CHM1025C Module One: Sample Exam Homework Answers


Part D1: Chemical/Physical/Nuclear Properties (Section 3.6)  5 points

1. Define: Physical Property: A physical property refers to those characteristics of a pure substance that we can change without changing the composition of the substance.


2. Chemical Property: A chemical property of a pure substance decribes the chemical reactions with other substances.


3. Classify each of the following as a chemical or physical property:


a.      Color  __ Physical Property __


b.      Odor  ___Physical Property ___


c.       Reaction with water:  ___Chemical Property___


d.      Solubility in water:      __ Physical Property ___


e.      Melting point:             ___ Physical Property ____


f.        Boiling point:              ___ Physical Property ____


g.      Sublimation Point:      __ Physical Property ____


h.      Reaction with oxygen  __ Chemical Property ____


i.        Density:       ____ Physical Property __


j.        Solid state:  ____ Physical Property __


k.       Reaction producing a Gas:  __ Chemical Property ____


l.        Conductor of electricity:       ___ Physical Property ____


m.     Water is insoluble in gasoline: _ Physical Property ___


n.      Good conductor of heat:  ___ Physical Property ___


o.      Two chemicals when mixed gives of heat: __ Chemical Property ___


p.      Appearance at Room Temperature:  ___ Physical Property __


q.      An element turns black when heated __ Chemical Property __


r.        Silver tarnishes in Air __ Chemical Property __


s.       An element is radioactive: __Nuclear Property__