafluoride B. sulfur fluoride C. disulfate hexafluoride

20 D. disulfate heptafluoride E. disulfur nonafluoride Question #: 30 Nitrous oxide (properly named dinitrogen monoxide) is frequently called "laughing gas." What is its chemical formula? A. N 2 O 3 B. N 5 O C. N 2 O D. N 2 O 2

CHE 105 SU17 Exam 1. Which statement describes a chemical change? Question #: 1. Question #: 2. Question #: 3

CHE 105 SU17 Exam 1. Which statement describes a chemical change? Question #: 1. Question #: 2. Question #: 3 CHE 105 SU17 Exam 1 Your Name: Your ID: Question #: 1 The state of matter in which atoms or molecules do not have a fixed volume or shape and are free to move relative to each other is a 1 [solid, liquid,