Question 1

A fictional element has two naturally occurring isotopes with the natural abundances shown here:   Which statement is TRUE for this element?

Accepted Answer

A) The atomic mass would be 16. 
B) The atomic mass would be less than 16. 
C) The atomic mass would be 18. 
D) The atomic mass would be more than 18. 
E) The atomic mass would be 17. 
A) The atomic mass would be 16. 
B) The atomic mass would be less than 16. 
C) The atomic mass would be 18. 
D) The atomic mass would be more than 18. 
E) The atomic mass would be 17.

Question 2

Protons and electrons each have a mass of 1 amu.

Accepted Answer

A) True 
 B)False

Question 3

What is the atomic symbol for tin?

Accepted Answer

A) Sn 
B) Ti 
C) Tn 
D) Si 
E) none of the above 
A) Sn 
B) Ti 
C) Tn 
D) Si 
E) none of the above

Question 4

The plum pudding model proposed that negatively charged electrons were held in a sphere of positive charge.

Accepted Answer

A) True 
 B)False

Question 5

Isotopes are:

Accepted Answer

A) atoms of the same element that have different number of neutrons. 
B) atoms of the same element that have different number of protons. 
C) atoms of the same element that have different number of electrons. 
D) atoms of the same element that have the same number of neutrons. 
E) none of the above 
A) atoms of the same element that have different number of neutrons. 
B) atoms of the same element that have different number of protons. 
C) atoms of the same element that have different number of electrons. 
D) atoms of the same element that have the same number of neutrons. 
E) none of the above

Question 6

How many neutrons are present in C-14?

Accepted Answer

A) 14 
B) 12 
C) 6 
D) 8 
E) none of the above 
A) 14 
B) 12 
C) 6 
D) 8 
E) none of the above

Question 7

A fictional element named Nivadium is found to have three naturally occurring isotopes with the natural abundances shown here:   The calculated atomic mass of Nivadium is:

Accepted Answer

A) 7.61 amu 
B) 22.83 amu 
C) 23.18 amu 
D) 69.55 amu 
E) none of the above 
A) 7.61 amu 
B) 22.83 amu 
C) 23.18 amu 
D) 69.55 amu 
E) none of the above

Question 8

How many protons and neutrons are in Cl-37?

Accepted Answer

A) 20 protons,17 neutrons 
B) 17 protons,37 neutrons 
C) 17 protons,20 neutrons 
D) 37 protons,17 neutrons 
E) none of the above 
A) 20 protons,17 neutrons 
B) 17 protons,37 neutrons 
C) 17 protons,20 neutrons 
D) 37 protons,17 neutrons 
E) none of the above

Question 9

Which statement below accurately describes the contributions of Thomson?

Accepted Answer

A) ancient Greek philosopher who proposed that matter was continuous 
B) created the modern periodic table 
C) proposed the modern Atomic Theory 
D) discovered the existence of electrons 
E) none of the above 
A) ancient Greek philosopher who proposed that matter was continuous 
B) created the modern periodic table 
C) proposed the modern Atomic Theory 
D) discovered the existence of electrons 
E) none of the above

Question 10

All carbon atoms have exactly 6 protons.

Accepted Answer

A) True 
 B)False

Question 11

The atom is the fundamental building block of everything we hear,feel,see,and experience.

Accepted Answer

A) True 
 B)False

Question 12

When an atom loses an electron,the resulting particle is called:

Accepted Answer

A) a proton. 
B) an anion. 
C) a cation. 
D) an isotope. 
E) none of the above 
A) a proton. 
B) an anion. 
C) a cation. 
D) an isotope. 
E) none of the above

Question 13

Which of the following is NOT a correct name,symbol combination?

Accepted Answer

A) calcium,Ca 
B) gold,Au 
C) manganese,Mn 
D) chromium,Cr 
E) potassium,P 
A) calcium,Ca 
B) gold,Au 
C) manganese,Mn 
D) chromium,Cr 
E) potassium,P

Question 14

In the modern periodic table,elements are listed in order of increasing atomic number rather than increasing relative mass.

Accepted Answer

A) True 
 B)False

Question 15

What is the charge on an ion that has an atomic number of 24 and contains 22   ?

