Question 1

H2SeO4 is called selenic acid.

Accepted Answer

A) True 
 B)False

Question 2

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

Accepted Answer

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

Question 3

A molecule of water contains hydrogen and oxygen in a 1:8 ratio by mass. This is a statement of

Accepted Answer

A)   the law of conservation of mass
B)   the law of multiple proportions
C)   the law of constant composition
D)   the law of conservation of energy
E)   none of the aboveF) B) and D)
G) B) and C)

Question 4

Which one of the following is the formula of hydrochloric acid?

Accepted Answer

A)   HClO
B)   HCl
C)   HClO3 
D)   HClO4 
E)   HClO2F) A) and E)
G) D) and E)

Question 5

Carbon can exist in different forms called .

Accepted Answer

The answer of Carbon can exist in different forms called...

Question 6

Which atom has the largest number of neutrons?

Accepted Answer

A)   calcium- 40
B)   argon- 40
C)   phosphorous- 30
D)   chlorine- 37
E)   potassium- 39F) B) and E)
G) C) and E)

Question 7

Which metal forms cations of differing charges?

Accepted Answer

A)   Ba
B)   Cs
C)   Sn
D)   K
E)   AlF) B) and C)
G) A) and B)

Question 8

Of the three types of radioactivity characterized by Rutherford, which is/are electrically charged?

Accepted Answer

A)   α- rays, β- rays, and γ- rays
B)   α- rays
C)   α- rays and γ- rays
D)   β- rays
E)   α- rays and β- raysF) C) and D)
G) None of the above

Question 9

Calcium forms an ion with a charge of .

Accepted Answer

A)   0
B)   - 1
C)   - 2
D)   +2
E)   +1F) A) and B)
G) B) and D)

Question 10

The correct name for Mg(ClO3) 2 is _ .

Accepted Answer

A)   magnesium chlorate
B)   manganese perchlorate
C)   magnesium perchlorate
D)   magnesium chloroxide
E)   manganese chlorateF) A) and D)
G) D) and E)

Question 11

Which one of the following is not one of the postulates of Dalton's atomic theory?

Accepted Answer

A)   All atoms of a given element are identical; the atoms of different elements are different and have different properties.
B)   Atoms are composed of protons, neutrons, and electrons.
C)   Each element is composed of extremely small particles called atoms.
D)   Atoms of an element are not changed into different types of atoms by chemical reactions:Atoms are neither created nor destroyed in chemical reactions.
E)   Compounds are formed when atoms of more than one element combine; a given compound always has the same relative number and kind of atoms.F) A) and D)
G) B) and E)

Question 12

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

Accepted Answer

A)   S
B)   Rh
C)   P
D)   F
E)   NF) C) and E)
G) B) and D)

Question 13

Vertical columns of the periodic table are known as .

Accepted Answer

A)   periods
B)   metalloids
C)   groups
D)   metals
E)   nonmetalsF) A) and E)
G) B) and C)

Question 14

Predict the empirical formula of the ionic compound that forms from sodium and fluorine.

Accepted Answer

A)   Na2F
B)   NaF
C)   Na2F3 
D)   NaF2 
E)   Na3F2F) A) and E)
G) A) and D)

Question 15

Which one of the following basic forces is so small that it has no chemical significance?

Accepted Answer

A)   strong nuclear force
B)   gravity
C)   electromagnetism
D)   Coulomb's law
E)   weak nuclear forceF) B) and E)
G) None of the above

Question 16

Of the three types of radioactivity characterized by Rutherford, which are particles?

Accepted Answer

A)   a- rays and y- rays
B)   a- rays and fi- rays
C)   a- rays, fi- rays, and y- rays
D)   fi- rays
E)   y- raysF) A) and B)
G) A) and E)

Question 17

The formula of ammonium carbonate is .

Accepted Answer

A)   N2(CO3) 3
B)   (NH3) 2CO3
C)   NH4CO2
D)   (NH3) 2CO4
E)   (NH4) 2CO3F) A) and E)
G) None of the above

Question 18

Iodine forms an ion with a charge of .

Accepted Answer

A)   +2
B)   - 7
C)   - 1
D)   +1
E)   - 2F) D) and E)
G) C) and D)

Question 19

An element that appears in the lower left corner of the periodic table is .

Accepted Answer

A)   definitely a non- metal
B)   definitely a metal
C)   either a metalloid or a non- metal
D)   definitely a metalloid
E)   either a metal or metalloidF) C) and D)
G) A) and B)

Question 20

The correct name for CCl4 is _ .

Accepted Answer

A)   carbon perchlorate
B)   carbon tetrachloride
C)   carbon tetrachlorate
D)   carbon chloride
E)   carbon chlorateF) D) and E)
G) A) and E)

Exam 2: Atoms, Molecules, and Ions

Calcium forms an ion with a charge of .

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Which one of the following is the formula of hydrochloric acid?

Correct AnswerverifiedShow Answer

Carbon can exist in different forms called .

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Iodine forms an ion with a charge of .

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H2SeO4 is called selenic acid.

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Which one of the following basic forces is so small that it has no chemical significance?

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Of the three types of radioactivity characterized by Rutherford, which are particles?

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The correct name for Mg(ClO3) 2 is _ .

Correct AnswerverifiedShow Answer

Vertical columns of the periodic table are known as .

Correct AnswerverifiedShow Answer

A molecule of water contains hydrogen and oxygen in a 1:8 ratio by mass. This is a statement of

Correct AnswerverifiedShow Answer

Which one of the following is not one of the postulates of Dalton's atomic theory?

Correct AnswerverifiedShow Answer

Predict the empirical formula of the ionic compound that forms from sodium and fluorine.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which metal forms cations of differing charges?

Correct AnswerverifiedShow Answer

The correct name for CCl4 is _ .

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An element that appears in the lower left corner of the periodic table is .

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The formula of ammonium carbonate is .

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Which atom has the largest number of neutrons?

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Of the three types of radioactivity characterized by Rutherford, which is/are electrically charged?

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

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H₂SeO₄is called selenic acid.

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The correct name for Mg(ClO₃) ₂is _ .

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The correct name for CCl₄is _ .

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