Question 1

A magnesium ion, Mg2+, has

Accepted Answer

A)  12 protons and 13 electrons.
B)  24 protons and 26 electrons.
C)  12 protons and 10 electrons.
D)  24 protons and 22 electrons.
E)  12 protons and 14 electrons.F) C) and D)
G) A) and E)

Question 2

The elements in a column of the periodic table are known as

Accepted Answer

A)  metalloids.
B)  a period.
C)  noble gases.
D)  a group.
E)  nonmetals.F) A) and B)
G) None of the above

Question 3

The formula for sodium sulfide is

Accepted Answer

A)  NaS.
B)  K2S.
C)  NaS2.
D)  Na2S.
E)  SeS.F) None of the above
G) A) and B)

Question 4

The mineral orpiment, having the empirical formula As2S3, was used in ancient times as a cosmetic. What mass of arsenic is present in 5.0 g of orpiment? [Given: naturally occurring arsenic is all arsenic-75; assume that all naturally occurring sulfur is sulfur-32 (only approximately true) ]

Accepted Answer

A)  0.61 g
B)  3.0 g
C)  1.5 g
D)  2.0 g
E)  3.5 gF) B) and E)
G) B) and D)

Question 5

An iron(II) ion has:

Accepted Answer

A)  24 electrons and a charge of 2+
B)  24 electrons and a charge of 2-
C)  26 electrons and a charge of 2+
D)  28 electrons and a charge of 2+
E)  28 electrons and a charge of 2-F) B) and E)
G) All of the above

Question 6

How many atoms are in one molecule of C6H12O6?

Accepted Answer

Question 7

Name the following binary compound: MnCl2.

Accepted Answer

manganese(...

Question 8

The correct name for NH4NO3 is

Accepted Answer

A)  ammonium nitrate.
B)  ammonium nitrogen trioxide.
C)  ammonia nitrogen oxide.
D)  hydrogen nitrogen oxide.
E)  hydrogen nitrate.F) B) and D)
G) B) and E)

Question 9

Name the straight chain hydrocarbon that contains eight carbon atoms.

Accepted Answer

The answer of Name the straight chain hydrocarbon that contains...

Question 10

Predict the formula for the binary compound formed between potassium and sulfur.

Accepted Answer

The answer of Predict the formula for the binary compound...

Question 11

Give the formula of carbonic acid.

Accepted Answer

The answer of Give the formula of carbonic acid....

Question 12

The chemical formula for iron(II) nitrate is:

Accepted Answer

A)  Fe2(NO3) 3
B)  Ir(NO2) 2
C)  Fe2N3
D)  Fe(NO3) 2
E)  Fe(NO2) 2F) None of the above
G) A) and B)

Question 13

Name the following compound: Cl2O7.

Accepted Answer

dichlorine...

Question 14

Give the formula of iron(II)phosphate.

Accepted Answer

The answer of Give the formula of iron(II)phosphate....

Question 15

Predict the formula for the binary compound formed between barium and phosphorus.

Accepted Answer

A)  BaP
B)  Ba2P
C)  BaP2
D)  Ba2P3
E)  Ba3P2F) A) and B)
G) A) and C)

Question 16

The atomic number is equal to the number of protons in the nucleus of each atom of an element.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following elements is chemically similar to potassium?

Accepted Answer

A)  calcium
B)  arsenic
C)  phosphorus
D)  cerium
E)  cesiumF) A) and C)
G) B) and E)

Question 18

In the early 1900s, Ernest Rutherford performed an experiment with gold foil targets and alpha particles to probe the structure of the atoms. He observed that most of these alpha particles penetrated the foil undeflected. Realizing that atoms are electrically neutral (that is, they have equal numbers of protons and electrons)and that the mass of a proton is significantly greater than the mass of an electron, use Rutherford's data to propose a structural model of an atom.

Accepted Answer

(Answers will vary.)Atoms are ...

Question 19

Name the following compound: NaNO2.

Accepted Answer

Question 20

Give the formula of nitric acid.

Accepted Answer

The answer of Give the formula of nitric acid....

Exam 2: Atoms, Molecules, and Ions

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(Answers will vary.)Atoms are ...
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Give the formula of iron(II)phosphate.

