Exam 1

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Question #1

Choose the pair in which the components have the same charge.

A a neutron and a hydrogen atom

B a hydrogen atom and an electron

C a proton and a hydrogen atom

D an electron and a neutron

Question #2

The number of significant figures in 0.074100 × 10–4 is

A 3

B 7

C 4

D 5

E 6

Question #3

Give the formula for sodium bromide.

A NABr

B NaBr

C Na3S

D Nabr

Question #4

How many significant figures should there be in the answer when you divide 4.1 by 7.464?

A 4

B 3

C 1

D 7

E 2

Question #5

The alkaline earth metals have how many valence electrons?

A 7

B 2

C 1

D 8

E 3

Question #6

A quantitative observation

A none of these

B always makes a comparison.

C contains a number and a unit.

D does not contain a number.

E must be obtained through experimentation.

Question #7

An atom with 46 protons has a mass number of 102. The atom is

A none of these

B Ba

C U

D Pd

E No

Question #8

The neutral atoms of all the isotopes of the same element have

A the same mass numbers.

B different numbers of protons.

C equal numbers of neutrons.

D the same number of electrons.

E the same masses.

Question #9

Which of the following compounds contains an ionic bond?

A NaCl

B SO2

C CCl4

D O2

E HCl(g)

Question #10

How many electrons are in the third principal energy level (n = 3) of one atom of Fe?

A none of these

B 14

C 2

D 18

E 8

Question #11

The number 500,000 expressed in scientific notation is

A 50 X 104

B 5 X 105

C 500 X 103

D 5.0 X 10-5

E 5 X 105

Question #12

The noble gases contain how many valence electrons?

A 0

B 1

C 8

D none of these

E 7

Question #13

Convert 67.6°F to kelvins.

A 340.6 K

B –253.2 K

C –205.4 K

D 292.8 K

E 452.3 K

Question #14

Using the rules of significant figures, calculate the following:
14.8903 – 2.14 =

A 12.75

B 12.7503

C 12

D 12.75

E 13

Question #15

The maximum number of electrons allowed in each of the d orbitals is

A 8

B 4

C 18

D 32

E 2

Question #16

A given set of d orbitals consists of ______________ orbital(s).

A 3

B none of these

C 1

D 6

E 5

Question #17

True or false? In naming ionic compounds, the cation is always named first and the anion second.

A FALSE

B TRUE

Question #18

The symbol Cs stands for the element

A calcium

B cesium

C curium

D cadmium

E carbon

Question #19

The mass number of an atom equals

A the number of protons plus the number of neutrons per atom

B the atomic mass of the element

C the number of neutrons per atom

D the atomic number of the element

E none of the above

Question #20

Which element has the fewest electrons in its valence shell?

A P

B O

C Br

D Cs

E Mg

Question #21

How many neutrons are contained in an iodine nucleus with a mass number of 130?

A 126

B 77

C 53

D 73

E 130

Question #22

The energy levels of the hydrogen atom (and all atoms) are ______________, meaning that only certain discrete energy levels are allowed.

A continuous

B two of these

C ramp-like

D varied

E quantized

Question #23

The symbol for tin is

A Ti.

B Tn.

C T.

D Si.

E Sn.

Question #24

Which of the following is an incorrect designation for an atomic orbital?

A 4f

B 2d

C 1s

D 2p

E 3s

Question #25

Which atomic particle determines the chemical behavior of an atom?

A nucleus

B proton

C electron

D neutron

E none of these

Question #26

Which of the following compounds contains one or more covalent bonds?

A BaBr2

B CaO

C CO2

D Cs2O

E NaCl

Question #27

The correct formula for sodium sulfide is

A NaS2

B Na2S

C NaS

D Na3S

E SSu

Question #28

When an electron in the ground state absorbs energy, it goes to a(n) ______________ state.

A lower

B stable

C excited

D frenetic

Question #29

Which of the following is NOT a correct name–symbol combination?

A copper, Cu

B boron, B

C magnesium, Mn

D beryllium, Be

E cobalt, Co

Question #30

Give the formula for dinitrogen pentoxide.

A N2O5

B N2O5

C No25

D NO25

Question #31

The binary compound PCl3 is called

A phosphorus trichloride

B none of these

C phosphorus chloride

D triphosphorus chloride

E monophosphorus trichloride

Question #32

The charge on a barium ion in its ionic compound is

A +3

B Various charges are possible.

C +1

D +2

E -1

Question #33

The correct name for LiCl is

A monolithium chloride

B lithium(I) chloride

C monolithium monochloride

D lithium monochloride

E lithium chloride

Question #34

The number of protons in 200 80 Hg is

A 80

B dependent on ionic charge

C 120

D 200

E unknown

Question #35

The number of protons in the nucleus of an atom is called its

A isotope number

B atomic number

C mass number

D none of these

E valence

Question #36

Which of the following has the electron configuration 1s22s22p63s23p64s23d5?

A none of these

B Cr

C Br

D Ca

E Mn

Question #37

Which of the following is a nonmetal?

A carbon

B calcium

C cerium

D copper

E cesium

Question #38

The maximum number of electrons allowed in the p sublevel of the third principal level is

A 2

B 1

C 8

D 3

E 6

Question #39

We generally report a measurement by recording all of the certain digits plus ____ uncertain digit(s).

A four

B two

C three

D no

E one

Question #40

True or false: Covalent bonding occurs when electrons are shared by nuclei.

A TRUE

B FALSE

Question #41

The number of d orbitals in the second principal energy level is

A 10

B 14

C 6

D 2

E none of these

Question #42

True or false? Covalent bonding occurs when a metal reacts with a nonmetal.

A TRUE

B FALSE

Question #43

The symbol Fe stands for the element

A fermium

B tin

C fluorine

D francium

E iron

Question #44

The number of protons in a given nucleus determines the

A number of isotopes.

B mass number.

C number of protons.

D atomic number.

E number of electrons.

Question #45

How many significant figures are in the number 60.02 × 105?

A 3

B none of these

C 2

D 5

E 4

Question #46

The electron configuration for the sulfur atom is

A 1s22s22p63s23p2

B 1s22s22p63s23p5

C 1s22s22p63s5

D none of these

E 1s22s22p63s23p4

Question #47

A given set of f orbitals consists of ______________ orbital(s).

A 9

B 3

C 5

D 7

E 1

Question #48

A piece of an unknown metal weighs 382.9 g and occupies a volume of 72.2 mL. What is the density of this metal?

A 0.189 g/mL

B 2.76 × 104 g/mL

C none of these

D 5.30 g/mL

E 53.0 g/mL

Question #49

The maximum electron capacity of an f sublevel is

A 14

B 6

C 10

D 2

E 18

Question #50

The name for Li2O is ______________.

A Lithium ion

B Lithium dioxide

C Lithium oxide

D Lithium 2 oxide

Question #51

Which of the following is a noble gas?

A N2

B H2

C Ar

D O2

E CO2

Question #52

The name for SrCl2 is

A strontium(II) chloride

B strontium(I) chloride(II)

C strontium chloride

D strontium(I) chloride

E strontium dichloride

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