Question 1

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- 
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-

Question 2

The formula for sodium sulfide is

Accepted Answer

A) NaS. 
B) K2S. 
C) NaS2. 
D) Na2S. 
E) SeS. 
A) NaS. 
B) K2S. 
C) NaS2. 
D) Na2S. 
E) SeS.

Question 3

Name the straight chain hydrocarbon that contains eight carbon atoms.

Accepted Answer

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

Question 4

Which of the following elements is chemically similar to potassium?

Accepted Answer

A) calcium 
B) arsenic 
C) phosphorus 
D) cerium 
E) cesium 
A) calcium 
B) arsenic 
C) phosphorus 
D) cerium 
E) cesium

Question 5

Name the following compound: NaNO2.

Accepted Answer

Question 6

Name the following binary compound: MnCl2.

Accepted Answer

manganese(

Question 7

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. 
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.

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

Question 9

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)2 
A) Fe2(NO3)3 
B) Ir(NO2)2 
C) Fe2N3 
D) Fe(NO3)2 
E) Fe(NO2)2

Question 10

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. 
A) metalloids. 
B) a period. 
C) noble gases. 
D) a group. 
E) nonmetals.

Question 11

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 12

Give the formula of nitric acid.

Accepted Answer

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

Question 13

Name the following compound: Cl2O7.

Accepted Answer

dichlorine

Question 14

How many atoms are in one molecule of C6H12O6?

Accepted Answer

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) Ba3P2 
A) BaP 
B) Ba2P 
C) BaP2 
D) Ba2P3 
E) Ba3P2

Question 16

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 17

Give the formula of iron(II)phosphate.

Accepted Answer

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

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

Give the formula of carbonic acid.

Accepted Answer

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

Question 20

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

Exam 2: Atoms, Molecules, and Ions

An iron(II)ion has:

The formula for sodium sulfide is

Name the straight chain hydrocarbon that contains eight carbon atoms.

Which of the following elements is chemically similar to potassium?

Name the following compound: NaNO2.

Name the following binary compound: MnCl2.

A magnesium ion, Mg2+, has

The correct name for NH4NO3 is

The chemical formula for iron(II)nitrate is:

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

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

Give the formula of nitric acid.

Name the following compound: Cl2O7.

How many atoms are in one molecule of C6H12O6?

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

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

Give the formula of iron(II)phosphate.

Give the formula of carbonic acid.

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)]

Introduction

Stoichiometry

Reactions in Aqueous Solution

Gases

Energy Relationships in Chemical Reactions

The Electronic Structure of Atoms

The Periodic Table

Chemical Bonding I: the Covalent Bond

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Introduction to Organic Chemistry

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Thermodynamics

Redox Reactions and Electrochemistry

The Chemistry of Coordination Compounds

Nuclear Chemistry

Organic Polymerssynthetic and Natural

Filters

Name the following compound: NaNO₂.

Name the following binary compound: MnCl₂.

A magnesium ion, Mg²⁺, has

The correct name for NH₄NO₃ is

Name the following compound: Cl₂O₇.

How many atoms are in one molecule of C₆H₁₂O₆?

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)]