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An iron(II) ion has:

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Give the formula of carbonic acid.

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A magnesium ion, Mg²⁺, has

Correct Answer
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The correct name for NH₄NO₃ is

Correct Answer
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The chemical formula for iron(II) nitrate is:

Correct Answer
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Name the following compound: NaNO₂.

Correct Answer
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Give the formula of nitric acid.

Correct Answer
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How many atoms are in one molecule of C₆H₁₂O₆?

Correct Answer
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The mineral orpiment, having the empirical formula As₂S₃, was used in ancient times as a cosmetic. What mass of arsenic is present in 5.0 g of orpiment? [Given: naturally occurring arsenic is all arsenic-75; assume that all naturally occurring sulfur is sulfur-32 (only approximately true) ]

Correct Answer
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Name the following binary compound: MnCl₂.

Correct Answer
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manganese(...
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Name the following compound: Cl₂O₇.

Correct Answer
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dichlorine...
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The formula for sodium sulfide is

Correct Answer
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Which of the following elements is chemically similar to potassium?

Correct Answer
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The atomic number is equal to the number of protons in the nucleus of each atom of an element.

Correct Answer
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Predict the formula for the binary compound formed between potassium and sulfur.

Correct Answer
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Name the straight chain hydrocarbon that contains eight carbon atoms.

Correct Answer
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Predict the formula for the binary compound formed between barium and phosphorus.

Correct Answer
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The elements in a column of the periodic table are known as

Correct Answer
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Exam 2: Atoms, Molecules, and Ions

Correct Answerverified(Answers will vary.)Atoms are ...View AnswerShow Answer

Give the formula of iron(II)phosphate.

Correct AnswerverifiedShow Answer

An iron(II) ion has:

Correct AnswerverifiedShow Answer

Give the formula of carbonic acid.

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A magnesium ion, Mg2+, has

Correct AnswerverifiedShow Answer

The correct name for NH4NO3 is

Correct AnswerverifiedShow Answer

The chemical formula for iron(II) nitrate is:

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Name the following compound: NaNO2.

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Give the formula of nitric acid.

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How many atoms are in one molecule of C6H12O6?

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The mineral orpiment, having the empirical formula As2S3, was used in ancient times as a cosmetic. What mass of arsenic is present in 5.0 g of orpiment? [Given: naturally occurring arsenic is all arsenic-75; assume that all naturally occurring sulfur is sulfur-32 (only approximately true) ]

Correct AnswerverifiedShow Answer

Name the following binary compound: MnCl2.

Correct Answerverifiedmanganese(...View AnswerShow Answer

Name the following compound: Cl2O7.

Correct Answerverifieddichlorine...View AnswerShow Answer

The formula for sodium sulfide is

Correct AnswerverifiedShow Answer

Which of the following elements is chemically similar to potassium?

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The atomic number is equal to the number of protons in the nucleus of each atom of an element.

Correct AnswerverifiedShow Answer

Predict the formula for the binary compound formed between potassium and sulfur.

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Name the straight chain hydrocarbon that contains eight carbon atoms.

Correct AnswerverifiedShow Answer

Predict the formula for the binary compound formed between barium and phosphorus.

Correct AnswerverifiedShow Answer

The elements in a column of the periodic table are known as

Correct AnswerverifiedShow Answer

Correct Answer
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(Answers will vary.)Atoms are ...
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Correct Answer
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Correct Answer
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Correct Answer
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A magnesium ion, Mg²⁺, has

Correct Answer
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The correct name for NH₄NO₃ is

Correct Answer
verified

Correct Answer
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Name the following compound: NaNO₂.

Correct Answer
verified

Correct Answer
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How many atoms are in one molecule of C₆H₁₂O₆?

Correct Answer
verified

The mineral orpiment, having the empirical formula As₂S₃, was used in ancient times as a cosmetic. What mass of arsenic is present in 5.0 g of orpiment? [Given: naturally occurring arsenic is all arsenic-75; assume that all naturally occurring sulfur is sulfur-32 (only approximately true) ]

Correct Answer
verified

Name the following binary compound: MnCl₂.

Correct Answer
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manganese(...
View Answer

Name the following compound: Cl₂O₇.

Correct Answer
verified
dichlorine...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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