Exam 1

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Question #1

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

A a hydrogen atom and an electron

B a neutron and a hydrogen atom

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 5

C 4

D 7

E 6

Question #3

Give the formula for sodium bromide.

A Nabr

B Na3S

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 2

B 4

C 3

D 1

E 7

Question #5

The alkaline earth metals have how many valence electrons?

A 7

B 8

C 3

D 1

E 2

Question #6

A quantitative observation

A always makes a comparison.

B must be obtained through experimentation.

C does not contain a number.

D none of these

E contains a number and a unit.

Question #7

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

A U

B Pd

C No

D none of these

E Ba

Question #8

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

A different numbers of protons.

B the same number of electrons.

C the same mass numbers.

D the same masses.

E equal numbers of neutrons.

Question #9

Which of the following compounds contains an ionic bond?

A O2

B NaCl

C CCl4

D SO2

E HCl(g)

Question #10

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

A 14

B 2

C 8

D none of these

E 18

Question #11

The number 500,000 expressed in scientific notation is

A 5 X 105

B 500 X 103

C 50 X 104

D 5.0 X 10-5

E 5 X 105

Question #12

The noble gases contain how many valence electrons?

A 1

B 0

C 7

D none of these

E 8

Question #13

Convert 67.6°F to kelvins.

A –205.4 K

B –253.2 K

C 452.3 K

D 340.6 K

E 292.8 K

Question #14

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

A 12

B 13

C 12.75

D 12.7503

E 12.75

Question #15

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

A 18

B 2

C 8

D 32

E 4

Question #16

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

A 1

B none of these

C 5

D 3

E 6

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 curium

B calcium

C cadmium

D carbon

E cesium

Question #19

The mass number of an atom equals

A the atomic number of the element

B the atomic mass of the element

C the number of neutrons per atom

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

E none of the above

Question #20

Which element has the fewest electrons in its valence shell?

A Mg

B Br

C P

D O

E Cs

Question #21

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

A 73

B 77

C 53

D 130

E 126

Question #22

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

A quantized

B ramp-like

C continuous

D varied

E two of these

Question #23

The symbol for tin is

A Ti.

B T.

C Sn.

D Si.

E Tn.

Question #24

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

A 4f

B 2p

C 3s

D 2d

E 1s

Question #25

Which atomic particle determines the chemical behavior of an atom?

A proton

B neutron

C none of these

D nucleus

E electron

Question #26

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

A BaBr2

B Cs2O

C CO2

D NaCl

E CaO

Question #27

The correct formula for sodium sulfide is

A NaS2

B Na2S

C SSu

D Na3S

E NaS

Question #28

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

A lower

B excited

C frenetic

D stable

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 No25

D N2O5

Question #31

The binary compound PCl3 is called

A phosphorus trichloride

B phosphorus chloride

C monophosphorus trichloride

D none of these

E triphosphorus chloride

Question #32

The charge on a barium ion in its ionic compound is

A Various charges are possible.

B -1

C +3

D +2

E +1

Question #33

The correct name for LiCl is

A monolithium chloride

B lithium(I) chloride

C monolithium monochloride

D lithium chloride

E lithium monochloride

Question #34

The number of protons in 200 80 Hg is

A 200

B dependent on ionic charge

C 120

D 80

E unknown

Question #35

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

A atomic number

B valence

C none of these

D mass number

E isotope number

Question #36

Which of the following has the electron configuration 1s22s22p63s23p64s23d5?

A none of these

B Ca

C Br

D Cr

E Mn

Question #37

Which of the following is a nonmetal?

A cesium

B carbon

C cerium

D copper

E calcium

Question #38

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

A 2

B 3

C 6

D 8

E 1

Question #39

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

A three

B no

C four

D two

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 6

C 2

D none of these

E 14

Question #42

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

A FALSE

B TRUE

Question #43

The symbol Fe stands for the element

A fermium

B tin

C iron

D francium

E fluorine

Question #44

The number of protons in a given nucleus determines the

A number of protons.

B atomic number.

C number of electrons.

D mass number.

E number of isotopes.

Question #45

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

A 4

B none of these

C 3

D 5

E 2

Question #46

The electron configuration for the sulfur atom is

A none of these

B 1s22s22p63s23p4

C 1s22s22p63s23p5

D 1s22s22p63s5

E 1s22s22p63s23p2

Question #47

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

A 1

B 5

C 7

D 9

E 3

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 none of these

B 0.189 g/mL

C 2.76 × 104 g/mL

D 53.0 g/mL

E 5.30 g/mL

Question #49

The maximum electron capacity of an f sublevel is

A 10

B 6

C 2

D 14

E 18

Question #50

The name for Li2O is ______________.

A Lithium oxide

B Lithium ion

C Lithium 2 oxide

D Lithium dioxide

Question #51

Which of the following is a noble gas?

A CO2

B O2

C N2

D H2

E Ar

Question #52

The name for SrCl2 is

A strontium chloride

B strontium(I) chloride(II)

C strontium dichloride

D strontium(I) chloride

E strontium(II) chloride

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