Question 1

Which of the following ions is not isoelectronic with the noble gas neon?

Accepted Answer

A) O2- 
B) F- 
C) Al3+ 
D) S2- 
A) O2- 
B) F- 
C) Al3+ 
D) S2-

Question 2

Which one of these compounds is ionic?

Accepted Answer

A) NH4Cl 
B) HI 
C) H2CO3 
D) NH3 
A) NH4Cl 
B) HI 
C) H2CO3 
D) NH3

Question 3

Name three ions found in tooth enamel.

Accepted Answer

calcium Ca

Question 4

Write the formula and name for the following compounds that form
A)Iron (II)and oxide
B)Silver (I)and bromide
C)Sodium and sulfide

Accepted Answer

A)FeO, iron(II)oxide

Question 5

One mole of molecular oxygen weighs 16.0 grams.

Accepted Answer

A) True 
 B)False

Question 6

For cations, the charge = ________.

Accepted Answer

The answer of For cations, the charge = ________....

Question 7

The approximate bond angles between the atoms in a molecule with a trigonal planar electron pair geometry are:

Accepted Answer

A) 90° 
B) 120° 
C) 180° 
D) 109.5° 
A) 90° 
B) 120° 
C) 180° 
D) 109.5°

Question 8

Iron pyrite (fool's gold)is iron (II)sulfide. What is its formula?

Accepted Answer

A) FeS 
B) FeSO3 
C) FeSO4 
D) Fe2S3 
A) FeS 
B) FeSO3 
C) FeSO4 
D) Fe2S3

Question 9

Nonmetallic elements normally form covalent bonds with other nonmetallic elements.

Accepted Answer

A) True 
 B)False

Question 10

What is the correct name for a molecule of SO3?

Accepted Answer

A) Sulfur trioxide 
B) Sulfur oxide 
C) Sulfite 
D) Monosulfur trioxide 
A) Sulfur trioxide 
B) Sulfur oxide 
C) Sulfite 
D) Monosulfur trioxide

Question 11

Calculate the masses in grams of the following quantities:
A)2.00 moles of P4
B)125 moles of N2
C)75.0 millimoles of S8

Accepted Answer

A)248 g,
B

Question 12

Which combination contains atoms or ions with complete valence shells?

Accepted Answer

A) Ne, O2-, Ca2+, Fe2+ 
B) F-, Na+, Sn2+, Ar 
C) P3-, Mg2+, He, Sc3+ 
D) Kr, K+, Cu+, Al3+ 
A) Ne, O2-, Ca2+, Fe2+ 
B) F-, Na+, Sn2+, Ar 
C) P3-, Mg2+, He, Sc3+ 
D) Kr, K+, Cu+, Al3+

Question 13

What is the correct name for Cl2O7?

Accepted Answer

A) Chloric acid 
B) Chlorine oxide 
C) Dichloride oxide 
D) Dichlorine heptoxide 
A) Chloric acid 
B) Chlorine oxide 
C) Dichloride oxide 
D) Dichlorine heptoxide

Question 14

How many electrons can be contained in the first energy level?

Accepted Answer

A) 2 
B) 8 
C) 10 
D) 18 
A) 2 
B) 8 
C) 10 
D) 18

Question 15

An atom ________ electrons when it forms an anion.

Accepted Answer

The answer of An atom ________ electrons when it forms...

Question 16

The reaction of magnesium and nitrogen produces:

Accepted Answer

A) Mg2N3 
B) Mg3N2 
C) MgN 
D) Mg3N 
A) Mg2N3 
B) Mg3N2 
C) MgN 
D) Mg3N

Question 17

An ion containing 19 protons and 18 electrons is a cation.

Accepted Answer

A) True 
 B)False

Question 18

Determine the molecular geometry of the following molecules or ions and decide if they are polar or nonpolar.
A)SO3
B)H2S
C)BeH2
D)PF3
E)ClO2-

Accepted Answer

A)trigonal planar, nonpolar;
B

Question 19

The angle between the bonds in a tetrahedral molecule is 90°.

Accepted Answer

A) True 
 B)False

Question 20

Atoms and ions that have the same number of electrons are described as ________.

Accepted Answer

The answer of Atoms and ions that have the same...

