Question 1

Isotopes have the same number of ________ but different numbers of ________ in their nuclei.

Accepted Answer

The answer of Isotopes have the same number of ________...

Question 2

Atoms of the same element always have the same number of ________ in their nuclei.

Accepted Answer

The answer of Atoms of the same element always have...

Question 3

The bonding in NaI is ________,whereas the bonding in NH3 is ________.

Accepted Answer

Question 4

The existence of neutrons in the nucleus of an atom was demonstrated by

Accepted Answer

A) Millikan's oil drop experiment. 
B) Rutherford's gold foil experiment. 
C) Thomson's cathode ray tube experiment. 
D) None of these 
A) Millikan's oil drop experiment. 
B) Rutherford's gold foil experiment. 
C) Thomson's cathode ray tube experiment. 
D) None of these

Question 5

The chemical formula for magnesium nitride is

Accepted Answer

A) Mg(NO3)2. 
B) Mg(NO2)2. 
C) Mg3N2. 
D) MgN2. 
A) Mg(NO3)2. 
B) Mg(NO2)2. 
C) Mg3N2. 
D) MgN2.

Question 6

The chemical formula for the nitrite ion is

Accepted Answer

A) N2-. 
B) N 3-. 
C) NO2-. 
D) NO3-. 
A) N2-. 
B) N 3-. 
C) NO2-. 
D) NO3-.

Question 7

What group of elements does the shaded area in the following periodic table indicate?

Accepted Answer

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

Question 8

The number of moles of Li in 34.7 g Li is ________.

Accepted Answer

The answer of The number of moles of Li in...

Question 9

The number of atoms in 1 g of H is ________ (greater than,less than,the same as)the number of atoms in 12 g of C.

Accepted Answer

The answer of The number of atoms in 1 g...

Question 10

Assume that the mixture of substances in drawing (1)undergoes a chemical reaction.Which of the drawings (2)-(4)represents a product mixture that is consistent with the law of mass conservation?

Accepted Answer

A) drawing (2) 
B) drawing (3) 
C) drawing (4) 
A) drawing (2) 
B) drawing (3) 
C) drawing (4)

Question 11

Which element indicated by letter in the following periodic table reacts rapidly with water to form an alkaline solution?

Accepted Answer

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

Question 12

Which is not true?

Accepted Answer

A) Mendeleev ended each row in his periodic table with an inert gas. 
B) Mendeleev left gaps in his periodic table for undiscovered elements. 
C) Mendeleev ordered the elements in his periodic table by atomic weight. 
D) Mendeleev's periodic table predated the concept of electron configuration. 
A) Mendeleev ended each row in his periodic table with an inert gas. 
B) Mendeleev left gaps in his periodic table for undiscovered elements. 
C) Mendeleev ordered the elements in his periodic table by atomic weight. 
D) Mendeleev's periodic table predated the concept of electron configuration.

Question 13

Identify the chemical symbol of element Q in   Q.

Accepted Answer

A) As 
B) Mo 
C) Os 
D) Se 
A) As 
B) Mo 
C) Os 
D) Se

Question 14

Which of the following elements is a liquid at room temperature?

Accepted Answer

A) neon 
B) helium 
C) mercury 
D) lithium 
A) neon 
B) helium 
C) mercury 
D) lithium

Question 15

How many electrons are in the ion,Fe2+?

Accepted Answer

A) 24 
B) 26 
C) 28 
D) 56 
A) 24 
B) 26 
C) 28 
D) 56

Question 16

The chemical formula for rubidium peroxide is

Accepted Answer

A) RbOH. 
B) RbO2. 
C) Rb2O. 
D) Rb2O2. 
A) RbOH. 
B) RbO2. 
C) Rb2O. 
D) Rb2O2.

Question 17

The chemical formula for calcium telluride is

Accepted Answer

A) Ca(TeO3). 
B) Ca(TeO2). 
C) CaTe. 
D) CaTe2. 
A) Ca(TeO3). 
B) Ca(TeO2). 
C) CaTe. 
D) CaTe2.

Question 18

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

Question 19

What is the chemical symbol for manganese?

Accepted Answer

A) Hg 
B) Mg 
C) Mn 
D) Na 
A) Hg 
B) Mg 
C) Mn 
D) Na

Question 20

The compound,Sn(IO3)2,is named

Accepted Answer

A) tin iodate(II). 
B) tin(I)iodate. 
C) tin(I)iodate(II). 
D) tin(II)iodate. 
A) tin iodate(II). 
B) tin(I)iodate. 
C) tin(I)iodate(II). 
D) tin(II)iodate.

Exam 2: Atoms, molecules, and Ions

Isotopes have the same number of ________ but different numbers of ________ in their nuclei.

Atoms of the same element always have the same number of ________ in their nuclei.

The bonding in NaI is ________,whereas the bonding in NH3 is ________.

The existence of neutrons in the nucleus of an atom was demonstrated by

The chemical formula for magnesium nitride is

The chemical formula for the nitrite ion is

What group of elements does the shaded area in the following periodic table indicate?

The number of moles of Li in 34.7 g Li is ________.

The number of atoms in 1 g of H is ________ (greater than,less than,the same as)the number of atoms in 12 g of C.

Assume that the mixture of substances in drawing (1)undergoes a chemical reaction.Which of the drawings (2)-(4)represents a product mixture that is consistent with the law of mass conservation?

Which element indicated by letter in the following periodic table reacts rapidly with water to form an alkaline solution?

Which is not true?

Identify the chemical symbol of element Q in Q.

Which of the following elements is a liquid at room temperature?

How many electrons are in the ion,Fe2+?

The chemical formula for rubidium peroxide is

The chemical formula for calcium telluride is

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

What is the chemical symbol for manganese?

The compound,Sn(IO3)2,is named

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

Isotopes have the same number of but different numbers of in their nuclei.

The bonding in NaI is ,whereas the bonding in NH₃ is .

How many electrons are in the ion,Fe²⁺?

The compound,Sn(IO₃)₂,is named