Question 1

If shaded and unshaded spheres represent atoms of different elements,as shown in drawing (1),which drawings (2)-(4)represent the law of multiple proportions?

Accepted Answer

A) only drawings (2)and (3) 
B) only drawings (2)and (4) 
C) only drawings (3)and (4) 
D) drawings (2), (3),and (4) 
A) only drawings (2)and (3) 
B) only drawings (2)and (4) 
C) only drawings (3)and (4) 
D) drawings (2), (3),and (4)

Question 2

Which element can form more than one kind of monatomic ion?

Accepted Answer

A) Na 
B) I 
C) Cr 
D) Zn 
A) Na 
B) I 
C) Cr 
D) Zn

Question 3

Which of the following elements has chemical properties similar to oxygen?

Accepted Answer

A) neon 
B) hydrogen 
C) nitrogen 
D) tellerium 
A) neon 
B) hydrogen 
C) nitrogen 
D) tellerium

Question 4

In the following drawings,shaded spheres represent cations and unshaded spheres represent anions.  
-Which drawing represents the ionic compound BaF2?

Accepted Answer

A) drawing (a) 
B) drawing (b) 
C) drawing (c) 
D) drawing (d) 
A) drawing (a) 
B) drawing (b) 
C) drawing (c) 
D) drawing (d)

Question 5

In which of the following sets do all species have the same number of electrons?

Accepted Answer

A) I-,Xe,Cs2+ 
B) C,N3-,O2- 
C) Mg2+,Ca2+,Ba2+ 
D) S,S2-,S2+ 
A) I-,Xe,Cs2+ 
B) C,N3-,O2- 
C) Mg2+,Ca2+,Ba2+ 
D) S,S2-,S2+

Question 6

Which of the following statements does not describe a physical property of chlorine?

Accepted Answer

A) Chlorine combines with sodium to form table salt. 
B) The color of chorine gas is green. 
C) The density of chlorine gas at standard temperature and pressure is 3.17 g/L. 
D) The freezing point of chlorine is -101°C. 
A) Chlorine combines with sodium to form table salt. 
B) The color of chorine gas is green. 
C) The density of chlorine gas at standard temperature and pressure is 3.17 g/L. 
D) The freezing point of chlorine is -101°C.

Question 7

In the following drawings,shaded spheres represent cations and unshaded spheres represent anions.  
-Which drawing represents the ionic compound RbClO4?

Accepted Answer

A) drawing (a) 
B) drawing (b) 
C) drawing (c) 
D) drawing (d) 
A) drawing (a) 
B) drawing (b) 
C) drawing (c) 
D) drawing (d)

Question 8

________ does not combine with any other element.

Accepted Answer

A) Chlorine 
B) Nitrogen 
C) Helium 
D) Krypton 
A) Chlorine 
B) Nitrogen 
C) Helium 
D) Krypton

Question 9

The gas Freon-11,CCl3F,contains

Accepted Answer

A) C4+,Cl-,and F- ions. 
B) C4+,Cl3-,and F- ions. 
C) C4+ and Cl3F4- ions. 
D) CCl3F molecules. 
A) C4+,Cl-,and F- ions. 
B) C4+,Cl3-,and F- ions. 
C) C4+ and Cl3F4- ions. 
D) CCl3F molecules.

Question 10

By analogy with the oxoanions of sulfur,H2TeO3 would be named

Accepted Answer

A) hydrotellurous acid. 
B) pertelluric acid. 
C) telluric acid. 
D) tellurous acid. 
A) hydrotellurous acid. 
B) pertelluric acid. 
C) telluric acid. 
D) tellurous acid.

Question 11

Which group of elements reacts violently with water?

Accepted Answer

A) halogens 
B) noble gases 
C) alkali metals 
D) alkaline earth metals 
A) halogens 
B) noble gases 
C) alkali metals 
D) alkaline earth metals

Question 12

A property that depends on the amount of a substance is an ________ property,whereas a property that is independent on the amount of substance is an ________ property.

Accepted Answer

The answer of A property that depends on the amount...

Question 13

Use the periodic table below to answer the following questions.  
-In which pair are both formulas of binary fluorides of element D correct?

Accepted Answer

A) DF2 and DF3 
B) DF2 and DF6 
C) DF3 and DF5 
D) DF5 and DF6 
A) DF2 and DF3 
B) DF2 and DF6 
C) DF3 and DF5 
D) DF5 and DF6

Question 14

Phosphate ion has the formula ________.

