WGU D425 INTRODUCTION TO CHEMISTRY OBJECTIVE
ASSESSMENT EXAM \ WGU D452 INTRO TO CHEMISTRY OA EXAM
LATEST 2026/2027 COMPLETE ACCURATE EXAM ACTUAL
QUESTIONS AND CORRECT DETAILED ANSWERS (100% CORRECT
VERIFIED SOLUTIONS) NEWEST UPDATED VERSION |GUARANTEED
PASS A+ ** MOST RECENT**
How are atomic number and electro negativity related?
A- inversely
B- directly
C- no relationship
D- exponentially
Answer- Directly
Which type of reaction breaks a compound into two or more simpler
substances?
A- synthesis
B- decomposition
C- single replacement
D- combination
Answer- Decomposition
,In the following balanced chemical equation two units of iron(III)
hydroxide yield one unit of iron (III) oxide and three units of water
vapor
Answer- 2Fe(OH)3 —-> Fe2O3 + 3H2O(g)
Which type of reaction does this equation represent.
A- decomposition
B- double replacement
C- synthesis
D- combination
Answer- Decomposition
Which period 2 element forms a monoatomic ion with a charge of -3?
A- O
B- N
C- C
D- F
Answer- N
,In the following balanced chemical equation four units of solid iron react
with three units of oxygen gas to yield two units of solid iron (III) oxide.
4Fe(s) + 3O2(g) ——> 2Fe2O3(s)
A- decomposition
B- synthesis
C- single replacement
D- double replacement
Answer- Synthesis
What is the expected charge on monoatomic anions of arsenic?
A- -1
B- +1
C- -2
D- -3
Answer -3
What is the classification of an element with an atomic number of 15
and mass number of 31?
, A- halogen
B- metal
C- metallic
D- nonmetal
Answer- Non metal
What is the name and type of bond for the compound SnCI2?
A- tin chloride(II) ionic
B- tin(II) chloride ionic
C- tin dichloride covalent
D- tin chlorite covalent
Answer- Tin(II) chloride ionic
What is the chemical formula and type of bond for the compound
formed between calcium (Ca) and nitrogen (N)?
A- CaN2 ionic
B- Can covalent
C- Can covalent
D- Ca3N2 ionic
ASSESSMENT EXAM \ WGU D452 INTRO TO CHEMISTRY OA EXAM
LATEST 2026/2027 COMPLETE ACCURATE EXAM ACTUAL
QUESTIONS AND CORRECT DETAILED ANSWERS (100% CORRECT
VERIFIED SOLUTIONS) NEWEST UPDATED VERSION |GUARANTEED
PASS A+ ** MOST RECENT**
How are atomic number and electro negativity related?
A- inversely
B- directly
C- no relationship
D- exponentially
Answer- Directly
Which type of reaction breaks a compound into two or more simpler
substances?
A- synthesis
B- decomposition
C- single replacement
D- combination
Answer- Decomposition
,In the following balanced chemical equation two units of iron(III)
hydroxide yield one unit of iron (III) oxide and three units of water
vapor
Answer- 2Fe(OH)3 —-> Fe2O3 + 3H2O(g)
Which type of reaction does this equation represent.
A- decomposition
B- double replacement
C- synthesis
D- combination
Answer- Decomposition
Which period 2 element forms a monoatomic ion with a charge of -3?
A- O
B- N
C- C
D- F
Answer- N
,In the following balanced chemical equation four units of solid iron react
with three units of oxygen gas to yield two units of solid iron (III) oxide.
4Fe(s) + 3O2(g) ——> 2Fe2O3(s)
A- decomposition
B- synthesis
C- single replacement
D- double replacement
Answer- Synthesis
What is the expected charge on monoatomic anions of arsenic?
A- -1
B- +1
C- -2
D- -3
Answer -3
What is the classification of an element with an atomic number of 15
and mass number of 31?
, A- halogen
B- metal
C- metallic
D- nonmetal
Answer- Non metal
What is the name and type of bond for the compound SnCI2?
A- tin chloride(II) ionic
B- tin(II) chloride ionic
C- tin dichloride covalent
D- tin chlorite covalent
Answer- Tin(II) chloride ionic
What is the chemical formula and type of bond for the compound
formed between calcium (Ca) and nitrogen (N)?
A- CaN2 ionic
B- Can covalent
C- Can covalent
D- Ca3N2 ionic
