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 an electron and a neutron

D a proton and a hydrogen atom

Question #2

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

A 3

B 4

C 6

D 5

E 7

Question #3

Give the formula for sodium bromide.

A Na3S

B NABr

C NaBr

D Nabr

Question #4

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

A 3

B 4

C 1

D 2

E 7

Question #5

The alkaline earth metals have how many valence electrons?

A 8

B 2

C 3

D 1

E 7

Question #6

A quantitative observation

A does not contain a number.

B none of these

C must be obtained through experimentation.

D always makes a comparison.

E contains a number and a unit.

Question #7

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

A Pd

B Ba

C U

D none of these

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 the same masses.

D equal numbers of neutrons.

E the same number of electrons.

Question #9

Which of the following compounds contains an ionic bond?

A NaCl

B O2

C SO2

D CCl4

E HCl(g)

Question #10

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

A 18

B 8

C 14

D none of these

E 2

Question #11

The number 500,000 expressed in scientific notation is

A 5.0 X 10-5

B 5 X 105

C 5 X 105

D 500 X 103

E 50 X 104

Question #12

The noble gases contain how many valence electrons?

A 1

B 7

C 0

D none of these

E 8

Question #13

Convert 67.6°F to kelvins.

A 452.3 K

B –205.4 K

C 292.8 K

D 340.6 K

E –253.2 K

Question #14

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

A 13

B 12.75

C 12

D 12.75

E 12.7503

Question #15

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

A 32

B 4

C 18

D 8

E 2

Question #16

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

A 1

B 5

C 3

D 6

E none of these

Question #17

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

A TRUE

B FALSE

Question #18

The symbol Cs stands for the element

A cadmium

B curium

C cesium

D carbon

E calcium

Question #19

The mass number of an atom equals

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

B the atomic number of the element

C the number of neutrons per atom

D the atomic mass of the element

E none of the above

Question #20

Which element has the fewest electrons in its valence shell?

A Br

B Cs

C Mg

D P

E O

Question #21

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

A 73

B 126

C 53

D 130

E 77

Question #22

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

A ramp-like

B varied

C quantized

D two of these

E continuous

Question #23

The symbol for tin is

A Ti.

B Si.

C Tn.

D Sn.

E T.

Question #24

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

A 2p

B 2d

C 3s

D 1s

E 4f

Question #25

Which atomic particle determines the chemical behavior of an atom?

A none of these

B neutron

C nucleus

D proton

E electron

Question #26

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

A NaCl

B CaO

C Cs2O

D BaBr2

E CO2

Question #27

The correct formula for sodium sulfide is

A NaS2

B NaS

C SSu

D Na2S

E Na3S

Question #28

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

A stable

B excited

C frenetic

D lower

Question #29

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

A cobalt, Co

B boron, B

C magnesium, Mn

D copper, Cu

E beryllium, Be

Question #30

Give the formula for dinitrogen pentoxide.

A No25

B N2O5

C N2O5

D NO25

Question #31

The binary compound PCl3 is called

A none of these

B monophosphorus trichloride

C phosphorus chloride

D triphosphorus chloride

E phosphorus trichloride

Question #32

The charge on a barium ion in its ionic compound is

A +2

B Various charges are possible.

C +1

D -1

E +3

Question #33

The correct name for LiCl is

A monolithium chloride

B lithium(I) chloride

C lithium monochloride

D monolithium monochloride

E lithium chloride

Question #34

The number of protons in 200 80 Hg is

A 120

B dependent on ionic charge

C unknown

D 80

E 200

Question #35

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

A isotope number

B none of these

C valence

D mass number

E atomic number

Question #36

Which of the following has the electron configuration 1s22s22p63s23p64s23d5?

A Ca

B Mn

C Br

D Cr

E none of these

Question #37

Which of the following is a nonmetal?

A carbon

B calcium

C copper

D cesium

E cerium

Question #38

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

A 6

B 2

C 8

D 3

E 1

Question #39

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

A two

B three

C no

D one

E four

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 2

B 10

C none of these

D 14

E 6

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 tin

B fluorine

C francium

D fermium

E iron

Question #44

The number of protons in a given nucleus determines the

A atomic number.

B number of isotopes.

C mass number.

D number of protons.

E number of electrons.

Question #45

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

A 5

B none of these

C 2

D 4

E 3

Question #46

The electron configuration for the sulfur atom is

A 1s22s22p63s23p2

B none of these

C 1s22s22p63s23p4

D 1s22s22p63s23p5

E 1s22s22p63s5

Question #47

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

A 9

B 3

C 5

D 1

E 7

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 5.30 g/mL

B 53.0 g/mL

C none of these

D 2.76 × 104 g/mL

E 0.189 g/mL

Question #49

The maximum electron capacity of an f sublevel is

A 6

B 14

C 2

D 18

E 10

Question #50

The name for Li2O is ______________.

A Lithium ion

B Lithium 2 oxide

C Lithium dioxide

D Lithium oxide

Question #51

Which of the following is a noble gas?

A H2

B Ar

C O2

D CO2

E N2

Question #52

The name for SrCl2 is

A strontium(I) chloride(II)

B strontium(II) chloride

C strontium dichloride

D strontium chloride

E strontium(I) chloride

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