Question 1

Which element has the chemical symbol,Sn?

Accepted Answer

A)  samarium 
B)  lead 
C)  tin 
D)  tungsten 
E)  selenium 
A)  samarium 
B)  lead 
C)  tin 
D)  tungsten 
E)  selenium

Question 2

What species is represented by the following information? p+ = 47 n° = 62 e- = 46

Accepted Answer

A)  Ag+ 
B)  Nd 
C)  Pd 
D)  Ag 
E)  Pd+ 
A)  Ag+ 
B)  Nd 
C)  Pd 
D)  Ag 
E)  Pd+

Question 3

Predict the charge that an ion formed from nitrogen would have.

Accepted Answer

A)  1- 
B)  6+ 
C)  3- 
D)  3+ 
E)  2- 
A)  1- 
B)  6+ 
C)  3- 
D)  3+ 
E)  2-

Question 4

In a chemical reaction,matter is neither created nor destroyed.Which law does this refer to?

Accepted Answer

A)  Law of Definite Proportions 
B)  Law of the Conservation of Mass 
C)  Law of Modern Atomic Theory 
D)  Law of Multiple Proportions 
E)  First Law of Thermodynamics 
A)  Law of Definite Proportions 
B)  Law of the Conservation of Mass 
C)  Law of Modern Atomic Theory 
D)  Law of Multiple Proportions 
E)  First Law of Thermodynamics

Question 5

Which of the following is an example of the law of multiple proportions?

Accepted Answer

A)  A sample of chlorine is found to contain three times as much Cl-35 as Cl-37. 
B)  Two different compounds formed from carbon and oxygen have the following mass ratios: 1.33 g O: 1 g C and 2.66 g O: 1 g C. 
C)  Two different samples of table salt are found to have the same ratio of sodium to chlorine. 
D)  The atomic mass of bromine is found to be 79.90 amu. 
E)  Nitrogen dioxide always has a mass ratio of 2.28 g O: 1 g N. 
A)  A sample of chlorine is found to contain three times as much Cl-35 as Cl-37. 
B)  Two different compounds formed from carbon and oxygen have the following mass ratios: 1.33 g O: 1 g C and 2.66 g O: 1 g C. 
C)  Two different samples of table salt are found to have the same ratio of sodium to chlorine. 
D)  The atomic mass of bromine is found to be 79.90 amu. 
E)  Nitrogen dioxide always has a mass ratio of 2.28 g O: 1 g N.

Question 6

How many Li atoms are contained in 97.9 g of Li?

Accepted Answer

A)  5.90 × 1025 Li atoms 
B)  7.09 × 1021 Li atoms 
C)  8.49 × 1024 Li atoms 
D)  4.27 × 1022 Li atoms 
E)  4.18 × 1024 Li atoms 
A)  5.90 × 1025 Li atoms 
B)  7.09 × 1021 Li atoms 
C)  8.49 × 1024 Li atoms 
D)  4.27 × 1022 Li atoms 
E)  4.18 × 1024 Li atoms

Question 7

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

Accepted Answer

A)  A and D 
B)  A and C 
C)  B and D 
D)  C and D 
E)  all of the above 
A)  A and D 
B)  A and C 
C)  B and D 
D)  C and D 
E)  all of the above

Question 8

Why do elements in the same group tend to have similar chemical properties?

Accepted Answer

Since elements in th

Question 9

Why doesn't a mass spectrum of silver have a peak at 107.9 amu?

Accepted Answer

The average atomic mass of sil

Question 10

What does "X" represent in the following symbol?   X

Accepted Answer

A)  dysprosium 
B)  nickel 
C)  terbium 
D)  silicon 
E)  copper 
A)  dysprosium 
B)  nickel 
C)  terbium 
D)  silicon 
E)  copper

Question 11

Predict the charge that the ion formed from chlorine would have.

Accepted Answer

A)  1- 
B)  2+ 
C)  1+ 
D)  4- 
E)  3- 
A)  1- 
B)  2+ 
C)  1+ 
D)  4- 
E)  3-

Question 12

Which of the following elements is an alkaline earth metal?

Accepted Answer

A)  La 
B)  P 
C)  I 
D)  Rb 
E)  Ba 
A)  La 
B)  P 
C)  I 
D)  Rb 
E)  Ba

Question 13

Identify the element that has an atomic number of 40.