Accepted Answer

A) 2+ 
B) 2- 
C) 1+ 
D) 1- 
E) none of the above 
A) 2+ 
B) 2- 
C) 1+ 
D) 1- 
E) none of the above

Question 16

Which statement reflects the results of Rutherford's gold foil experiments?

Accepted Answer

A) Almost all of the alpha particles were deflected back in the direction from which they came. 
B) Almost all of the alpha particles sputtered gold atoms off of the surface of the foil. 
C) Almost all of the alpha particles were deflected while passing through the foil. 
D) Almost all of the alpha particles passed directly through the foil. 
E) none of the above 
A) Almost all of the alpha particles were deflected back in the direction from which they came. 
B) Almost all of the alpha particles sputtered gold atoms off of the surface of the foil. 
C) Almost all of the alpha particles were deflected while passing through the foil. 
D) Almost all of the alpha particles passed directly through the foil. 
E) none of the above

Question 17

If two atoms each contain different numbers of protons,the atoms must be from different elements.

Accepted Answer

A) True 
 B)False

Question 18

An atom is the smallest identifiable unit of a compound.

Accepted Answer

A) True 
 B)False

Question 19

The atomic mass of individual atoms of an element may vary.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following is NOT a correct name,symbol combination?

Accepted Answer

A) beryllium,Be 
B) magnesium,Mg 
C) iron,I 
D) manganese,Mn 
E) silicon,Si 
A) beryllium,Be 
B) magnesium,Mg 
C) iron,I 
D) manganese,Mn 
E) silicon,Si

A fictional element has two naturally occurring isotopes with the natural abundances shown here: Which statement is TRUE for this element?

Protons and electrons each have a mass of 1 amu.

What is the atomic symbol for tin?

The plum pudding model proposed that negatively charged electrons were held in a sphere of positive charge.

Isotopes are:

How many neutrons are present in C-14?

A fictional element named Nivadium is found to have three naturally occurring isotopes with the natural abundances shown here: The calculated atomic mass of Nivadium is:

How many protons and neutrons are in Cl-37?

Which statement below accurately describes the contributions of Thomson?

All carbon atoms have exactly 6 protons.

The atom is the fundamental building block of everything we hear,feel,see,and experience.

When an atom loses an electron,the resulting particle is called:

Which of the following is NOT a correct name,symbol combination?

In the modern periodic table,elements are listed in order of increasing atomic number rather than increasing relative mass.

What is the charge on an ion that has an atomic number of 24 and contains 22 ?

Which statement reflects the results of Rutherford's gold foil experiments?

If two atoms each contain different numbers of protons,the atoms must be from different elements.

An atom is the smallest identifiable unit of a compound.

The atomic mass of individual atoms of an element may vary.

Which of the following is NOT a correct name,symbol combination?

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Exam 4: Atoms and Elements

A fictional element has two naturally occurring isotopes with the natural abundances shown here: Which statement is TRUE for this element?

Protons and electrons each have a mass of 1 amu.

What is the atomic symbol for tin?

The plum pudding model proposed that negatively charged electrons were held in a sphere of positive charge.

Isotopes are:

How many neutrons are present in C-14?

A fictional element named Nivadium is found to have three naturally occurring isotopes with the natural abundances shown here: The calculated atomic mass of Nivadium is:

How many protons and neutrons are in Cl-37?

Which statement below accurately describes the contributions of Thomson?

All carbon atoms have exactly 6 protons.

The atom is the fundamental building block of everything we hear,feel,see,and experience.

When an atom loses an electron,the resulting particle is called:

Which of the following is NOT a correct name,symbol combination?

In the modern periodic table,elements are listed in order of increasing atomic number rather than increasing relative mass.

What is the charge on an ion that has an atomic number of 24 and contains 22 ?

Which statement reflects the results of Rutherford's gold foil experiments?

If two atoms each contain different numbers of protons,the atoms must be from different elements.

An atom is the smallest identifiable unit of a compound.

The atomic mass of individual atoms of an element may vary.

Which of the following is NOT a correct name,symbol combination?

The Chemical World

Measurement and Problem Solving

Matter and Energy

Molecules and Compounds

Chemical Composition

Chemical Reactions

Quantities in Chemical Reactions

Electrons in Atoms and the Periodic Table

Chemical Bonding

Gases

Liquids, solids, and Intermolecular Forces

Solutions

Acids and Bases

Chemical Equilibrium

Oxidation and Reduction

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters