Question 1

The total number of atoms represented by the formula Co3(PO4)2 is

Accepted Answer

A)  13 
B)  11 
C)  8 
D)  17 
E)  6 
A)  13 
B)  11 
C)  8 
D)  17 
E)  6

Question 2

The symbol Cd stands for the element

Accepted Answer

A)  cadmium 
B)  candelium 
C)  calcium 
D)  cesium 
E)  carbon 
A)  cadmium 
B)  candelium 
C)  calcium 
D)  cesium 
E)  carbon

Question 3

Write the name for Ag. ______________

Accepted Answer

The answer of Write the name for Ag. ______________...

Question 4

Determine the number of protons and the number of neutrons in an atom of Rb-85.

Accepted Answer

37 protons

Question 5

The symbol for the element titanium is

Accepted Answer

A)  T 
B)  Tt 
C)  Ti 
D)  Tm 
E)  Tn 
A)  T 
B)  Tt 
C)  Ti 
D)  Tm 
E)  Tn

Question 6

The average mass of a boron atom is 10.81. Assuming you were able to isolate only one boron atom, the chance that you would randomly get one with a mass of 10.81 is

Accepted Answer

A)  0% 
B)  0.81% 
C)  about 11% 
D)  10.81% 
E)  greater than 50% 
A)  0% 
B)  0.81% 
C)  about 11% 
D)  10.81% 
E)  greater than 50%

Question 7

Which statement below is incorrect?

Accepted Answer

A)  Dalton's statement "All atoms of a given element are identical" is no longer accepted because of the existence of isotopes and ions. 
B)  O3 (ozone) is considered a molecule but is not considered an element. 
C)  One mole of aluminum is equal to the number of aluminum atoms in 26.98 g of aluminum. 
D)  Gases behave the most ideally at high temperatures and low pressures. 
E)  At least two of the above statements (a-d) are incorrect. 
A)  Dalton's statement "All atoms of a given element are identical" is no longer accepted because of the existence of isotopes and ions. 
B)  O3 (ozone) is considered a molecule but is not considered an element. 
C)  One mole of aluminum is equal to the number of aluminum atoms in 26.98 g of aluminum. 
D)  Gases behave the most ideally at high temperatures and low pressures. 
E)  At least two of the above statements (a-d) are incorrect.

Question 8

The chemical formula Ga2O3 indicates

Accepted Answer

A)  two atoms of gallium and three atoms of oxygen 
B)  three atoms of gallium and two atoms of oxygen 
C)  six atoms of each element 
D)  five atoms of each element 
E)  none of these 
A)  two atoms of gallium and three atoms of oxygen 
B)  three atoms of gallium and two atoms of oxygen 
C)  six atoms of each element 
D)  five atoms of each element 
E)  none of these

Question 9

A certain isotope X2+ contains 37 electrons and 73 neutrons. What is the mass number for this element?

Accepted Answer

A)  112 
B)  110 
C)  108 
D)  39 
E)  35 
A)  112 
B)  110 
C)  108 
D)  39 
E)  35

Question 10

Which of the following elements is an alkaline earth metal?

Accepted Answer

A)  Ra 
B)  Au 
C)  Gd 
D)  Bi 
E)  Cs 
A)  Ra 
B)  Au 
C)  Gd 
D)  Bi 
E)  Cs

Question 11

How many hydrogen atoms are indicated by the formula (NH4)2C6H8O2?

Accepted Answer

A)  16 
B)  8 
C)  12 
D)  14 
E)  24 
A)  16 
B)  8 
C)  12 
D)  14 
E)  24

Question 12

List the three main subatomic particles.

Accepted Answer

electron,

Question 13

The number of neutrons in   is

Accepted Answer

A)  10 
B)  9 
C)  7 
D)  4 
E)  3 
A)  10 
B)  9 
C)  7 
D)  4 
E)  3

Question 14

How many protons are in the atom   ?

Accepted Answer

A)  12 
B)  6 
C)  18 
D)  5 
E)  none of these 
A)  12 
B)  6 
C)  18 
D)  5 
E)  none of these

Question 15

Write the symbol for calcium. ______________

Accepted Answer

The answer of Write the symbol for calcium. ______________...

Question 16

Write the name for Kr. ______________

Accepted Answer

The answer of Write the name for Kr. ______________...

Question 17

The symbol for the element strontium is

Accepted Answer

A)  S 
B)  St 
C)  Sm 
D)  Str 
E)  Sr 
A)  S 
B)  St 
C)  Sm 
D)  Str 
E)  Sr

Question 18

Which of the following contains the largest number of oxygen atoms?

Accepted Answer

A)  4H2O 
B)  3CO2 
C)  O3 
D)  H2SO4 
E)  Al(NO3)3 
A)  4H2O 
B)  3CO2 
C)  O3 
D)  H2SO4 
E)  Al(NO3)3

Question 19

Determine the number of protons and neutrons in Cu-63.

Accepted Answer

29 protons

Question 20

The number of neutrons in one atom of   is

Accepted Answer

A)  124 
B)  80 
C)  204 
D)  284 
E)  none of these 
A)  124 
B)  80 
C)  204 
D)  284 
E)  none of these

Exam 4: Chemical Foundations: Elements, Atoms, and Ions

The total number of atoms represented by the formula Co3(PO4)2 is

The symbol Cd stands for the element

Write the name for Ag. ______________

Determine the number of protons and the number of neutrons in an atom of Rb-85.

The symbol for the element titanium is

The average mass of a boron atom is 10.81. Assuming you were able to isolate only one boron atom, the chance that you would randomly get one with a mass of 10.81 is

Which statement below is incorrect?

The chemical formula Ga2O3 indicates

A certain isotope X2+ contains 37 electrons and 73 neutrons. What is the mass number for this element?

Which of the following elements is an alkaline earth metal?

How many hydrogen atoms are indicated by the formula (NH4)2C6H8O2?

List the three main subatomic particles.

The number of neutrons in is

How many protons are in the atom ?

Write the symbol for calcium. ______________

Write the name for Kr. ______________

The symbol for the element strontium is

Which of the following contains the largest number of oxygen atoms?

Determine the number of protons and neutrons in Cu-63.

The number of neutrons in one atom of is

Chemistry: an Introduction

Measurements and Calculations

Matter

Nomenclature

Chemical Reactions: an Introduction

Reactions in Aqueous Solutions

Chemical Composition

Chemical Quantities

Energy

Modern Atomic Theory

Chemical Bonding

Gases

Liquids and Solids

Solutions

Acids and Bases

Equilibrium

Oxidation-Reduction Reactions and Electrochemistry

Radioactivity and Nuclear Energy

Organic Chemistry

Biochemistry

Filters

The total number of atoms represented by the formula Co₃(PO₄)₂ is

The chemical formula Ga₂O₃ indicates

A certain isotope X²⁺ contains 37 electrons and 73 neutrons. What is the mass number for this element?

How many hydrogen atoms are indicated by the formula (NH₄)₂C₆H₈O₂?