Investigation 6 Chemistry

Balancing equations

100

Why is balancing done

What is the law of conservation of mass

200

HCl + NaOH ---> H₂O + NaCl

Already balanced.

300

Balance:

Al₂S₃ (s) + H₂O (l) ---> Al(OH)₃(s)  +  H₂S (g)

 Al₂S₃(s) + 6 H₂O(l) ---> 2 Al(OH)₃(s) + 3 H₂S(g)

400

Balance:

AgNO₃ + Ni  ---> Ni(NO₃)₂ + Ag

2 AgNO₃ + Ni  ---> Ni(NO₃)₂ + 2 Ag

500

Balance

C₆H₁₄ + O₂  --->  CO₂ + H₂O

2 C₆H₁₄ + 19 O₂  --->  12 CO₂ + 14 H₂O

Solubility

100

What is it called when two soluble liquids are mixed and a solid is formed?

What is a precipitate

200

When a substance is soluble, what symbol is written behind the compound in a chemical equation?

What is (aq)

300

Soluble or insoluble?

Nickel Carbonate

insoluble

400

Soluble or insoluble?

Fe(C₂H₃O₂)₂

What is soluble

500

When Aluminum Chloride is placed in water it dissolves, which ions would be present in solution?

What are Al³⁺ and Cl^- 

Types of reactions

100

What type of reaction is being represented below?

H₃PO₄  + KOH ---> H₂O  + K₃PO₄

What is double replacement reaction

200

What type of reaction is represented below?

Ca + O₂ ---> CaO

What is combination or synthesis?

300

What type of reaction typically produces the products CO₂ and H₂O?

What is a combustion reaction

400

What type of reaction is represented below?

Pb + AgNO₃ ---> Pb(NO₃)₂  + Ag

What is single replacement?

500

What type of reaction is represented below?

2Fe₂O₃ -> 4Fe + 3O₂

What is decomposition?

Misc

100

The type of reaction that releases energy.

What is exothermic?

200

The type of reaction where the products have more energy than the reactants.

What is endothermic?

300

The shell of solvent molecules that surrounds a solute.

What is solvation shell?

400

The type of reaction with a positive ∆H.

What is endothermic?

500

Write the molecular equation from the word equation

potassium sulfate + aluminum chloride -> potassium chloride + aluminum sulfate 

3K₂SO₄ + 2AlCl₃ ---> 6KCl + Al₂(SO₄)₃

Complete/Net ionic

100

Identify the spectator ions

Ba²⁺(aq) + 2I^-(aq) + 2 Na⁺(aq) + SO₄^2-(aq) ---> BaSO₄(s) + 2 I^-(aq) + 2 Na⁺(aq)

I^-, Na⁺

200

Write the complete ionic equation

HI(aq) + KOH(aq) ---> H₂O(l) + KI(aq)

H⁺(aq) + I^-(aq) + K⁺(aq) + OH^-(aq) ---> 

H₂O(l) + K⁺ (aq) +  I^-(aq)

300

Write the net ionic equation for 

H⁺(aq) + I^-(aq) + K⁺(aq) + OH^-(aq) ---> 

H₂O(l) + K⁺ (aq) +  I^-(aq)

H⁺(aq) +  OH^-(aq) ---> H₂O(l) 

400

Write a complete ionic and net ionic equation for:

CaS(aq) + CuCl₂ (aq) ---> CuS(s) + CaCl₂(aq)

Ca²⁺(aq)+ S^2-(aq) + Cu²⁺(aq)+ 2Cl^-(aq) -->

 CuS(s) + Ca²⁺(aq)+2 Cl^-(aq)

 S^2-(aq) + Cu²⁺(aq)->CuS(s)

500

Predict product, balance, write complete ionic, write net ionic.

Ba(C₂H₃O₂)₂(aq) + Na₂CO₃(aq) --->

Ba(C₂H₃O₂)₂ (aq) + Na₂CO₃(aq) --->BaCO₃(s) + 2 NaC₂H₃O₂(aq) 

Ba⁺²(aq) +2 C₂H₃O₂^-(aq) +2 Na⁺(aq) + CO₃^2-(aq)--> BaCO₃(s) + 2Na⁺(aq) + 2C₂H₃O₂^-(aq)

Ba⁺²(aq) + CO₃^2-(aq)--> BaCO₃(s)