Ch.3 - Chemical ReactionsWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: Classify each of the following substances as either ionic or molecular.KCl                                    HClNH3                                   Ca(OH)2CO2                                   PbSMgBr2                                HC   2H3O2

Problem

Classify each of the following substances as either ionic or molecular.

KCl                                    HCl

NH3                                   Ca(OH)2

CO2                                   PbS

MgBr2                                HC   2H3O2

Solution
  • Recall that ionic compounds are usually composed of a nonmetal and a metal. 
  • On the other hand, molecular compounds are composed of exclusively non-metals
  • Using the periodic table below, we can classify each molecule if it is ionic or molecular by categorizing the atoms present in it
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