Classifying Chemical Reactions Post-Lab Honors

Which reactions showed a color change? Select all that apply

• Zn(s) + CuCl₂(aq) → ZnCl₂(aq) + Cu(s)
• Fe₂(SO₄)₃(aq) + KSCN(aq) → Fe(SCN)₃(aq) + K₂SO₄(aq)
• HC(aq)l + NaOH(aq) →NaCl(aq) + H₂O(𝑙)
• CaO(s) + H₂O(𝑙) → Ca(OH)₂(aq)
• (NH₄)₂CO₃(s) →NH₃(g) + CO₂(g) + H₂O(g)

Which reactions caused a burning piece of wood to go out? Select all that apply

• (NH₄)₂CO₃(s) →NH₃(g) + CO₂(g) + H₂O(g)
• CaCO₃(s) + HCl(aq) →CaCl₂(aq) + CO₂(g) + H₂O(𝑙)
• CaO(s) + H₂O(𝑙) → Ca(OH)₂(aq)
• Zn(s) + CuCl₂(aq) → ZnCl₂(aq) + Cu(s)
• Fe₂(SO₄)₃(aq) + KSCN(aq) → Fe(SCN)₃(aq) + K₂SO₄(aq)

Tags

NGSS.HS-PS1-4

Which one of these is the unbalanced equation for the following reaction

Iron(III) Sulfate is reacted with Potassium Thiocyanate

• Fe₂(SO₄)₃(aq) + KSCN(aq) → Fe(SCN)₃(aq) + K₂SO₄(aq)
• CaO(s) + H₂O(𝑙) → Ca(OH)₂(aq)
• Zn(s) + CuCl₂(aq) → ZnCl₂(aq) + Cu(s)
• HC(aq)l + NaOH(aq) →NaCl(aq) + H₂O(𝑙)
• (NH₄)₂CO₃(s) →NH₃(g) + CO₂(g) + H₂O(g)

Which one of these is the unbalanced equation for the following reaction

Magnesium Ribbon is reacted with Hydrochloric Acid

• Mg(s) + HCl(aq) →H₂(g) + MgCl₂(aq)
• CaO(s) + H₂O(𝑙) → Ca(OH)₂(aq)
• Zn(s) + CuCl₂(aq) → ZnCl₂(aq) + Cu(s)
• Fe₂(SO₄)₃(aq) + KSCN(aq) → Fe(SCN)₃(aq) + K₂SO₄(aq)
• HC(aq)l + NaOH(aq) →NaCl(aq) + H₂O(𝑙)

Which one of these is the unbalanced equation for the following reaction

Ammonium Carbonate is heated

• (NH₄)₂CO₃(s) →NH₃(g) + CO₂(g) + H₂O(g)
• CaO(s) + H₂O(𝑙) → Ca(OH)₂(aq)
• Zn(s) + CuCl₂(aq) → ZnCl₂(aq) + Cu(s)
• Fe₂(SO₄)₃(aq) + KSCN(aq) → Fe(SCN)₃(aq) + K₂SO₄(aq)
• HC(aq)l + NaOH(aq) →NaCl(aq) + H₂O(𝑙)

Which one of these is the unbalanced equation for the following reaction

Calcium Carbonate is reacted with Hydrochloric Acid

• CaCO₃(s) + HCl(aq) →CaCl₂(aq) + CO₂(g) + H₂O(𝑙)
• CaO(s) + H₂O(𝑙) → Ca(OH)₂(aq)
• Zn(s) + CuCl₂(aq) → ZnCl₂(aq) + Cu(s)
• Fe₂(SO₄)₃(aq) + KSCN(aq) → Fe(SCN)₃(aq) + K₂SO₄(aq)
• HC(aq)l + NaOH(aq) →NaCl(aq) + H₂O(𝑙)

Which one of these is the unbalanced equation for the following reaction

Zinc is reacted with Copper(II) Chloride

• Zn(s) + CuCl₂(aq) → ZnCl₂(aq) + Cu(s)
• CaO(s) + H₂O(𝑙) → Ca(OH)₂(aq)
• Fe₂(SO₄)₃(aq) + KSCN(aq) → Fe(SCN)₃(aq) + K₂SO₄(aq)
• HC(aq)l + NaOH(aq) →NaCl(aq) + H₂O(𝑙)
• (NH₄)₂CO₃(s) →NH₃(g) + CO₂(g) + H₂O(g)

Which one of these is the unbalanced equation for the following reaction

Calcium oxide is reacted with Water

• CaO(s) + H₂O(𝑙) → Ca(OH)₂(aq)
• Zn(s) + CuCl₂(aq) → ZnCl₂(aq) + Cu(s)
• Fe₂(SO₄)₃(aq) + KSCN(aq) → Fe(SCN)₃(aq) + K₂SO₄(aq)
• HC(aq)l + NaOH(aq) →NaCl(aq) + H₂O(𝑙)
• (NH₄)₂CO₃(s) →NH₃(g) + CO₂(g) + H₂O(g)

Which one of these is the unbalanced equation for the following reaction

Sodium Hydroxide is reacted with Hydrochloric Acid

• HC(aq)l + NaOH(aq) →NaCl(aq) + H₂O(𝑙)
• CaO(s) + H₂O(𝑙) → Ca(OH)₂(aq)
• Zn(s) + CuCl₂(aq) → ZnCl₂(aq) + Cu(s)
• Fe₂(SO₄)₃(aq) + KSCN(aq) → Fe(SCN)₃(aq) + K₂SO₄(aq)
• (NH₄)₂CO₃(s) →NH₃(g) + CO₂(g) + H₂O(g)

When the following reaction is correctly balanced what would be the missing coefficient marked with an 𝐗? 1Fe₂(SO₄)₃ + 𝐗 KSCN → 2Fe(SCN)₃ + 3K₂SO₄

• 6
• 1
• 2
• 3
• 4

Tags

NGSS.HS-PS1-7