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Chemistry - Fall 2024 > Exam 1 Chem Questions > Flashcards

Exam 1 Chem Questions Flashcards

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1
Q

The type of compound that is most likely to contain a covalent bond is ________.

A

one that is composed of only nonmetals

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2
Q

The correct name for NaHCO3 is ________.

A

sodium bicarbonate

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3
Q

The correct name for Ni(CN)2 is ________.

A

nickel (II) cyanide

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4
Q

The tetrafluoroborate ion has a chemical formula of BF4-. What is the formal charge of the boron atom in this ion?

A

-1

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5
Q

Which of the following is the formula for lead (IV) sulfide?

A

PbS2

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6
Q

Determine the name for N2O5.

A

dinitrogen pentoxide

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7
Q

Give the formula for lithium dichromate.

A

Li2Cr2O7

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8
Q

Place the following elements in order of decreasing atomic size.

A

Rb > Sr > In > Xe

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9
Q

What is the charge on the Fe ions in Fe2O3?

A

3+

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10
Q

What is the empirical formula for C16H32O8?

A

C2H4O

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11
Q

Which of the following represents a physical property?

A

Mercury is a silvery liquid at room temperature

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12
Q

A physical change:

A

occurs when water is cooled to ice

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13
Q

Identify the pure substance from the following:

A

carbon dioxide

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14
Q

How many total electrons can be housed in the 3d-orbitals?

A

10

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15
Q

How many valence electrons does calcium have?

A

2

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16
Q

How many core electrons does calcium have?

A

18

17
Q

All atoms of a given element have the same ________.

A

number of protons

18
Q

Which of the following is the proper electron configuration for calcium?

A

1s22s22p63s23p64s2

19
Q

How many electrons does the Ca2+ ion possess?

A

18

20
Q

Which of the following is the proper electron configuration for the Ca2+ ion?

A

1s22s22p63s23p6

21
Q

Which of the following sets have species containing the same number of electrons?

A

Cl-, Ar, Ca2+

22
Q

Identify the compound with covalent bonds

A

CH4

Chemistry - Fall 2024 (4 decks)

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