Question 1

The 80Br- ion has

Accepted Answer

A)  45 protons,35 neutrons,45 electrons.
B)  35 protons,45 neutrons,34 electrons.
C)  35 protons,45 neutrons,36 electrons.
D)  45 protons,35 neutrons,46 electrons.
E)  35 protons,45 neutrons,46 electrons.F) D) and E)
G) A) and B)

Question 2

Polyatomic molecules contain

Accepted Answer

A)  two different types of atoms.
B)  two of the same types of atoms.
C)  only two atoms of the same or different type.
D)  more than two atoms of the same or different type.E) A) and B)
F) None of the above

Question 3

The elements in Group 7A are known by what name?

Accepted Answer

A)  Transition metals
B)  Halogens
C)  Alkali metals
D)  Alkaline earth metals
E)  Noble gasesF) All of the above
G) D) and E)

Question 4

What is the law that describes different samples of a given compound that always contain the same elements in the same mass ratio?

Accepted Answer

law of def...

Question 5

The empirical formula is the simplest whole number ratio of atoms representing a chemical formula of a molecule.

Accepted Answer

A) True 
 B)False

Question 6

Which group is given the name chalcogens?

Accepted Answer

The answer of Which group is given the name chalcogens?...

Question 7

Tetrasulfur dinitride decomposes explosively when heated.What is its formula?

Accepted Answer

A)  S2N4
B)  S4N2
C)  4SN2
D)  S4N
E)  S2NF) A) and C)
G) B) and D)

Question 8

_____________ have properties that are intermediate between those of metals and nonmetals.

Accepted Answer

The answer of _____________ have properties that are intermediate between...

Question 9

Bromine is the only nonmetal that is a liquid at room temperature.Consider the isotope bromine-81,  .Select the combination which lists the correct atomic number,number of neutrons,and mass number,respectively.

Accepted Answer

A)  35,46,81
B)  35,81,46
C)  81,46,35
D)  46,81,35
E)  35,81,116F) A) and D)
G) C) and D)

Question 10

Ferric oxide is used as a pigment in metal polishing.Which of the following is its formula?

Accepted Answer

A)  FeO
B)  Fe2O
C)  FeO3
D)  Fe2O5
E)  Fe2O3F) C) and D)
G) A) and D)

Question 11

Copper (Cu)is a transition metal.

Accepted Answer

A) True 
 B)False

Question 12

What is the name of PCl3?

Accepted Answer

A)  phosphorus chloride
B)  phosphoric chloride
C)  phosphorus trichlorate
D)  trichlorophosphide
E)  phosphorus trichlorideF) C) and E)
G) C) and D)

Question 13

Which is the correct formula for copper(II) phosphate?

Accepted Answer

A)  Cu2PO4
B)  Cu3(PO4) 2
C)  Cu2PO3
D)  Cu(PO4) 2
E)  Cu(PO3) 2F) A) and C)
G) A) and E)

Question 14

Diiodine pentaoxide is used as an oxidizing agent that converts carbon monoxide to carbon dioxide.What is its chemical formula?

Accepted Answer

A)  I2O5
B)  IO5
C)  2IO5
D)  I5O2
E)  (IO5) 2F) A) and D)
G) All of the above

Question 15

______________ are electrons that are deflected away from negatively charged plates.

Accepted Answer

The answer of ______________ are electrons that are deflected away...

Question 16

Almost all the mass of an atom is concentrated in the nucleus.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following is a type of radioactive radiation that has no charge and is unaffected by external electric or magnetic fields?

Accepted Answer

A)  α rays
B)  β rays
C)  γ rays
D)  δ rays
E)  ε raysF) A) and C)
G) A) and B)

Question 18

What is the name given for the elements in Group 7A in the periodic table?

Accepted Answer

The answer of What is the name given for the...

Question 19

What name is given to the simplest organic compounds which only contain carbons and hydrogens?

Accepted Answer

The answer of What name is given to the simplest...

Question 20

What is the term for the number of protons in the nucleus of each atom of an element? It also indicates the number of electrons in the atom.

Accepted Answer

A)  Isotope number
B)  Mass number
C)  Mass-to-charge ratio
D)  Atomic number
E)  Atomic mass unitsF) D) and E)
G) A) and C)

Exam 2: Atoms Molecules and Ions

What is the law that describes different samples of a given compound that always contain the same elements in the same mass ratio?

Correct Answerverifiedlaw of def...View AnswerShow Answer

The elements in Group 7A are known by what name?

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______________ are electrons that are deflected away from negatively charged plates.

Correct AnswerverifiedShow Answer

Tetrasulfur dinitride decomposes explosively when heated.What is its formula?

Correct AnswerverifiedShow Answer

Copper (Cu)is a transition metal.

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Which is the correct formula for copper(II) phosphate?

Correct AnswerverifiedShow Answer

Polyatomic molecules contain

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Bromine is the only nonmetal that is a liquid at room temperature.Consider the isotope bromine-81, .Select the combination which lists the correct atomic number,number of neutrons,and mass number,respectively.

Correct AnswerverifiedShow Answer

The 80Br- ion has

Correct AnswerverifiedShow Answer

What is the name of PCl3?

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_____________ have properties that are intermediate between those of metals and nonmetals.

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What is the name given for the elements in Group 7A in the periodic table?

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What is the term for the number of protons in the nucleus of each atom of an element? It also indicates the number of electrons in the atom.

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Which of the following is a type of radioactive radiation that has no charge and is unaffected by external electric or magnetic fields?

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Almost all the mass of an atom is concentrated in the nucleus.

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What name is given to the simplest organic compounds which only contain carbons and hydrogens?

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Diiodine pentaoxide is used as an oxidizing agent that converts carbon monoxide to carbon dioxide.What is its chemical formula?

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Ferric oxide is used as a pigment in metal polishing.Which of the following is its formula?

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The empirical formula is the simplest whole number ratio of atoms representing a chemical formula of a molecule.

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Which group is given the name chalcogens?

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law of def...
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The ⁸⁰Br^- ion has

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What is the name of PCl₃?

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