Tro -Chapter 7 Chemistry

Balancing equations

100

Why is balancing done

What is, to prove 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 an acid/base reaction

200

What type of reaction is represented below?

Ca + O₂ ---> CaO

What is Oxidation reduction and Synthesis (Combination)

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, redox

500

What type of reaction is represented below?

NH₄I(aq) + KOH(aq) ---> KI(aq) + H₂O(l) + NH₃(g)

What is a gas evolution reaction

Predict products

100

Predict products and balance

MgCl₂(aq) + K₃PO₄(aq) --->

3 MgCl₂(aq) + 2 K₃PO₄(aq) ---> 

Mg₃(PO₄)₂(s) + 6 KCl(aq)

200

Predict products and balance

HCl (aq) + Ba(OH)₂(aq) --->

2 HCl (aq) + Ba(OH)₂(aq) --->BaCl₂(aq) + 2 H₂O (l)

300

Predict products for this gas evolution reaction:

HClO₄(aq) + K₂CO₃(aq) --->(page 227 helps)

HClO₄(aq) + K₂CO₃(aq) ---> 

CO₂(g) + H₂O(l) + KClO₄(aq)

400

Predict products for a double replacement reaction(represented as generic letters)

AB + CD --->

AB + CD ---> AD + CB

500

Predict products:

CdBr₂(aq) + CaCl₂(aq) --->

CdBr₂(aq) + CaCl₂(aq) --->CdCl₂(aq) + CaBr₂(aq)

NO REACTION, if all reactants and products are soluble there is no change overall.

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)