Question 1

Define the term molecule.

Accepted Answer

A molecule is an aggregate of ...

Question 2

How many electrons, protons, and neutrons are in a neutral atom of the following isotope of gadolinium?

Accepted Answer

64 electro...

Question 3

An iron(II) ion has:

Accepted Answer

A)  24 electrons and a charge of 2+
B)  24 electrons and a charge of 2-
C)  26 electrons and a charge of 2+
D)  28 electrons and a charge of 2+
E)  28 electrons and a charge of 2-

Question 4

What are the three types of radiation that can be produced by the decay of radioactive substances like uranium?

Accepted Answer

Alpha, bet...

Question 5

How many protons are there in one atom of magnesium?

Accepted Answer

The answer of How many protons are there in one...

Question 6

Using a cathode ray tube, J.J.Thomson determined the magnitude of the electric charge on the electron.

Accepted Answer

A) True 
 B)False

Question 7

When J.J.Thomson discovered the electron, what physical property of the electron did he measure?

Accepted Answer

A)  its charge, e
B)  its charge-to-mass ratio, e/m
C)  its temperature, T
D)  its mass, m
E)  its atomic number, Z

Question 8

Describe the contributions of Marie Curie.

Accepted Answer

(note that answers will vary)Marie Curie...

Question 9

Give the formula of copper(II)bromide.

Accepted Answer

The answer of Give the formula of copper(II)bromide....

Question 10

What are the two different ions present in the compound FeCl3?

Accepted Answer

A)  Fe2+, Cl3-
B)  Fe3+, Cl3-
C)  Fe+,  Cl-
D)  Fe3+, Cl-
E)  Fe+, Cl-

Question 11

Define allotrope.

Accepted Answer

An allotrope is one ...

Question 12

Which of the following are isotopes?

Accepted Answer

A)  (14C and 13
C)  
B)  (14C and 14N) 
C)  (14N and 14N3-) 
D)  (12C and 12CO) 
E)  (14N and 14N2)

Question 13

A magnesium ion, Mg2+, has

Accepted Answer

A)  12 protons and 13 electrons.
B)  24 protons and 26 electrons.
C)  12 protons and 10 electrons.
D)  24 protons and 22 electrons.
E)  12 protons and 14 electrons.

Question 14

What are the seven elements that naturally occur as diatomic molecules?

Accepted Answer

Hydrogen, nitrogen, ...

Question 15

What are the two different ions present in the compound CaS ?

Accepted Answer

A)  Ca+, S-
B)  Ca2-, S2+
C)  Ca-, S+
D)  Ca2+, S2-
E)  Ca, S

Question 16

Give the formula of nitrous acid.

Accepted Answer

The answer of Give the formula of nitrous acid....

Question 17

What is the formula for dinitrogen monoxide?

Accepted Answer

The answer of What is the formula for dinitrogen monoxide?...

Question 18

Name the compound Al2O3

Accepted Answer

A)  Aluminum oxide
B)  Aluminum (II) oxide
C)  Dialuminum trioxide
D)  Aluminum trioxide
E)  Aluminum (I) oxide

Question 19

Give the formula of hydrochloric acid.

Accepted Answer

The answer of Give the formula of hydrochloric acid....

Question 20

Name the following H3PO3

Accepted Answer

Exam 2: Atoms, Molecules, and Ions

What are the two different ions present in the compound CaS ?

Correct AnswerverifiedShow Answer

Name the compound Al2O3

Correct AnswerverifiedShow Answer

Name the following H3PO3

Correct AnswerverifiedShow Answer

When J.J.Thomson discovered the electron, what physical property of the electron did he measure?

Correct AnswerverifiedShow Answer

Give the formula of hydrochloric acid.

Correct AnswerverifiedShow Answer

Give the formula of nitrous acid.

Correct AnswerverifiedShow Answer

How many protons are there in one atom of magnesium?

Correct AnswerverifiedShow Answer

Give the formula of copper(II)bromide.

Correct AnswerverifiedShow Answer

Define the term molecule.

Correct AnswerverifiedA molecule is an aggregate of ...View AnswerShow Answer

What are the three types of radiation that can be produced by the decay of radioactive substances like uranium?

Correct AnswerverifiedAlpha, bet...View AnswerShow Answer

An iron(II) ion has:

Correct AnswerverifiedShow Answer

How many electrons, protons, and neutrons are in a neutral atom of the following isotope of gadolinium?

Correct Answerverified64 electro...View AnswerShow Answer

A magnesium ion, Mg2+, has

Correct AnswerverifiedShow Answer

Using a cathode ray tube, J.J.Thomson determined the magnitude of the electric charge on the electron.

Correct AnswerverifiedShow Answer

What is the formula for dinitrogen monoxide?

Correct AnswerverifiedShow Answer

Define allotrope.

Correct AnswerverifiedAn allotrope is one ...View AnswerShow Answer

What are the seven elements that naturally occur as diatomic molecules?

Correct AnswerverifiedHydrogen, nitrogen, ...View AnswerShow Answer

What are the two different ions present in the compound FeCl3?

Correct AnswerverifiedShow Answer

Which of the following are isotopes?

Correct AnswerverifiedShow Answer

Describe the contributions of Marie Curie.

Correct Answerverified(note that answers will vary)Marie Curie...View AnswerShow Answer

Correct Answer
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Name the compound Al₂O₃

Correct Answer
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Name the following H₃PO₃

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A molecule is an aggregate of ...
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Alpha, bet...
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64 electro...
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A magnesium ion, Mg²⁺, has

Correct Answer
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An allotrope is one ...
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Hydrogen, nitrogen, ...
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What are the two different ions present in the compound FeCl₃?

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Correct Answer
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(note that answers will vary)Marie Curie...
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