Accepted Answer

The answer of Phosphate ion has the formula ________....

Question 15

Three atoms have the following properties.   Which of the following statements is true?

Accepted Answer

A) Element Y and Z are isotopes of X. 
B) Element Y is an isotope of Z. 
C) Element Y is an ion of X. 
D) Element Z is an ion of Y. 
A) Element Y and Z are isotopes of X. 
B) Element Y is an isotope of Z. 
C) Element Y is an ion of X. 
D) Element Z is an ion of Y.

Question 16

Which of the following is the correct chemical formula for a molecule of iodine?

Accepted Answer

A) I 
B) I- 
C) I+ 
D) I2 
A) I 
B) I- 
C) I+ 
D) I2

Question 17

Which of the following elements is a good conductor of heat and electricity?

Accepted Answer

A) carbon 
B) chlorine 
C) neon 
D) zinc 
A) carbon 
B) chlorine 
C) neon 
D) zinc

Question 18

A banana split is an example of

Accepted Answer

A) a compound. 
B) an element. 
C) a mixture. 
D) an ion. 
A) a compound. 
B) an element. 
C) a mixture. 
D) an ion.

Question 19

An element has two naturally occurring isotopes.One has an abundance of 37.4% and an isotopic mass of 184.953 amu,and the other has an abundance of 62.6% and a mass of 186.956 amu.What is the atomic weight of the element?

Accepted Answer

A) 185.702 amu 
B) 185.954 amu 
C) 186.207 amu 
D) 186.956 amu 
A) 185.702 amu 
B) 185.954 amu 
C) 186.207 amu 
D) 186.956 amu

Question 20

Which of the following represent isotopes? A:   [ ] B:   [ ] C:   [ ] D:   [ ]

Accepted Answer

A) A and B 
B) A and C 
C) A and D 
D) C and D 
A) A and B 
B) A and C 
C) A and D 
D) C and D

Exam 2: Atoms, molecules, and Ions

If shaded and unshaded spheres represent atoms of different elements,as shown in drawing (1),which drawings (2)-(4)represent the law of multiple proportions?

Which element can form more than one kind of monatomic ion?

Which of the following elements has chemical properties similar to oxygen?

In the following drawings,shaded spheres represent cations and unshaded spheres represent anions. -Which drawing represents the ionic compound BaF2?

In which of the following sets do all species have the same number of electrons?

Which of the following statements does not describe a physical property of chlorine?

In the following drawings,shaded spheres represent cations and unshaded spheres represent anions. -Which drawing represents the ionic compound RbClO4?

________ does not combine with any other element.

The gas Freon-11,CCl3F,contains

By analogy with the oxoanions of sulfur,H2TeO3 would be named

Which group of elements reacts violently with water?

A property that depends on the amount of a substance is an ________ property,whereas a property that is independent on the amount of substance is an ________ property.

Use the periodic table below to answer the following questions. -In which pair are both formulas of binary fluorides of element D correct?

Phosphate ion has the formula ________.

Three atoms have the following properties. Which of the following statements is true?

Which of the following is the correct chemical formula for a molecule of iodine?

Which of the following elements is a good conductor of heat and electricity?

A banana split is an example of

An element has two naturally occurring isotopes.One has an abundance of 37.4% and an isotopic mass of 184.953 amu,and the other has an abundance of 62.6% and a mass of 186.956 amu.What is the atomic weight of the element?

Which of the following represent isotopes? A: [ ] B: [ ] C: [ ] D: [ ]

Chemical Tools: Experimentation and Measurement

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Periodicity and the Electronic Structure of Atoms

Ionic Compounds: Periodic Trends and Bonding

Covalent Bonding and Electron-Dot Structures

Covalent Compounds: Bonding Theories and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids, solids, and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Nuclear Chemistry

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

The Main-Group Elements

Connections to Organic and Biological Chemistry

Filters

In the following drawings,shaded spheres represent cations and unshaded spheres represent anions. -Which drawing represents the ionic compound BaF₂?

In the following drawings,shaded spheres represent cations and unshaded spheres represent anions. -Which drawing represents the ionic compound RbClO₄?

The gas Freon-11,CCl₃F,contains

By analogy with the oxoanions of sulfur,H₂TeO₃ would be named

A property that depends on the amount of a substance is an property,whereas a property that is independent on the amount of substance is an property.