Which of the following ions is not isoelectronic with the noble gas neon?

Which one of these compounds is ionic?

Name three ions found in tooth enamel.

Write the formula and name for the following compounds that form A)Iron (II)and oxide B)Silver (I)and bromide C)Sodium and sulfide

One mole of molecular oxygen weighs 16.0 grams.

For cations, the charge = ________.

The approximate bond angles between the atoms in a molecule with a trigonal planar electron pair geometry are:

Iron pyrite (fool's gold)is iron (II)sulfide. What is its formula?

Nonmetallic elements normally form covalent bonds with other nonmetallic elements.

What is the correct name for a molecule of SO₃?

Calculate the masses in grams of the following quantities: A)2.00 moles of P₄ B)125 moles of N₂ C)75.0 millimoles of S₈

Which combination contains atoms or ions with complete valence shells?

What is the correct name for Cl₂O₇?

How many electrons can be contained in the first energy level?

An atom ________ electrons when it forms an anion.

The reaction of magnesium and nitrogen produces:

An ion containing 19 protons and 18 electrons is a cation.

Determine the molecular geometry of the following molecules or ions and decide if they are polar or nonpolar. A)SO₃ B)H₂S C)BeH₂ D)PF₃ E)ClO₂^-

The angle between the bonds in a tetrahedral molecule is 90°.

Atoms and ions that have the same number of electrons are described as ________.

Chemistry Basics - Matter and Measurement

Atoms and Radioactivity

Introduction to Organic Compounds

Chemical Reactions

Carbohydrates - Lifes Sweet Molecules

Whats the Attraction State Changes, Solubility, and Lipids

Solution Chemistry: How Sweet Is Your Tea

Acids, Bases, and Buffers in the Body

Proteins - Workers of the Cell

Nucleic Acids - Big Molecules With a Big Role

Food As Fuel - A Metabolic Overview

Filters

Exam 3: Compounds - Putting Particles Together

Which of the following ions is not isoelectronic with the noble gas neon?

Which one of these compounds is ionic?

Name three ions found in tooth enamel.

Write the formula and name for the following compounds that form A)Iron (II)and oxide B)Silver (I)and bromide C)Sodium and sulfide

One mole of molecular oxygen weighs 16.0 grams.

For cations, the charge = ________.

The approximate bond angles between the atoms in a molecule with a trigonal planar electron pair geometry are:

Iron pyrite (fool's gold)is iron (II)sulfide. What is its formula?

Nonmetallic elements normally form covalent bonds with other nonmetallic elements.

What is the correct name for a molecule of SO3?

Calculate the masses in grams of the following quantities: A)2.00 moles of P4 B)125 moles of N2 C)75.0 millimoles of S8

Which combination contains atoms or ions with complete valence shells?

What is the correct name for Cl2O7?

How many electrons can be contained in the first energy level?

An atom ________ electrons when it forms an anion.

The reaction of magnesium and nitrogen produces:

An ion containing 19 protons and 18 electrons is a cation.

Determine the molecular geometry of the following molecules or ions and decide if they are polar or nonpolar. A)SO3 B)H2S C)BeH2 D)PF3 E)ClO2-

The angle between the bonds in a tetrahedral molecule is 90°.

Atoms and ions that have the same number of electrons are described as ________.

Chemistry Basics - Matter and Measurement

Atoms and Radioactivity

Introduction to Organic Compounds

Chemical Reactions

Carbohydrates - Lifes Sweet Molecules

Whats the Attraction State Changes, Solubility, and Lipids

Solution Chemistry: How Sweet Is Your Tea

Acids, Bases, and Buffers in the Body

Proteins - Workers of the Cell

Nucleic Acids - Big Molecules With a Big Role

Food As Fuel - A Metabolic Overview

Filters

What is the correct name for a molecule of SO₃?

Calculate the masses in grams of the following quantities: A)2.00 moles of P₄ B)125 moles of N₂ C)75.0 millimoles of S₈

What is the correct name for Cl₂O₇?

Determine the molecular geometry of the following molecules or ions and decide if they are polar or nonpolar. A)SO₃ B)H₂S C)BeH₂ D)PF₃ E)ClO₂^-