Accepted Answer

A)  neon 
B)  calcium 
C)  zirconium 
D)  bromine 
E)  gold 
A)  neon 
B)  calcium 
C)  zirconium 
D)  bromine 
E)  gold

Question 14

Which of the following is equal to exactly Avogadro's number of atoms?

Accepted Answer

A)  8.00 grams of oxygen 
B)  35.38 grams of zinc 
C)  12.01 grams of carbon 
D)  11.99 grams of sodium 
E)  34.00 grams of selenium 
A)  8.00 grams of oxygen 
B)  35.38 grams of zinc 
C)  12.01 grams of carbon 
D)  11.99 grams of sodium 
E)  34.00 grams of selenium

Question 15

Identify the discovery that Millikan made.

Accepted Answer

A)  the mass of a proton 
B)  the charge of a proton 
C)  the charge of a single electron 
D)  the mass of a beta particle 
E)  molecules 
A)  the mass of a proton 
B)  the charge of a proton 
C)  the charge of a single electron 
D)  the mass of a beta particle 
E)  molecules

Question 16

Are anions typically larger or smaller than their corresponding atom? Why?

Accepted Answer

Anions are larger than their correspondi

Question 17

How many moles of Kr are contained in 398 mg of Kr?

Accepted Answer

A)  4.75 × 10-3 moles Kr 
B)  33.4 moles Kr 
C)  2.11 × 10-4 moles Kr 
D)  2.99 × 10-3 moles Kr 
E)  1.19 × 10-4 moles Kr 
A)  4.75 × 10-3 moles Kr 
B)  33.4 moles Kr 
C)  2.11 × 10-4 moles Kr 
D)  2.99 × 10-3 moles Kr 
E)  1.19 × 10-4 moles Kr

Question 18

Predict the charge that an ion formed from tellerium would have.

Accepted Answer

A)  1- 
B)  6- 
C)  3- 
D)  4- 
E)  2- 
A)  1- 
B)  6- 
C)  3- 
D)  4- 
E)  2-

Question 19

How many iron atoms are contained in 354 g of iron?

Accepted Answer

A)  2.62 × 1025 Fe atoms 
B)  2.13 × 1026 Fe atoms 
C)  4.69 × 1024 Fe atoms 
D)  3.82 × 1024 Fe atoms 
E)  9.50 × 1022 Fe atoms 
A)  2.62 × 1025 Fe atoms 
B)  2.13 × 1026 Fe atoms 
C)  4.69 × 1024 Fe atoms 
D)  3.82 × 1024 Fe atoms 
E)  9.50 × 1022 Fe atoms

Question 20

How many protons are in nickel?

Accepted Answer

A)  28 
B)  30 
C)  31 
D)  30.7 
E)  58.7 
A)  28 
B)  30 
C)  31 
D)  30.7 
E)  58.7

Exam 2: Atoms and Elements

Which element has the chemical symbol,Sn?

What species is represented by the following information? p+ = 47 n° = 62 e- = 46

Predict the charge that an ion formed from nitrogen would have.

In a chemical reaction,matter is neither created nor destroyed.Which law does this refer to?

Which of the following is an example of the law of multiple proportions?

How many Li atoms are contained in 97.9 g of Li?

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

Why do elements in the same group tend to have similar chemical properties?

Why doesn't a mass spectrum of silver have a peak at 107.9 amu?

What does "X" represent in the following symbol? X

Predict the charge that the ion formed from chlorine would have.

Which of the following elements is an alkaline earth metal?

Identify the element that has an atomic number of 40.

Which of the following is equal to exactly Avogadro's number of atoms?

Identify the discovery that Millikan made.

Are anions typically larger or smaller than their corresponding atom? Why?

How many moles of Kr are contained in 398 mg of Kr?

Predict the charge that an ion formed from tellerium would have.

How many iron atoms are contained in 354 g of iron?

How many protons are in nickel?

Matter, measurement, and Problem Solving

Molecules,compounds,and Chemical Equations

Chemical Quantities and Aqueous Reactions

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes,valence Bond Theory,

Liquids,solids,and Intermolecular Forces

Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

What species is represented by the following information? p⁺ = 47 n° = 62 e^- = 46