Net Ion Equations

Which of the following is NOT a sign that a reaction is taking place?

• A color change
• The reactant gets smaller
• fizzing
• smoke

What are the spectator ions in the reaction of sodium chloride with silver nitrate?

• silver and nitrate
• sodium and chlorine
• sodium and nitrate
• silver and chlorine

What is Solubility? 

• What is dissolved 
• What does the dissolving
• A measure of how much solute can dissolve in solvent 
• a charged ion 

Tags

NGSS.HS-ESS2-5

What is the precipitate formed when you mix silver nitrate with copper chloride?

• copper nitrate
• copper chloride
• silver chloride
• silver nitrate

Tags

NGSS.HS-PS1-2

Which is the correct net ionic equation for the reaction of AgNO₃ and CaCl₂?

• Ca²⁺(aq) +  2Cl^- (aq) → CaCl(s)
• Ag⁺(aq)  +  Cl^- (aq) → AgCl(s)
• Ag +  Cl  →  AgCl
• Ag⁺  +  Ca²⁺   →Ag₂Ca (s)

Which of the following does NOT form a precipitate?

• Pb(NO₃)₂(aq) + 2KI(aq) →
• Sr(NO₃)_{2 (aq)} + K₂SO_4(aq) →
• AgNO₃(aq) + Na₂S(aq) →
•  Pb(NO₃)₂(aq) + AgNO₃(aq) →

Tags

NGSS.HS-PS1-3

In the reaction
2Ca(s) + O₂(g) → 2CaO(s), calcium is...

• Reduced
• Synthesized
• Oxidized
• None of the above

Tags

NGSS.HS-PS1-2

In this equation,
CuCl₂ + NaOH  → Cu(OH)₂ + NaCl
Which product is insoluble?

• copper(II) hydroxide
• sodium chloride
• sodium hydroxide
• copper(II) chloride

What are the spectator ions in this reaction?
CuCl₂(aq) + NaOH(aq) → Cu(OH)₂(s) + NaCl(aq)
 

• Cu²⁺ and OH^1-
• Na²⁺ and Cl^2-
• Na¹⁺ and Cl^1-
• Na¹⁺ and OH^1-

What is oxidation number of P in K₃PO₄?

• +1
• +5
• -2
• 0

Tags

NGSS.HS-PS1-1