EXAM 2 CHM101 (NEW 2025/ 2026
Update) Introduction to General, Organic,
and Biochemistry Questions & Answers
{Grade A} 100% Correct (Verified
Solutions)- GCU
Balancing Chemical Equations - correct answer When balancing, coefficients in front
of the element or compound formula are used; these are whole numbers that adjust
the amounts of the species.
* Note that we cannot balance an equation by changing the subscripts of the
compound.
Combination (synthesis reactions ) - correct answer 2 element or compunds → 1
compund
A + B → AB
Decomposition - correct answer 1 compund → 2 element or compunds
CD → C + D
Single displacement - correct answer 1 elements and 1 compund → 1 element and 1
compunds
A + CD → C + AD
Double displacement - correct answer 2 compunds → 2 compounds
CD + EF → CF + ED
, EXAM 2 CHM101 (NEW 2025/ 2026
Update) Introduction to General, Organic,
and Biochemistry Questions & Answers
{Grade A} 100% Correct (Verified
Solutions)- GCU
Combustion - correct answer a substance reacts with oxygen in a reaction that burns
to produce a flame.
CH₄ (g) + 2O₂ (g) → CO₂ (g) 2H₂O (g)
Molecular Equation - correct answer where all reactants and products are shown as
neutral compounds
Total Ionic Equation - correct answer Writes all of the anions and cations separately
Net Ionic Wquation - correct answer leaves out the spectator ions from total ionic
equation
Molecular Equation ex. - correct answer Zn(s) + CuCl₂(aq) → ZnCl₂(aq) + Cu(s)
Total Ionic Equation ex. - correct answer Zn(s) + Cu²⁺(aq) + 2 Cl⁻(aq) → Zn²⁺(aq) + 2
Cl⁻(aq) + Cu(s)
Net Ionic Equation ex. - correct answer Zn(s) + Cu²⁺(aq) → Zn²⁺(aq) + Cu(s)
Spectator ion ex. - correct answer 2 Cl⁻
Update) Introduction to General, Organic,
and Biochemistry Questions & Answers
{Grade A} 100% Correct (Verified
Solutions)- GCU
Balancing Chemical Equations - correct answer When balancing, coefficients in front
of the element or compound formula are used; these are whole numbers that adjust
the amounts of the species.
* Note that we cannot balance an equation by changing the subscripts of the
compound.
Combination (synthesis reactions ) - correct answer 2 element or compunds → 1
compund
A + B → AB
Decomposition - correct answer 1 compund → 2 element or compunds
CD → C + D
Single displacement - correct answer 1 elements and 1 compund → 1 element and 1
compunds
A + CD → C + AD
Double displacement - correct answer 2 compunds → 2 compounds
CD + EF → CF + ED
, EXAM 2 CHM101 (NEW 2025/ 2026
Update) Introduction to General, Organic,
and Biochemistry Questions & Answers
{Grade A} 100% Correct (Verified
Solutions)- GCU
Combustion - correct answer a substance reacts with oxygen in a reaction that burns
to produce a flame.
CH₄ (g) + 2O₂ (g) → CO₂ (g) 2H₂O (g)
Molecular Equation - correct answer where all reactants and products are shown as
neutral compounds
Total Ionic Equation - correct answer Writes all of the anions and cations separately
Net Ionic Wquation - correct answer leaves out the spectator ions from total ionic
equation
Molecular Equation ex. - correct answer Zn(s) + CuCl₂(aq) → ZnCl₂(aq) + Cu(s)
Total Ionic Equation ex. - correct answer Zn(s) + Cu²⁺(aq) + 2 Cl⁻(aq) → Zn²⁺(aq) + 2
Cl⁻(aq) + Cu(s)
Net Ionic Equation ex. - correct answer Zn(s) + Cu²⁺(aq) → Zn²⁺(aq) + Cu(s)
Spectator ion ex. - correct answer 2 Cl⁻
