Question 1

Elements in Group 8A are known as the ________.

Accepted Answer

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

Question 2

The atomic number of an atom of 80Br is ________.

Accepted Answer

A)  115
B)  35
C)  45
D)  73
E)  80

Question 3

A certain mass of carbon reacts with 128 g of oxygen to form carbon monoxide.________ grams of oxygen would react with that same mass of carbon to form carbon dioxide,according to the law of multiple proportions.

Accepted Answer

A)  25.6
B)  64.0
C)  128
D)  1280
E)  256

Question 4

Which pair of elements would you expect to exhibit the greatest similarity in their physical and chemical properties?

Accepted Answer

A)  H, Li
B)  Cs, Ba
C)  Ca, Sr
D)  Ga, Ge
E)  C, O

Question 5

Which statement below correctly describes the responses of alpha,beta,and gamma radiation to an electric field?

Accepted Answer

A)  Both beta and gamma are deflected in the same direction, while alpha shows no response.
B)  Both alpha and gamma are deflected in the same direction, while beta shows no response.
C)  Both alpha and beta are deflected in the same direction, while gamma shows no response.
D)  Alpha and beta are deflected in opposite directions, while gamma shows no response.
E)  Only alpha is deflected, while beta and gamma show no response.

Question 6

Consider the following selected postulates of Dalton's atomic theory: 
(i) Each element is composed of extremely small particles called atoms.
(ii) Atoms are indivisible.
(iii) Atoms of a given element are identical.
(iv) Atoms of different elements are different and have different properties.
Which of the postulates is(are) no longer considered valid?

Accepted Answer

A)  (i) and (ii) 
B)  (ii) only
C)  (ii) and (iii) 
D)  (iii) only
E)  (iii) and (iv)

Question 7

What is the molecular formula for butane?

Accepted Answer

A)  C2H8
B)  C3H6
C)  C3H8
D)  C4H8
E)  C4H10

Question 8

Which one of the following is most likely to gain electrons when forming an ion?

Accepted Answer

A)  Mn
B)  Zn
C)  F
D)  Li
E)  Al

Question 9

The nucleus of an atom contains ________.

Accepted Answer

A)  electrons
B)  protons, neutrons, and electrons
C)  protons and neutrons
D)  protons and electrons
E)  protons

Question 10

H2SeO4 is called selenic acid.

Accepted Answer

A) True 
 B)False

Question 11

What is the molecular formula for 1-propanol?

Accepted Answer

A)  CH4O
B)  C2H6O
C)  C3H8O
D)  C4H10O
E)  C5H12O

Question 12

The correct name for H2CO3 is ________.

Accepted Answer

A)  carbonous acid
B)  hydrocarbonate
C)  carbonic acid
D)  carbohydrate
E)  carbohydric acid

Question 13

Of the following,the subatomic particle with the smallest mass is the ________.

Accepted Answer

A)  proton
B)  neutron
C)  electron
D)  alpha particle
E)  isotope

Question 14

________ are found uncombined,as monatomic species in nature.

Accepted Answer

A)  Noble gases
B)  Chalcogens
C)  Alkali metals
D)  Alkaline earth metals
E)  Halogens

Question 15

The correct name for K2S is ________.

Accepted Answer

A)  potassium sulfate
B)  potassium disulfide
C)  potassium bisulfide
D)  potassium sulfide
E)  dipotassium sulfate

Question 16

Which one of the following is not true concerning cathode rays?

Accepted Answer

A)  They originate from the negative electrode.
B)  They travel in straight lines in the absence of electric or magnetic fields.
C)  They impart a negative charge to metals exposed to them.
D)  They are made up of electrons.
E)  The characteristics of cathode rays depend on the material from which they are emitted.

Question 17

The formula for aluminum hydroxide is ________.

Accepted Answer

A)  AlOH
B)  Al3OH
C)  Al2(OH) 3
D)  Al(OH) 3
E)  Al2O3

Question 18

Magnesium reacts with a certain element to form a compound with the general formula MgX.What would the most likely formula be for the compound formed between potassium and element X?

Accepted Answer

A)  K2X
B)  KX2
C)  K2X3
D)  K2X2
E)  KX

Question 19

The charge on the manganese in the salt MnF3 is ________.

Accepted Answer

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

Question 20

The correct name for Na2O2 is ________.

