CHE 105 Spring 2018 Exam 1

Your Name: Your ID:

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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

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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

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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

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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

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Question #: 5

How many centiliters of water can fit in a one kiloliter bathtub?

A. 100 centiliters

B. 1000 centiliters

C. 10000 centiliters

D. 100000 centiliters

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Question #: 6

Which group has the largest number of the set shown in scientific notation?

A.

0.22 5.1×10–2 744 6.6×102

B.

2.6×101 34 7.9×10–3 1.1×102

C.

2.05 9.8×10–5 19 4.17

D.

7.2×102 895 3.7×10–8 6.3×10–4

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Question #: 7

What is the answer to the calculation? (4.4 x 108) ÷ (2.2 x 103) = ?

A. 2.0 x 105

B. 9.7 x 1011

C. 9.5 x 109

D. 2.2 x 105

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Question #: 8

A piece of metal with a mass of 114 g was placed into a graduated cylinder that contained 25.00 mL of water, raising the water level to 42.50 mL. What is the density of the metal?

A. 0.154 g/cm3

B. 0.592 g/cm3

C. 2.68 g/cm3

D. 6.51 g/cm3

E. 7.25 g/cm3

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Question #: 9

How many significant figures are in the following number? 0.030040500

A. 10

B. 9

C. 8

D. 7

E. 6

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Question #: 10

Which answer, with the correct number of significant figures, should be reported for the following calculation?

A. 4.5728

B. 4.6

C. 4.57

D. 4.573

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Question #: 11

How many cm are in a 36.0 inch ruler?

A. 91.4

B. 14.2

C. 12.0

D. 52.3

E. 72.9

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Question #: 12

The diameter of the Earth is 12.7 Mm. What is this diameter in centimeters?

A. 1.27 × 106 cm

B. 1.27 × 107 cm

C. 1.27 × 108 cm

D. 1.27 × 109 cm

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Question #: 13

Convert 5.40 cubic inches to mL.

A. 88.5 mL

B. 13.6 mL

C. 7.62 mL

D. 22.7 mL

E. 45.4 mL

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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.

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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

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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

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Question #: 17

What is the atomic number of potassium?

A. 39.10

B. 19

C. 15

D. 30.97

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Question #: 18

How many protons, neutrons, and electrons are in a neutral atom of 130Ba?

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

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Question #: 19

What is the total number of electrons in an O2– ion?

A. 2

B. 8

C. 6

D. 10

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Question #: 20

Which pair has two species with the same numbers of neutrons and electrons?

A. 4He+ and 6Li+

B. 12C2– and 14N

C. 18O2– and 20Ne2+

D. 22Ne and 24Mg2+

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Question #: 21

What is the average atomic mass of boron in a Martian meteorite with isotopic abundances of 92.70% for 10B (10.013 amu) and 7.300% for 11B (11.009 amu)?

A. 10.09 amu

B. 10.83 amu

C. 10.46 amu

D. 10.22 amu

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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

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Question #: 23

Which two elements are metals?

A. calcium

B. cobalt

C. bromine

D. phosphorous

E. boron

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Question #: 24

Which ion is most likely to exist?

A. At–

B. Se3–

C. Ca+

D. Kr2+

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Question #: 25

What is the chemical formula of the sulfate ion?

A. SO42–

B. SO32–

C. SO4–

D. SO3–

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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

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Question #: 27

What is the chemical formula of lead(IV) oxide?

A. PbO2

B. P4O

C. PbO4

D. Pb4O2

E. PbO

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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

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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

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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

DRAFTDo Not Use Until Posted.

CHE 105 Spring 2018 Exam 1 - Confidential

Your Name: Your ID:

attachment_for_pubExamUID_lnxp115174220089952821XX_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

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. 1000 centiliters C. 10000 centiliters

✓D. 100000 centiliters

Question #: 6

Which group has the largest number of the set shown in scientific notation?

A.

 

✓B.

 

C.

 

D.

 

Question #: 7

What is the answer to the calculation?

(4.4 x 108) ÷ (2.2 x 103) = ?

 

✓A. 2.0 x 105

B. 9.7 x 1011

C. 9.5 x 109

D. 2.2 x 105

Question #: 8

A piece of metal with a mass of 114 g was placed into a graduated cylinder that contained 25.00

mL of water, raising the water level to 42.50 mL.  What is the density of the metal?

A. 0.154 g/cm3

B. 0.592 g/cm3

C. 2.68 g/cm3

✓D. 6.51 g/cm3

E. 7.25 g/cm3

0.22 5.1×10–2 744 6.6×102

2.6×101 34 7.9×10–3 1.1×102

2.05 9.8×10–5 19 4.17

7.2×102 895 3.7×10–8 6.3×10–4

Question #: 9

How many significant figures are in the following number?

0.030040500

 

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. 4.5728 B. 4.6

✓C. 4.57 D. 4.573

Question #: 11

How many cm are in a 36.0 inch ruler?

 

✓A. 91.4

B. 14.2 C. 12.0 D. 52.3 E. 72.9

Question #: 12

The diameter of the Earth is 12.7 Mm.  What is this diameter in centimeters?

A. 1.27 × 106 cm B. 1.27 × 107 cm C. 1.27 × 108 cm

✓D. 1.27 × 109 cm

Question #: 13

Convert 5.40 cubic inches to mL.

 

✓A. 88.5 mL

B. 13.6 mL C. 7.62 mL D. 22.7 mL E. 45.4 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 uniqueproperties of nitrogen.

C. Atoms of sodium do not change into atoms of another element during the chemicalreaction with chlorine.

D. One carbon atom combines with one oxygen atom to form one molecule of carbonmonoxide.

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

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. 39.10

✓B. 19 C. 15 D. 30.97

Question #: 18

How many protons, neutrons, and electrons are in a neutral atom of 130Ba? 

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

Question #: 19

What is the total number of electrons in an O2– 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.

4He+ and 6Li+ B.

12C2– and 14N C.

18O2– and 20Ne2+

✓D. 22Ne and 24Mg2+

Question #: 21

What is the average atomic mass of boron in a Martian meteorite with isotopic abundances of

92.70% for 10B (10.013 amu) and 7.300% for 11B (11.009 amu)? 

✓A. 10.09 amu

B. 10.83 amu C. 10.46 amu D. 10.22 amu

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. Se3–

C. Ca+

D. Kr2+

Question #: 25

What is the chemical formula of the sulfate ion?

 

✓A. SO42–

B. SO32–

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

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