Question 1

What are the elements in the "A" columns of the period table called?

Accepted Answer

A)   representative elements
B)   nonmetal elements
C)   metalloid elements
D)   transition elements A

Question 2

Use the following terms as appropriate to complete the given statement. All terms may not be used. 
mass
volume
density
intensive
extensive
The ______________________ of a substance is an example of a ____________________ property.

Accepted Answer

mass, extensive
volume, extensive
density, intensive

Question 3

Which column of the periodic table is commonly called the halogens?

Accepted Answer

A)   1A
B)   4A
C)   7A
D)   8A C

Question 4

If 1 mol of an element has a mass of 63.54 g, the symbol for this element is

Accepted Answer

A)   Eu.
B)   Zn.
C)   Cu.
D)   Xe.

Question 5

The number of valence electrons of a representative element is related to which of the following?

Accepted Answer

A)   atomic number
B)   atomic weight
C)   group number
D)   period number

Question 6

Which of the following sequences gives the correct order as we move from left to right across a row of the period table?

Accepted Answer

A)   metal, metalloid, nonmetal
B)   metal, nonmetal, metalloid
C)   nonmetal, metal, metalloid
D)   nonmetal, metalloid, metal

Question 7

Which subatomic particle(s) are found in the nucleus?

Accepted Answer

A)   only electrons
B)   only neutrons
C)   only protons
D)   both protons and neutrons

Question 8

Which of the following groups of elements contains only metals?

Accepted Answer

A)   Ag, As, Ba, Ca
B)   Ag, Au, Pb, Rb
C)   As, Ge, Si, Te
D)   B, Al, Ga, In

Question 9

What is the mass number of an atom that is made up of 38 protons, 52 neutrons and 38 electrons?

Accepted Answer

A)   38
B)   52
C)   90
D)   128

Question 10

Which of the following is the Lewis structure for a nitrogen atom?

Accepted Answer

A)   
B)   
C)   
D)

Question 11

How many moles of sulfur are there in a 0.685-g sample of sulfur?

Accepted Answer

A)   0.0214 mol
B)   46.8 mol
C)   22.0 mol
D)   32.1 mol

Question 12

How many valence electrons are there in an oxygen atom?

Accepted Answer

A)   2
B)   4
C)   6
D)   8

Question 13

If the atom ratio of Na to N in a compound is 3:1, the mole ratio of Na to N is 3:1.

Accepted Answer

A) True 
 B)False

Question 14

Complete the following statement using one of the following terms. 
compound
element
mixture
In the manufacture of steel, the percent of manganese is adjusted to determine the brittleness of the product. Steel is an example of a ______________________.

Accepted Answer

The answer of Complete the following statement using one of...

Question 15

Enter the chemical symbol in the blank for the element described given below. Representative element in period 4 whose chemical behavior resembles that of O. Symbol for the element:_____________________

Accepted Answer

The answer of Enter the chemical symbol in the blank...

Question 16

The image shown below represents an atomic view of a compound CsI.  What is the mass of one formula unit?

Accepted Answer

A)   259.8 g
B)   259.8 amu
C)   1.00 g
D)   6.022 × 1023 amu

Question 17

If you need a sample of 2.841 mol of Na2S, how many grams do you need?

Accepted Answer

A)   0.003640 g
B)   2.841 g
C)   78.05 g
D)   221.7 g

Question 18

Which of the following is a chemical substance than can be broken down into another substance?

Accepted Answer

A)   element
B)   homogeneous mixture
C)   heterogeneous mixture
D)   compound

Question 19

Enter the chemical symbol in the blank for the element that has the electron arrangement given below. 
shell 1: 2 electrons shell 2: 8 electrons shell 3: 5 electrons
Symbol for the element:_____________________

Accepted Answer

The answer of Enter the chemical symbol in the blank...