Accepted Answer

A)  sodium oxide
B)  sodium dioxide
C)  disodium dioxide
D)  sodium peroxide
E)  disodium oxide

Exam 2: Atoms, molecules, and Ions

The correct name for H₂CO₃ is ________.

Correct Answer
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What is the molecular formula for butane?

Correct Answer
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Magnesium reacts with a certain element to form a compound with the general formula MgX.What would the most likely formula be for the compound formed between potassium and element X?

Correct Answer
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The correct name for K₂S is ________.

Correct Answer
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Which pair of elements would you expect to exhibit the greatest similarity in their physical and chemical properties?

Correct Answer
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The correct name for Na₂O₂ is ________.

Correct Answer
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Which one of the following is most likely to gain electrons when forming an ion?

Correct Answer
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Of the following,the subatomic particle with the smallest mass is the ________.

Correct Answer
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________ are found uncombined,as monatomic species in nature.

Correct Answer
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Which one of the following is not true concerning cathode rays?

Correct Answer
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Elements in Group 8A are known as the ________.

Correct Answer
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The atomic number of an atom of ⁸⁰Br is ________.

Correct Answer
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The nucleus of an atom contains ________.

Correct Answer
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What is the molecular formula for 1-propanol?

Correct Answer
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The formula for aluminum hydroxide is ________.

Correct Answer
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The charge on the manganese in the salt MnF₃ is ________.

Correct Answer
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Which statement below correctly describes the responses of alpha,beta,and gamma radiation to an electric field?

Correct Answer
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Correct Answer
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H₂SeO₄ is called selenic acid.

Correct Answer
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A certain mass of carbon reacts with 128 g of oxygen to form carbon monoxide.________ grams of oxygen would react with that same mass of carbon to form carbon dioxide,according to the law of multiple proportions.

Correct Answer
verified

Exam 2: Atoms, molecules, and Ions

The correct name for H2CO3 is ________.

Correct AnswerverifiedShow Answer

What is the molecular formula for butane?

Correct AnswerverifiedShow Answer

Magnesium reacts with a certain element to form a compound with the general formula MgX.What would the most likely formula be for the compound formed between potassium and element X?

Correct AnswerverifiedShow Answer

The correct name for K2S is ________.

Correct AnswerverifiedShow Answer

Which pair of elements would you expect to exhibit the greatest similarity in their physical and chemical properties?

Correct AnswerverifiedShow Answer

The correct name for Na2O2 is ________.

Correct AnswerverifiedShow Answer

Which one of the following is most likely to gain electrons when forming an ion?

Correct AnswerverifiedShow Answer

Of the following,the subatomic particle with the smallest mass is the ________.

Correct AnswerverifiedShow Answer

________ are found uncombined,as monatomic species in nature.

Correct AnswerverifiedShow Answer

Which one of the following is not true concerning cathode rays?

Correct AnswerverifiedShow Answer

Elements in Group 8A are known as the ________.

Correct AnswerverifiedShow Answer

The atomic number of an atom of 80Br is ________.

Correct AnswerverifiedShow Answer

The nucleus of an atom contains ________.

Correct AnswerverifiedShow Answer

What is the molecular formula for 1-propanol?

Correct AnswerverifiedShow Answer

The formula for aluminum hydroxide is ________.

Correct AnswerverifiedShow Answer

The charge on the manganese in the salt MnF3 is ________.

Correct AnswerverifiedShow Answer

Which statement below correctly describes the responses of alpha,beta,and gamma radiation to an electric field?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

H2SeO4 is called selenic acid.

Correct AnswerverifiedShow Answer

A certain mass of carbon reacts with 128 g of oxygen to form carbon monoxide.________ grams of oxygen would react with that same mass of carbon to form carbon dioxide,according to the law of multiple proportions.

Correct AnswerverifiedShow Answer

The correct name for H₂CO₃ is ________.

Correct Answer
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Correct Answer
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Correct Answer
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The correct name for K₂S is ________.

Correct Answer
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Correct Answer
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The correct name for Na₂O₂ is ________.

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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The atomic number of an atom of ⁸⁰Br is ________.

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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The charge on the manganese in the salt MnF₃ is ________.

Correct Answer
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Correct Answer
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Correct Answer
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H₂SeO₄ is called selenic acid.

Correct Answer
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Correct Answer
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