Question 20

How many moles of oxygen would be required to make 4 mol of the following compound? P4O10

Accepted Answer

A)   40 mol O
B)   4 mol O
C)   16 mol O
D)   2.5 mol O

Exam 2: Atoms, Elements, and Compounds

What are the elements in the "A" columns of the period table called?

Use the following terms as appropriate to complete the given statement. All terms may not be used. mass volume density intensive extensive The __ of a substance is an example of a property.

Which column of the periodic table is commonly called the halogens?

If 1 mol of an element has a mass of 63.54 g, the symbol for this element is

The number of valence electrons of a representative element is related to which of the following?

Which of the following sequences gives the correct order as we move from left to right across a row of the period table?

Which subatomic particle(s) are found in the nucleus?

Which of the following groups of elements contains only metals?

What is the mass number of an atom that is made up of 38 protons, 52 neutrons and 38 electrons?

Which of the following is the Lewis structure for a nitrogen atom?

How many moles of sulfur are there in a 0.685-g sample of sulfur?

How many valence electrons are there in an oxygen atom?

If the atom ratio of Na to N in a compound is 3:1, the mole ratio of Na to N is 3:1.

Complete the following statement using one of the following terms. compound element mixture In the manufacture of steel, the percent of manganese is adjusted to determine the brittleness of the product. Steel is an example of a ______________________.

Enter the chemical symbol in the blank for the element described given below. Representative element in period 4 whose chemical behavior resembles that of O. Symbol for the element:_____________________

The image shown below represents an atomic view of a compound CsI. What is the mass of one formula unit?

If you need a sample of 2.841 mol of Na₂S, how many grams do you need?

Which of the following is a chemical substance than can be broken down into another substance?

Enter the chemical symbol in the blank for the element that has the electron arrangement given below. shell 1: 2 electrons shell 2: 8 electrons shell 3: 5 electrons Symbol for the element:_____________________

How many moles of oxygen would be required to make 4 mol of the following compound? P₄O₁₀

Exam 2: Atoms, Elements, and Compounds

What are the elements in the "A" columns of the period table called?

Use the following terms as appropriate to complete the given statement. All terms may not be used. mass volume density intensive extensive The ______________________ of a substance is an example of a ____________________ property.

Which column of the periodic table is commonly called the halogens?

If 1 mol of an element has a mass of 63.54 g, the symbol for this element is

The number of valence electrons of a representative element is related to which of the following?

Which of the following sequences gives the correct order as we move from left to right across a row of the period table?

Which subatomic particle(s) are found in the nucleus?

Which of the following groups of elements contains only metals?

What is the mass number of an atom that is made up of 38 protons, 52 neutrons and 38 electrons?

Which of the following is the Lewis structure for a nitrogen atom?

How many moles of sulfur are there in a 0.685-g sample of sulfur?

How many valence electrons are there in an oxygen atom?

If the atom ratio of Na to N in a compound is 3:1, the mole ratio of Na to N is 3:1.

Complete the following statement using one of the following terms. compound element mixture In the manufacture of steel, the percent of manganese is adjusted to determine the brittleness of the product. Steel is an example of a ______________________.

Enter the chemical symbol in the blank for the element described given below. Representative element in period 4 whose chemical behavior resembles that of O. Symbol for the element:_____________________

The image shown below represents an atomic view of a compound CsI. What is the mass of one formula unit?

If you need a sample of 2.841 mol of Na2S, how many grams do you need?

Which of the following is a chemical substance than can be broken down into another substance?

Enter the chemical symbol in the blank for the element that has the electron arrangement given below. shell 1: 2 electrons shell 2: 8 electrons shell 3: 5 electrons Symbol for the element:_____________________

How many moles of oxygen would be required to make 4 mol of the following compound? P4O10

Use the following terms as appropriate to complete the given statement. All terms may not be used. mass volume density intensive extensive The __ of a substance is an example of a property.

If you need a sample of 2.841 mol of Na₂S, how many grams do you need?

How many moles of oxygen would be required to make 4 mol of the following compound? P₄O₁₀